Need tracking device...

I have a horrible problem with keeping cirtain objects of mine within my grasp. As such, I was wondering if there was anything I could put together or attain that may help me keep track of these things. I have no knowledge of these things, so forgive me if what ii'm asking for sounds far-fetched. I'm looking for something like a small thing little beacon that could be attached to something like a shoe or book that sends out a some form of radio waves on a constant frequency, that can be picked up by the receiver that essentially lets you know how close you are by the sound it makes, whether it be through beeps or noise level. I believe things like that are out there, but i'm wondering i';f I can do anything on a really really small level, like the size of a watch battery with a piece of adhiesive on the back. Any kind of help, even just to let me no that its not possible or whatever, would be great. Thanks in advance.

Topic by poken1151 11 years ago  |  last reply 11 years ago


Can anyone direct me to a site or simplify the steps in making a micro tracking device?

Its a big ask but i need help on making a very small tracking device. This is just an idea atm but something the width of a pencil, or even smaller than that ?

Question by AllaW1 3 years ago  |  last reply 3 years ago


Hidden camera and listening devices

Could someone please let me know if I’m looking on the wrong spots or if someone knows of a way of building or buying a good device for finding hidden cameras and or listening devices also please.

Question by Jjpseismic 1 day ago  |  last reply 20 hours ago


Can I build a gps tracking device small enough to fit into other electronics?

I just bought a house and I have heard some troublesome things about the nearby neighbors. I was wondering if it would be possible to build and wire in a gps tracking device into my electronics (TVs, Comp, Monitor, ect...). I have looked all over online no one makes one. I would like to wire it in direct from the power source inside the tv or what ever all have 110v-120v direct feed. I am good with wiring soldering ect just dont know much about gps and circuit boards but would be willing to give it a try or pay someone to do it for me. Thanks,      Jonathan

Question by j-rhod24 5 years ago  |  last reply 3 years ago


RFID Tracking?

Someone posted a question asking about RFID tracking and didnt get a good response. I also have not found a simple answer to my question on Google. So I figured I'd re-ask the question in hopes of a better solution. In short, friends and I go disc golfing pretty regularly and losing discs is always stressful (obviously we are not pro's so the occasional disc will go into the wood or tall grass etc). I thought wouldnt it be great to stick a tracking device on these discs to help find them. RFID's being small enough to just stick them on and not sacrifice too much in performance to the disc, i figured that would be the best way to go. Question here: Is there a practical way to track rfid tags? basically just a device capable of telling you when the signal is getting hotter or colder. Thanks, DJ

Topic by madzilla 8 years ago



Gps Tracking Device Extended Battery

First ever post after years of lurking. Searched but couldn't quite get the right answer. I'm trying to extend the battery of my GPS Live tracker. Currently I get 3, sometimes 2 days before the battery gets so low I must recover it. I saw where advertisers are selling 10 day batteries for up to $600. Just too much for me. The first picture is a completed model being sold on the internet. So I ordered the battery, ($58) and the charger ($45). Tomorrow morning I'll go find some connectors that match the charger and that I can use as a connector on the GPS. I'm going to go through the hacked battery case. I'll rig the the wires to match the holes then fill the empty case with hot glue to hold it in place. This is my big question: There are 3 electric tabs on the GPS. I have + and -. Can I just ignore the center tab? I will then run the wires through a hole I'll drill in the Hacked battery case. To a connector-connecting to battery. Any issues? The battery has a Built-in IC chip. I am assuming that is an IC chip on the old battery removed. I appreciate any input. Thank you.

Topic by elrog69 7 years ago  |  last reply 7 years ago


Designing a micro GPS tracking device

Hello all, could anyone give me some insight to how complex the process of designing a very small GPS tracker which could be used to track lets say a person, which can post its co-ords to map software which is custom programmed etc in realtime. Hypothetical scenario: 1) Tracking someone who is on the move outdoors, only has very small pockets to fit the thing in.  2) The device must send co-ords to mapping software on a computer every 10 seconds maybe. 3) Someone can view there position on the map software in instantly to understand their exact position. Also how expensive would the whole process cost to manufacturer roughly? Thanks in advance and sorry for the vagueness in my question

Topic by tullybear 6 years ago  |  last reply 6 years ago


How can I equip my bicycle with a tracking device? Answered

I'm about to start back to school and I want to be able to find my bike when it gets stolen. (I am operating under the assumption that it WILL get stolen.) I'd like to outfit the bike with some sort of tracking device, something that will be somewhat easy to hide and not cost me hundreds of dollars. I am a tech newbie but I have friends that can help me with anything complicated, so be specific if you have an idea and I'll do my best to figure it out. Thanks!

Question by KedaDibandion 9 years ago  |  last reply 6 years ago


How to make small elec. shock device? Answered

I saw the the project of Plasmana but I have problem that from where the battery is to be connected, because I lost track while dismantling the camera. Also I doubt that one or the other component in my circuit is damaged and is not working, I have a multi-meter but I don't know how to check those components, so help me with these problems. Thank you.

Question by Kunal Gehlot 3 years ago  |  last reply 3 years ago


BLE Transmitter+Receiver child locator?

Hi, I'm not sure where to start, my understanding of the components and tech are minimal at best. I know what I want to achieve and I believe it is a possible project. I'm looking for any advice even if it exists outside of my current knowledge. Essentially the idea is similar to this "lost child locator" product-  http://tinyurl.com/pd8goy7 or these t-shirts- http://tinyurl.com/mkm5b8k What I'm struggling with is how to carry out the concept without involving a smart phone. I'm looking for a larger range than 15M, multiple devices to respond to one-another, and for the watch to act as both transmitter and receiver. A simple LED indication is sufficient, no sound or vibration are necessary. I think BLE is the proper signal to work with but I don't want to involve smart phones at all. Compactness is a major plus, but ultimately I would settle for a mint tin or puck sized device. Everything would need to run on a small battery as well. The practical application of this project is for times when you're in a large crowd and you are looking for your group. If you had a watch tuned to your group, you could more easily track each other down if you knew someone was close. 

Topic by minion-chan 3 years ago  |  last reply 3 years ago


making a USB music device

For my next shop project I started looking at music devices. at first I wanted to create electric synth music. but then I thought up simpler things. like: why not have a box that can hook into a computer using a usb port... and then with computer softwear, assign certain sounds to certain buttons on the box. for instance. 1)first I would plug the usb thing into the PC. 2) then, I'd open up a pc program that could assign which music tracks would play when certain buttons are pressed,touched,or connected. 3) last, I'd have fun with the device preferably, all the data would be stored inside the usb drive along with the music samples. any Ideas? this is urgent! only 2 more weeks left in school!

Topic by mexx.admin 11 years ago  |  last reply 11 years ago


Open source tracking solar concentrator is go.

Meant to update on this here a while back. For nearly two years now I've been developing the prototype for a solar energy device makeable from scrap and recycled materials, using very basic tools and skills. It's now working, details available here: http://solarflower.blogspot.com/ Facebook group here. This has been possible largely due to the awesome help and support I received through this site. Currently I'm back in New Zealand, preparing the first free workshop on the device's construction and use, taking place the three weekends after Easter at the Tui community, Golden Bay. Then back to Europe for the summer and tour this thing around. Animated tutorials will be available at www.solarflower.org as soon as I find a spare second to do them and finish the website. My God I'm busy.

Topic by SolarFlower_org 8 years ago  |  last reply 6 years ago


How can i make a DIY cheat, small tracking device?

I want to make a tracking device that could potentially connect to a smartphone. I don't need it to do that many things. I want the device to understand borders, and when my phone leave that device for a certain (custom) distance. My phone should receive some sort of alert . Most likely i am going to make this device a sticker device, so i want it to be flat, or almost flat, and as thin as possible . I want this device to use very little energy, so i battery could last a very , very long time.  Also i don't want the device to be too costly, ( if possible 5-10 dollar for one )   Also, if i would to add gps feature , what module should i use, and would it increase the size by a lot? Thank you in advance.

Question by loyal.xie 4 years ago  |  last reply 9 months ago


Need someone to draw me a cool blueprint for eye tracking device

I need a blueprint for a desk mounted eye tracker, I have some specs I need met ....I need someone who understands this and may have input on how to make the idea better.

Topic by Sherwin1234 2 years ago  |  last reply 2 years ago


would anyone be willing to build a Radio Direction Finding device, for transmitter hunting? Answered

I wanted to know if anyone would be ableto make an instructable on how  to build a device for tracking radio signals, or a amateur radio directional finder (ARDF). my electrical skills are mediocre at best and i do not have the ability to buy a device like the HANDI-Finder, so an instructable will help a lot. the two picture are of the handi-finder device from www.handi-finder.com i dont understand it at all. i hope someone will know what to do with it.

Question by banlui 8 years ago  |  last reply 6 years ago


Cheap Simple Pre-Loaded Sim Card? Answered

So I am looking at making some GPS/GSM trackers which are attached to a vehicle and then used in the case of theft.  They would be powered by the car's electrical and would also have a separate backup battery in case the thieves were smart and disconnected the electronics.  The only problem I have seen in planning is the requirement for a sim card on GSM modules.  I understand that I will be required to pay for service, but I need long range, maybe even international service which can send maybe 20 text messages at most.  A pay as you go would be reasonable too.  I just don't want to pay a monthly fee for a fake phone which just sits on a car doing nothing most of the time and doesn't actually do anything until it is called or texted.  Any car trackers I have found don't offer wireless capabilities and I really think my device would be useful.  

Question by jj.inc 5 years ago  |  last reply 3 years ago


How to make a Three Axis computer inpite device for 3D modeling?

Does anybody know how to, or have they made an input device for 3D modeling that tracks horizontal movement, vertical, and depth?I'm looking to build something similar to this device. Link: www.youtube.com/watch

Topic by jacob5680 9 years ago  |  last reply 9 years ago


hi!Mood is still naked!

hi!Mood is a wi-fi device which generates led patterns and plays music in sync with your mood. It plays the tracks which best fit how you feel directly from stereomood.com, associating to each song the coolest and most appropriate RGB led pattern matching your mood. You can interact with hi!Mood through a mobile app interface so that hi!Mood focuses only on what it can do best: playing music and generating colored light patterns matching your mood! hi!Mood is being developed by A-Pole, a mobile application development studio which is creating innovative mobile apps to know more about the world around you and interact simply with everyday electronic objects. A hi!Mood prototype was hacked together by A-Pole during Hackitaly 2012 (more info). A-Pole is taking care of the electronic core, the design is Desall business! Desall is a crowdsourcing platform that, through design contests, connects companies and private clients with a worldwide community of creative talents. Every designer can sign up for free and participate. If you are a creative or a designer, we ask you to imagine and design the hi!Mood case: it must contain the controller board (maximum length and width of an Arduino Mega2560 PCB are 4 and 2.1 inches respectively), emit led patterns and play music through a speaker. If you manage to combine style with functionality, proposing a uniquely cool product design there is a big prize for you! Check the brief to know more about technical requirements, conditions and submission deadline. Link contest Good luck! May the best designer win. Acknowledgements: A-Pole, Arduino, Desall, Hackitaly, Openpicus, Stereomood.

Topic by Desall 6 years ago


Roomba mapping and quadriplegic assistive device

Hello,I am a high school student in the San Francisco bay area. After attending Maker fair this past weekend and talking to the instructables staff, i am going to take on one of your challenges and developing a roomba mapping platform, and much more. Because i am still a student, i don't have the funding to purchase my own roomba, so this is my application for the scholarship. I have attended many lectures that have been made by the Stanford DARPA team, i would like to take some of their ideas and apply it to the roomba platform. My roomba will be able to map it's surrounding, where it will then process that information, creating an optimum route. I will also utilize complete use of all the sensors that are provided so you can keep track of everything that is going on. Mapping will be one feature, there are plenty more. A nice control system for your roomba will be made so you can access everything you need to know about battery life, run time, dirt picked up, etc....in a nice GUI layout. RSS feed can also be sent to your laptop or cell phone so you know what exactly is happening with your roomba. And because this platform will be used very often to guard my precious projects, i will throw on a wi-fi video camera and control system. This will enable me to control the roomba over the internet to scout around and see what my dog is up to. The video feed will also be told to record one pass around the entire house, if anything abnormal appears (chair knocked over, loud nosies, etc.)I am also a member of this years Palo Alto High School Lemelson-MIT invent team. Our project is to create an assistive device for quadriplegics so that they can control their world using countless lase r activated household items. Our quadriplegics friend Henry Evans said that it would be amazing to be able to control a roomba that drives around and plays with his dog. I will make it my personal goal to create a platform which henry can use to control this roomba using the assistive technology our team is developing. (http://robotics.paly.net/)There are plenty of other things i would like to add on if i have the time. The main goal is to make the roomba map it's surroundings, and be controllable by our friend Henry.I have so many more ideas i would like to add on to this if i have the time, and i ensure you that i am very capable to complete these goals by the required time frame. I'm very excited to take on this project, and i believe that with your help i can really do something amazing here that can be appreciated by the entire robotic community.--Daniel FukubaPalo Alto High School

Topic by dfukuba 11 years ago  |  last reply 11 years ago


Tracking down the speed problems on a laptop.

I've copied the conversation here so we could remove the information from the original instructable's comments.  I figure this would also be of some interest to other forum viewers who may have similar problems, or may be able to chip in. The long and short of it is, 92033 (Ed) has a refurbished laptop that takes literal hours to run a YouTube video on.  I suspect that it's due to a bottleneck with his internet connection.  Here's the conversation thus far: ---------------------------------------------------------------- 92033 (Ed): Thank you kindly for your prompt reply...appreciate it very much. I came across this site by accident in searching for something else and now I'm 'hooked' on it. :) So far I've read over 400 archived posts (whew)...as well as looking at the videos. The videos are somewhat of a problem because this new laptop only has 512 mg memory...LOOOOOng time to load. For example...to watch a SLOW 5-minute You Tube video takes 5-1/2 HOURS to load...keeps showing a couple words at a time...need to get two new memory chips to upgrade to 2gb. Thanks again...Take care. ---------------------------------------------------------------- eddems: I think you're basic download speed is killing ya, not the laptop. check you're speed at Internetfrog.com, if you see the link near the bottom for the old test, run it, I like it's graph of upload and download speed much better. ---------------------------------------------------------------- 92033: Thanks much. I'll check it out. I ordered a 1gb SDRAM Memory chip which just arrived yesterday. Hope this speeds things up a bit. ---------------------------------------------------------------- harley_rly: i hear u man, my computer is hopped up, but i live out in the sticks and have dialup...i only get 24kbps at most :( ---------------------------------------------------------------- 92033: Maybe there's hope for 'us' yet. :-) I phoned Tiger Direct to see cost of an upgrading memory chip to go from 512mg to 1-1/2gb. The guy I talked to suggested I get "PC TUNEUP 2.0" which bypasses the Windows Operating System (I'm using Windows XP Pro) and speeds up the system. I gave it a try and ordered the CD (cost $39.98 - $44.77 postpaid). It hasn't arrived yet but will let you know if it helps as he claims it will. He said that if I just ordered a 1gb memory chip my system wouldn't notice much improvement as it is, but this CD should do the trick. THEN...when I DO order the Memory chip(s) to get total of 2gb my system should zip through like a rocket with the CD just ordered. I'll let you know when I get the CD and about the results. Just hope I haven't thrown forty-five bucks to the wind. Thanks for the contact...appreciate hearing from you. TAKE CARE. ~ ED ---------------------------------------------------------------- Javin007: PC Tune-Up "bypasses the Windows Operating System?" This guy fed you a load of crap. (I work on computers for a living.) PC Tune-Up does nothing more than clean up registries, defragment harddrives (if your OS even needs it, some don't) and keeps drivers up to date (which you could do manually.) That guy's an idiot, or just a liar. Could be both. Unless you were buying PC Tuneup 2.0 from Tiger Direct, in which case we can add "sleazy salesman" to that. What are the specs of the laptop? Go to Start/Run and type in DXDIAG. This will give you a quick snapshot of the specs. Specifically, I'm curious as to the processor speed/type. For a 5 1/2 hour "load" you're more likely looking at network slowdown issues (although 512 megs for XP is WAYYYY too little. I HATE when they put PCs together like that). The RAM upgrade will show significant speed increases, but no improvement with YouTube videos or other downloads. I'm glad to see you are returning the CD. ---------------------------------------------------------------- 92033: Thanks much for your input...appreciate it very much. I checked the DXDIAG as you recommended. Here's the info on it: IBM ThinPad Laptop PC. Model # 23738TU. Intel Premium M 1.70GHZ. 512mb SDRAM Memory chip.Page File- 351mb used,513 mb available. Direct Version-Directx 9.00 (4.09.0000.0904). 512 mb SDRAM-Actual 212 Ram. AVAST Anti-Virus. MS Windows XP-PRO.. Dialup Speed-40kbps. PC2700 SDRAM 512mb Memory Chip installed. I ordered 1bb memory chip which arrived yesterday. Now I have to figure out HOW to remove the bottom of this laptop to install it...lotta small screws on it. :-) Oh, total memory shows 32mb. I don't know if this means much to you. I note your comment that the added RAM memory WONT (?) speed up loading YouTube videos? Is that correct? If so, why not? Thanks again. Take care. ~ ED ---------------------------------------------------------------- Javin007: :) At the risk of boring too many people, here's how memory in a PC works: You have two kinds of memory: RAM, and Hard Drive (technically there's three, as there's also onboard video RAM on video cards, but this is primarily used for 3D video game textures, so can be mostly ignored.) Your harddrive's read/write speed is determined by the type of harddrive it is (most are SATA now) and the rotation speed (most are 7200 RPM, though the specs for your system say yours is only 5400 RPM, but there are 10, 15, and even 20K rpm models out there that are exponentially more expensive.) No matter what, harddrive memory will always be degrees slower than RAM. RAM on the other hand is a small chunk of memory that is "temporary" memory, but very fast. Its speed is determined by the type of RAM (DDR2 being the current common one for notebooks, though DDR3 is available with some motherboards (you can ignore this, though, as you can only handle 2 gigs max of DDR with your system). The motherboard will determine the limits for the RAM that can be installed.) When running *ANYTHING* on your computer, and I mean ANYTHING, it must first be loaded into RAM to be accessed by the CPU. The computer doesn't directly access the harddrive. So this means when your operating system is loaded (Windows XP) the entirety of all running processes for the OS have to be loaded into RAM. Now, Microsoft claims that Windows XP only requires a minimum of 64 megs of RAM, but recommends 128 megs. I challenge you to find me a Windows XP system that only uses 128 megs out of the box. It's not atypical for an XP system to chew through all 512 megs of your RAM, leaving no RAM available for other applications. (Interestingly, the default setup for your laptop is only 256 megs of RAM, yet yours is reporting 512.) What happens when there's no RAM left? The system has to then start trading things into what is called "Virtual Memory." VM is nothing more than a file on the harddrive that will temporarily hold information that SHOULD be in RAM, so the RAM can load more info. For instance, say you have a process that's using RAM, but you want to watch your YouTube video. As the video is ready to play, the system will take the other process's data that's in RAM, write it to the harddrive, load your video into RAM in its place, play a portion of it, write the video to the harddrive, load the data for the process to RAM, let it run for a split second (so it doesn't lock up), write it back to the harddrive, load your video into RAM and play a short clip, etc. etc. etc. The result of low RAM on your system is that applications will open slowly (seconds or minutes, instead of instantly or a few seconds) and they will seem slow to respond, will stutter, etc. With enough RAM, your system can freely open as much as it needs into RAM, and ignore the virtual memory and all the slowdowns that it causes. Now, all of this being said, NO lack of RAM will cause a streaming video to take 5 1/2 hours to play. This is 100% going to be related to your downspeed. (Go to www.speedtest.net and post your results.) RAM slowdowns tend to be most noticeable when shutting down, or starting up your computer, apps will open a little more slowly, they will be slower to respond to button clicks, and video will be very choppy. Anything that is causing a YouTube video to take HOURS will be due to the system simply waiting to get the video in the first place. RAM wouldn't slow down the receiving of the video, but it would cause the video to play weird once it's downloaded. So, all this being said, here's the summary: Your system has a 1.7 Ghz processor, and your RAM is most likely 333 Mhz DDR. If you bump your memory up to a gig, you should see a pretty significant improvement in that your computer will, overall, just "feel" faster. It'll be more responsive, and working with large documents will be many, many times faster. This won't, however, affect your YouTube experience (unless you were getting jittery video often, not the same as "buffering" video.) If you see "buffering" for a long time, your internet connection is your bottleneck. A test on www.SpeedTest.net will likely confirm this. However, if you get decent numbers on SpeedTest, then we could have something more sinister going on, though I suspect you'll find your numbers well below the 1 mbps rate. This brings us to actually changing the RAM. I've been out of the PC hardware realm (professional programmer now) for a few years, and was unable to find a manual for your particular model. However, if memory serves, this image should be a fairly accurate representation of the underside of your system: http://www.javin-inc.com/temp/thinkpad.JPG Don't quote me, but I BELIEVE the red circle will indicate the only screw you will need to remove to access the RAM. There should also be a small clip holding the RAM in place that you'll want to pinch to get the RAM out, and make sure that the new RAM snaps into place. (Sometimes you'll have additional empty RAM beds, and you can just put your RAM in there and end up with 1.5 gigs, but I suspect you'll have two 256 gig chips in there.) ---------------------------------------------------------------- 92033: Phew. Thanks again for your most indepth educational lesson. I appreciate all your help more than you realize. I attempted to answer this last night, typing in more than twice the amount of text as your to me, then suddenly realized there was a glitch and I was on another page...lost it all into the ionisphere. :-( Rather than try to retype all I wrote, I shut 'r down and went to sleep. Now I'm trying to recall all I wrote last night but failed to get mailed. I'm not a traditional typist, rather a one-finger bloke so you can understand the frustration there. I do, however, type at a reasonably good speed. With that said, let's continue. I went to search for Configuration of this IBM Laptop ThinkPad 23738TU and am copy and pasting it here. It's relevant to what I have to say...here it is: ********************************************************************************** Overview Specs Features Includes Warranty Supplies IBM ThinkPad T42 2373 Specifications Part # 23738TU Key Specifications IBM ThinkPAD T42 2373 Manufacturer IBM Manufacturer Part # 23738TU Processor Type Intel Pentium M 735 1.7 GHz Data Bus Speed 400 MHz Cache Memory Type L2 cache Installed Size 2 MB RAM Installed Size 256 MB Technology DDR SDRAM Memory Speed 333 MHz System Type Notebook Storage Hard Drive 40 GB, 5400 rpm Storage Controller Type IDE Optical Storage Type DVD ROM Read Speed 24x (CD) / 8x (DVD) Display Type 14.1" TFT active matrix Graphics Processor / Vendor ATI MOBILITY RADEON 7500 Video Memory 32 MB Max. Resolution 1024 x 768 Audio Output Type Sound card Audio Codec AD1981B Compliant Standards DirectSound, AC '97, SoundMAX Telecom Modem Fax / modem Max. Transfer Rate 56 Kbps Protocols & Specifications ITU V.90 Networking Networking Network adapter Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet Expansion Expansion Slots Total 1 x front accessible Expansion Slots Total 2 ( 1 ) x memory 1 ( 1 ) x CardBus - type II Interfaces 1 x docking / port replicator, 240 pin docking 2 x Hi Speed USB, 4 pin USB Type A 1 x parallel, IEEE 1284 (EPP/ECP), 25 pin D Sub (DB25) 1 x display / video, VGA, 15 pin HD D Sub (HD 15) 1 x infrared, IrDA 1 x modem, phone line, RJ11 1 x network, Ethernet 10BaseT/100BaseTX, RJ45 1 x display / video, S video output, 4 pin mini DIN 1 x microphone, input, mini phone mono 3.5 mm 1 x headphones, output, mini phone stereo 3.5 mm Miscellaneous Features Locking device keyhole (cable lock), administrator password, hard drive password, power-on password, asset ID, IBM Embedded Security Subsystem 2.0 Compliant Standards ACPI 2.0, ACPI 1.0b, FCC Class B certified, CE, MPR II, UL, BSMI, cUL, NOM, VCCI-II Operating System Microsoft Windows XP Professional Software Included Adobe Acrobat Reader, PC Doctor, IBM Rapid Restore Ultra, IBM Update Connector, InterVideo WinDVD, IBM Access Connections, IBM Access Support, Access IBM,(OEM) Battery Technology lithium ion Capacity 4400 mAh Average Run Time 5 hour(s) Installed Qty 1 Ambient Temperature Min Operating Temperature 50 °F Max Operating Temperature 90 °F Humidity Range Operating 8 - 80% Dimensions (W x D x H) Unit 12.2 in x 10 in x 1.1 in Weight Unit 4.9 lbs Warranty 3 Years Limited Warranty on parts and labor. IBM 23738TU Summary ********************************************************************************* NOTE...I DON'T BELIEVE THIS...I JUST TYPED FORTY MINUTES REPLY HERE and it instantly scrolled up like speed of lightning and disappeared like last night. I'll ATTEMP to try again later. So please don't reply yet as you need to read my discoveries in changing the RAM chip. Meanwhile, thanks again...take care. ~ ED ******************************************************************************* TRY #3...I'm Back :-) Your diagram showing where the RAM chip is located was right on. Thanks. Here's my DISCOVERY :-( The RAM chip installed was NOT a 512mg...but only a 256mg chip. The ads ans specs say it's a 512mg...NOT SO. I was lied to by either the manufacturer or refurbishing company who removed the original 512 chip and reinstalled a 256 chip. I was lied to by the Tiger Direct guy on the phone. There are NOT two chip slots...only one. So I now have a useless removed 256mb RAM chip. Replaced with the 1gb RAM chip I just installed. So instead of having 1-1/2 gb RAM, I only have 1gb. Here's the crux. To. go to 2gb RAM I'd need to buy a full 2gb RAM CHIP and discard the 1gb for which I just paid $39.99 ($45.00 with s/h). This means another output of almost a hundred dollars plus the $45.00 just wasted because they wont accept return once the sealed chip plastic was opened...even though I had no idea there was only ONE SLOT in this PC instead of TWO like the Tiger Guy said. Now...crux #2...this new 1gb RAM does nothing more to increase speed. I just watched a 2.01 MINUTE YouTube video which took a HALF HOUR to load, so I threw the money away for nothing, eh? There is no noticeable change except the 'speed' shows it now as 41.2 kbps instead of 40 kbps. Okay...now HOW do I get to speed this thing up to normal viewing in real time? I also saw an ad for 4bg RAM Gateway laptop with 120gb hard drive for $404.99 which is all suped-up with everything. I had to upgrade a LOT since I got this only four months ago...taking over a hundred hours to load it, like Internet Explorer 5 to 6 and then to 8 and now to 9. I'm using AVAST Anti-Virus, after trying for 23 hours to get ADVAR, then find out it didn't load because of problem on the servor's end. Added Firefox and upgraded twice. Loaded MS Protection but it created more problems so I deleted it...now with AVAST which I like. Soooo...I've literally spent over 200 hours to get this thng where it's at now, plus the wasted money for the upgraded RAM chip.and I still don't have increased speed. HOW do I get it? IF the processor has to be changed does this mean I have to gut the thing and install a new motherboard? If so, what kind of money cost are we talking here? I bought this four months ago as a refurbished unit only because I was able to get it on payments of only $25.00 a month. If I had to wait to get $400.00 cash I'd never have it. :-) Okay...that's it for the moment. Thanks much again for your help offering and detailed instructions...appreciate it more than you realize. Best Wishes And God's Blessings To You And Yours In Everything Always. Most Respectfully... ~ ED  ---------------------------------------------------------------- Javin007: Well, let's start with the RAM. If you're running windows XP, you can assume all the extra processes (virus scanners, and whatnot) will be eating up about 512 megs of the RAM. First thing to do is check DXDIAG again (start/run) and verify that it's now reporting the correct amount of RAM. (Don't be surprised if it's like 9 hundred something megs or slightly more. It won't report 1024 or 1 gig.) This being said, that will leave you with the other 512 for your applications. This box won't be running the latest and greatest 3D games, but I suspect it was never intended to. If the heaviest hitter you'll have running is along the lines of photoshop, the 1 gig of RAM you have now should be plenty sufficient. I wouldn't worry about getting 2 gigs. Not for this rig, anyway. Also, Avast is a great (and free) virus protection, every bit as good as Symantec's Norton, so good choice there. If your youtube videos are choking out, we need to start by verifying that it's an actual speed throttling problem. Go to www.SpeedTest.net and run the speed test. Come back with the results.

Topic by Javin007 8 years ago  |  last reply 7 years ago


Does anyone know how to make a cheap dog tracking device that can be worn around the collar??

Got a dog that likes to run with the Deer, and fortunately we have found him everytime after a couple of days. Would have been easier if we knew which direction he had gone though. Perhaps he will never learn.

Question by macduff45 6 years ago  |  last reply 4 years ago


DIY Drum Pad that Controls MIDI Device (Korg nanopad)

Hi all, I'm working on a project which involves a pipe like structure with something like a DIY electronic drum pad on top. (like a stand alone drum) When the pad is hit it, triggers a key on a MIDI device such as the KORG nanopad http://korg.com/Product.aspx?pd=415 under the actual drum itself. This nanopad acts as a remote control for tracks created using music software on my laptop. So when the pad is hit, it starts a track. Problem is, I have no idea how I will make the connection from the pad to the MIDI device. I was thinking about using a Peizo signal but am lost as to how to wire it up or if thats possible. If I use this instructable https://www.instructables.com/id/Electronic-Drum-Pad/ should I be able to simply solder the Peizo wires into the nano keypad relatively easily?  Long shot but if anyone has even the slightest idea what I'm getting at here, any help would be greatly appreciated. Thanks!

Topic by Bass Cadet 8 years ago


3D Precise position/orientation tracking for body-worn camera

Hi all, It's not a new question but the available technology keeps changing so I'll ask this again, having not found any current answers online that are useable at a diy, non electrical engineering level... I'm working on a project in which a body worn camera is tracked in space, then recreated as a virtual camera in the corresponding virtual 3d space (kind of like a lo-fi version of the cameras used on the "Avatar" set). This is to be done over 15-60 minute durations in an indoors area of about 30X30 feet. What I need for this is tracking of the camera's position and orientation in space, precise and continuous (as much as I can get, but at least within and inch or 2, and a few degrees, of the true values),  to be either logged on the tracking device and/or transmitted to a computer on set. Since it is body worn, it needs to be light and wireless. Since it's on a moving body in a space with some objects in it, optical tracking isn't really a good option. I looked at a wide range of solutions, from "flock of birds" and the inertiaCube on the crazy-expensive side to sparkfun's IMU sensors, but frankly am a bit bewildered by the selection and don't know how to figure out which is the best to try first, given my needs. I'm really not looking to reinvent the wheel or rebuild everything from scratch, just find a solution for this not costing more than a few hundred dollars that is fairly reliable. Software-wise I want to be able to get 3D XYZ position and rotation values from it that I'll be able to use in Realtime 3D software such as Max/MSP Jitter and the like. Any ideas, stories of previous experience with such setups, links, etc would be extremely welcome. Many thanks! nadav

Topic by nadvass 8 years ago


HELP! device to hang pots and pans that lowers with electric???

I have very limited space in my kitchen and leave my pots and pans on the stove when i'm not using them but they get in the way.  I remember, in the old days, they had ways to hang them from the ceiling and could raise and lower them with a rope.  Since I have limited space, I was thinking about a copper pipe mounted on a system where you could push a button to raise and lower the pipe along some sort of track mounted to the wall that holds the pipe out 12-18 inches away from the wall.  (Almost like a wire rack shelf idea where the shelf would electronically move up and down.)  I could then hang S hooks from the bar and hand the pots from the hooks and raise them up along the wall, out of the way until I need them and lower them without a pulley or getting a chair.  I can usually manage to change a lightbulb all by myself but I am lost on this idea.  Any inexpensive suggestions???

Topic by fixfireleo 4 years ago  |  last reply 4 years ago


OK Go's new video has a fantastic Rube Goldberg device

 OK Go has always been keen on including some well thought out visuals in its videos. Their latest is no different. The whole thing is one long Rube Goldberg device. Unlike most videos like this where the camera patiently tracks all the action, the sequence is pretty hectic so pay attention. Or watch it more than once. I'm sure the band won't mind.

Topic by fungus amungus 9 years ago  |  last reply 8 years ago


life sign ?

Hey i was wondering the human body lets off a elctrical siganal could you make a device that can track it and also could  i use a microphone to that picks up the siganal of the human heart or thermal imaging for life sign dector 

Question by tinker234 7 years ago  |  last reply 7 years ago


LED display to an Audio Click? Visual click track aid for drummers required.

Hi Folks, I'm searching for some info on how to make a visual "Click track" aid. In one of my bands, we use a click track on some tracks and live on others. I use a single in ear monitor for the click track which s fine for most tracks, but for some, I need the click fairly loud and this cannot be good for the old lugs long-term. So, I want to make a small LED display or two that can react to an audio signal that is fed from the click track channel. I've seen many instructables that show how to make LED blink/flash etc to music, but my requirements are a little different (I think). The click at the beginning of each bar is higher in pitch and has a higher velocity compared to the other click in that bar, so for example; Playing in 4/4 time signature: click 1 - Velocity =100 - pitch C5 click 2 - Velocity =90 - pitch C4 click 3 - Velocity =90 - pitch C4 click 4 - Velocity =90 - pitch C4 If playing in another time signatures ie; 3/4 or 6/8, then I would also need to cater for this in the display Questions: 1. Does anyone know how I could devise a system that would light a Red led for beat 1 and then perhaps a white (or other colour) led for the rest of the beats, but in a sequential fashion? 1,2,3,4. 2. Is it possible to change which led flashes based on either pitch or velocity? I could even make the front of the led display show actual numbers over a perspex cover so at anytime, a quick glance will show me exactly where I am in the bar. So rather than coloured leds. So to recap, I'd like to be able to take an additional audio feed from the click track channel from a mixer, into this new "drummers visual click track aid" device and have it react to the clicktrack and display that in the form of beats per bar based on either pitch or velocity of the click track. I currently use a couple of wood block sounds for the click track because they are very clean and short. Many thanks for taking the time to read through my requests and if you're the kind of clever person who could make such a device, I'd be more than happy to pay you for your input and suggestions. Many thanks in advance and I look forward to hearing from you soon. Cheers Phill

Topic by CrashCourseMuso 7 years ago


A tracker to find your lost item or keys

Hi guys, i want to make a tracker device which can track keys or items, but i have no idea what sensors do i use to work in a small parameter, any help? 

Topic by anepzamri 5 years ago  |  last reply 5 years ago


Detecting several different signals within a certain distance?

Hi guys,  I essentially need a device that emits a signal, while simultaneously tracking whether another device emitting the same signal enters a certain distance. If another device enters said distance then it will alert the wearer. I think this is possible, but haven't quite got the knowledge on whether it is possible. I thought about using GPS to relay wearers position to a server, which can calculate whether another device is in the vicinity and to send a reply back to the wearer, but to send data would be a continuous cost, something I'm trying to eliminate.  Radio frequencies may be another avenue to go down, but again, not sure.  In my mind I would have say 10 devices attached to different people in a rural area, and each person would be able to tell if there was another person (and device) in say 100m.  Anyone got any ideas?

Question by kief54 1 year ago  |  last reply 1 year ago


Someone is listening. I think it's a baby monitor or something roomate situation. No babies in house. how to find?

I need to find out how someone in a 3 bedroom house is hearing me. I have a scanner can we track a frequency? what if its wireless. Need help fast.

Question by 9 years ago  |  last reply 9 years ago


I just bought a blitz phone from wal-mart and my bro lost it! how will i find it!! with a tracker or somthing? plz help!

Its a Verizon Wireless Samsung Blitz phone and i just bought it with my b-day money!! i am ripping p'ed off right now kuz my brother lost it-IT WAZ $100!! i almost never get that much $$$$!! Please some one help me! can i track it with a tracking device or somthing? pleeeaase some one help me!!

Question by 9 years ago  |  last reply 8 years ago


What stepper motor should I buy?

I am building a device that goes around a track at set times and am not sure which stepper motor I should buy. I know that it must be able to reach 2000rpm to achieve the quickest time required but don't know where to buy the stepper motor and which stepper motor would be best.The fastest speed the device will need to travel is 10m/s. I am also going to use an arduino to control the speed. Any responses would be greatly appreciated. Thanks 

Question by alex cooke 4 years ago  |  last reply 4 years ago


Really Cool, Solar Powered, Balloon Carried, LED Lit, GPS Tracked Project

Hey everyone! I have this pretty sick idea for a project, but I need some help with the details. Basically, it's a cube tied to a balloon, and inside the cube, there is a GPS device, back up batteries, LEDs (sticking out through the sides), a noise maker (the one from Make Magazine #14, will explain later), a cell phone, a cell phone charger, and instructions. Also, I will hope to have the cube be solar powered. So, what I will do is send off the balloon with cube attached, and the wind will hopefully bring it to someone, but if it doesn't, not to worry, the LEDs and noise machiche will catch peoples attention. When someone finds it, they will read the instructions, and continue the chain. Here is what I need help with, having basically no electronics skill: 1: Where can I purchase balloons that are really thick? 2: How will I make the cube waterproof? 3: Right now, I'm pretty sure that the smallest trackable GPS device is a cell phone (being tracked by Mologogo). Is there anything smaller/easier? 4: Would a solar panel be able to power everything in the cube? 5: How can I wire it so the batteries can power the cube when there is insufficent light, and the solar panel can charge the batteries when there's light? 6: How do I put it together? 7: Is there anything I'm overlooking? 8: How's your day going?

Topic by TWO-BY-FOUR 10 years ago


AC Power from a Battery

I've got a Garmin Forerunner 201 that is recharged by plugging a cord into the wall socket. It has a cradle type device that serves to connect the device to the cord. It does not have a USB connector.The battery life is 12 hours, but I'm going on a four-day bike ride (camping overnight), so I need a way to charge it since I won't have access to AC power.I've searched projects and gotten lots of hits on creating a USB charger from batteries, but I can't find anything on creating a power pack (with outlet) for charging my device.Does anyone have any suggestions on what I could do/use? I'd hate to not be able to track my route after I'm done.

Topic by samfelis 10 years ago  |  last reply 10 years ago


How to increase life of a device using 3.7v li rechargeable? Wire second in parallel? Use battery with higher mAh?

Hi All Looking for some advice for a project I am working on. I am using mini-GPS trackers with a SIM card to track movements of small objects, so size is an issue. I have a GPS tracker I like that comes 3.7 v rechargeable lithium ion battery, I think it's something like 700 mAh (I will have to double check when I get home). Once removed from the case, the battery and card fit into the space of the objects I am tracking (spheres of about 45 mm diameter, so a little bigger than ping pong balls). Anyway, using the settings necessary for tracking these objects, the tracker only lasts 3-4 days before it's out of battery, and I would like it to last 10-14 days, ideally. How might I go about extending battery life once the trackers are deployed? Should I add a second identical battery in parallel? Try to find a rechargeable battery with same voltage and higher mAh? (And does increasing mAh increase battery size?) Cost and size are issues, and I also wonder if I could replace the batteries with, say, a disposable battery type in order to get more time -- I don't expect to recover the units after they are deployed. Normally replacing a rechargeable lithium ion battery with disposables would be dumb, I don't know enough about batteries in general to know if disposables of the same size/voltage might have more "oomph". Thanks for any thoughts or advice you can offer!

Question by kimwilliamsg 2 years ago  |  last reply 2 years ago


where can I buy a motor, lipo, esc and arduino?

I am building a device that goes around a track at set times and am not sure what I need and where I should buy it. I know that it must be able to reach 2000rpm to achieve the quickest time required but don't know which motor would be best.The fastest speed the device will need to travel is 10m/s. I have also been told that I will need an arduino, esc and lipo. I am a beginner and don't know where to start. Any responses would be greatly appreciated. Thanks

Question by alex cooke 4 years ago  |  last reply 4 years ago


Can anyone tell me how to make a device that will play a song from an iPod whenever someone gets close to it?

I am an art student looking to make a project that will "scream" in fear (play a pre-recorded sound) every time someone gets close to it. So far all I have is a proximity sensor. I sent an email to my teacher and he suggested having the track play as a loop and then using a transistor and a relay to switch the signal through a modified audio cable. I haven't been taught how to do any of this and my teacher is not responding to my emails and I am running out of time. Please help!

Question by fullthrottle800 7 years ago  |  last reply 7 years ago


8-bit playback help?

Okay, simply what I want to make is a small device using a microcontroller (an arduino or maybe something more basic) and all I need it to do is play an 8-bit track when a button is pressed. unfortunately I have little experience in the area of programming and microcontrollers although I have basic skills like soldering. any help is greatly appreciated , Thankyou!

Question by zeon 7 years ago  |  last reply 6 years ago


GPS based Camera Tracker

I just wanted to check with the community out there to see if anyone knows of a good place to start building a tracking system that is GPS based.  essentially, a person or object will wear a gps device and there will be one placed on a camera gimbal.  I am hoping to create a way for an arduino to do the math so that the camera stays fixed on the target no matter where the target / camera moves. Any thoughts??

Topic by crashpilot 6 years ago  |  last reply 6 years ago


how to make a transmitter and a receiver attach from a toy car so that the car will go to the transmitter place?

Hello every one i need some help or any suggestion. about transmitter and a receiver that is being attach in a toy car so that if the transmitter transmit signal the receiver from a toy car will detect it and the toy car will go to the transmitter antenna area... thanks for your answer or suggestion...

Question by jir3h 8 years ago  |  last reply 8 years ago


Head mounted camera records what you look at

The EyeSeeCam is a head-mounted device developed at the University of Munich Hospital that uses four cameras to record what your eyes are looking at. Two cameras are used to track your eyes, one records what your head is pointed at, and the last one uses the data from the first two cameras to record where they're looking. The creators list some nice uses for this, but I keep thinking that this would be great for a first-person shooter. Or maybe something more altruistic like an interface for those with ALS that the EyeWriter was designed for. EyeSeeCam via Hack a Day Reading a book with EyeSeeCam Part 1 from Johannes Vockeroth on Vimeo.

Topic by fungus amungus 8 years ago  |  last reply 8 years ago


Solar PV tracker that can be built by kids

I am looking for instructions for a group of 12 year olds to use to build a small device that is capable of tracking a light source the way that solar PV panels can be made to do. Only one of the kids has (minimal) robotics experience, so this would have to be a very entry-level project. There are some great projects on this site but they are way beyond our capabilities. Any help would be appreciated!

Question by Codys Mom 7 years ago  |  last reply 6 years ago


The Last HOPE....

I realized I mentioned this before, but anyone that is interested in the last HOPE convention to be held at the HOtel PEnnsylvania, before the historic site is torn down; it will be held in New York City, at the Hotel Pennslyvania ( info on the last HOPE convention can be found at the link ). Steven Levy to keynote. As part of a social experiment, attendees HOPE in July will be issued badges with electronic tracking devices. Large displays will show in real-time where people go, with whom they associate, for how long and how often.The tracking technology, known as RFID, is fast becoming an unseen part of everyday life. This July, for the very first time, the general public will be able to participate in the transparent operation of a major RFID tracking program.Conference attendees will participate in games built around the tracking system. Players will seek ways to protect their privacy, find vulnerabilities in the tracking system, employ data mining techniques to learn more about other participants, and choose how much personal information they will disclose in order to play.This demonstration will be open to the public at The Last HOPE conference from July 18-20 at the Hotel Pennsylvania in New York City. The first 1500 pre-registrants will be guaranteed an RFID badge enabling them to participate in the game.Segway Racing Back by popular demand, we will once again have the Segway "personal transporters" available for attendees to ride and race.Vintage Computers Playground Also returning, The Mid-Atlantic Retro-Computing Hobbyists (MARCH) organization will be bringing in an assortment of older machines for people to play around with.Floor LayoutThe Last HOPE. If you miss this one, there's nothing left to say.In lieu of donations, flowers are requested. I MISSED the Last HOPE !

Topic by Goodhart 10 years ago  |  last reply 10 years ago


Motorless Ball Machine Idea

This is another one of those ideas I had for awhile hoping I could eventually use for myself but I don't think I'll ever get to a ball machine. K'nex is dieing hobby for me. Anyways the concept is pretty simple. As long as you don't have any other motorized moving parts and all you need is a lift, this should work. What if you just made a simple rubber band powered sling? You could have 2+ balls running on the track. One hits the bottom and then stays right over the launcher. Another ball will pass over a trigger device that shoots the launcher and the the ball flings upwards. Suppose it could work? The trigger device would be a little tricky but if you end up getting it to work, plenty more people could make ball machines if they don't have motors. Of course you'd be limited to the amount of bands you could place on the device but that's better than nothing.

Topic by TheDunkis 9 years ago  |  last reply 9 years ago


Would like your thoughts on our development project

We have been developing a pill dispenser that is integrated with your smartphone. We used 3D printed parts and an RFduino microprocessor. This device would allow tracking of medications from the factory to the end user, eliminating couterfeit meds. In addition it would remind you when to take your meds, and notify your doctor or pharmacy via the internet. Watch the video and let me know what you think. https://www.youtube.com/watch?v=5yNBGXBSqLY

Topic by InteMed 4 years ago


Any ideas for a every-room-micro-train? Railgun-railsystem?

Hello,my girlfriend and I moved into a new appartment.We allways had this idea of a tiny train that will drive from room to room, to deliver notes or just for the fun of it.After I looked at the miniature model trains (z track) I decided that it both would still require larger holes to be drilled into the walls and a meter of rails costs about 20-25 euros- which would be horrible expensive for a long track.Now I had the idea of using a railgun system and build my first one.(Two strips of aluminum-tinfoil +-9V, a nail with two strong earth magnets on each tinfoil-track) It worked even though I used strong magnets without goldplating and a rough wood plate where I simply "gluegunned" the strips to. It halted at some bumps but still it was amazing how little work this involved.I now think about using a smaller "railgun"-system to power a tiny train-device.Any thoughts if this could work out?I was hoping if I made the curves wide that the angle would not stop the cart.(pic attached also available at http://www.nottoxic.com/wapcc/ae/aqua/railgunrails001.png )

Topic by schorhr 11 years ago  |  last reply 11 years ago


Can someone please help me create a simple 7-segment number display? [see below for details]

Background info : My name is Simon. I'm a member of the Classic Celica Club of Victoria (Australia) that competes in an anual event called the Winton 6hr Regularity Relay. It's a 6 hour long track event with about 40 teams and 6 cars per team. Each team has one car on the track for the 6 hours. Prior to the race, each car nominates a time that they believe they can consistently do for their share of the race (usually approx. an hour each). Points are awarded for each lap achieved that is within 1 second of the nominated time. Points are deducted for any lap that is faster than the nominated time. The thing is THE DRIVERS CANNOT CARRY ANY FORM OF TIMING DEVICE IN THE CAR. The aim : To build a board that clearly displays a 3 digit time. (eg: 1min 56sec).  Team members will time the car on the track and then use the board to display the time for the driver to read as they pass by the pit wall.  (note: this practice is not against the rules). The requirements : The board must be big enough, and clear enough, to be read from >75m away. The adjustment of the board must be very quick and intuitive. (the task of timing is shared around and there's no time to train people to use the device). The board must be light enough to be held by outstretched arms. No timing device is required in the board itself. The time displayed on the board isn't always the time that is recorded. Adjustments are sometimes made for one reason or another. Scrolling through the numbers is fine, so long as you can scroll both up and down. Each digit should be completely individual (ie: not linked). Layout : [see attached images] I was thinking of using a typical 7-segment display layout made up of 79 x 10mm LEDs. The actual physical construction of the board is well within my ability. It's all the circuitry that i am clueless on.  I am a total newbie so please be gentle when describing electronics. I'm new to instructables but i have spent quite a few hours searching this site for answers. The thing i've found is that my device is far simpler than anything posted on here but i'm still too much of a newb to work out how to do it. ps: I hope i have posted in the correct section. Simon.

Question by Si Mo 8 years ago  |  last reply 8 years ago


electronic numeric display board for volleyball

I have searched the Internet hard for a reasonably priced electronic numeric display board to no avail.  I am interested in constructing a remote control scoreboard for volleyball similar to basketball scoreboards deployed in high schools.  For many years I have played and continue to play a LOT of drop in volleyball at various local Rec Centers.  It would be great to be able to keep track of the score with a remote control device in your pocket while playing the game. Alternatively please let me know of any high schools being torn down which could be an opportunity to save a basketball scoreboard that would otherwise be relegated to a land fill site. When you think about the utility of such a device, why hasn't this project been done before?  Maybe it has and if you have any info then PLEASE forward.   I would seriously entertain any posted price for such a completed device if it exists as the hero factor is huge.  The advantage of building it yourself is that you are in a position to manufacture duplicates for others and you become the repair man. The bigger the display board, the better.  I know they exist but are mostly cost prohibitive.  At this point I am prepared to start with a small display for the prototype in order to get this project started since I am very enthused.

Question by rjwiles 6 years ago  |  last reply 6 years ago


How to make a DIY relatively long distance radio signal emitter/tracker? Answered

Hi, This is a bit of a two-parter. The first part is that I would like to make a DIY radio emitter that could transmit to a distance of 1km. I'm not sure about the laws in South Africa, but it should be legal if within the ranges prescribed by the law. The second part is that I would like to create several devices that could track the nearest radio signal on a specific band or band range (as I would expect that I would have to use a filter for both the transmission and receiving). I think that direction of the source of the signal would be sufficient.  The reason for this is that I have had a few instances over the years where people got lost while camping and had to sleep in the wilds because it was too dark to find their way back to camp. Any advice, thoughts, links would be much appreciated. Also, if you have any other ideas that will cost about the same or less, that would be awesome to try out, too :) Best regards, Vuur

Question by Vuur 2 years ago  |  last reply 2 years ago