Topic by bluebox17 | last reply
I am trying to make my own flasher controller for a pair of LED light modules. The 12 volt, low amp draw lights are to be used on a golf cart that we use when the patrol cars are not needed on campus. Traffic control is the main use due to being able to put it anywhere the patrol cars will not go. The flash patterns can be any type as long as it is automatic, and keep changing, like the strobe lights on police, fire, and EMS units. Some have 4 patterns, some have up to 18 patterns. Any one have a diagram or circuit design that may work? Thanks for any help.
Question by kstokes606
I have a unit that i'm thinking of putting wheels/rollers onto, so i can store some DVDs/Blu-rays under my bed. But i started thinking perhaps i can somehow make it automated, so say when i press a button that it comes out. I wouldn't really know where to start, idk even how easy this would be. I did have a quick look to see if anyone had already published anything like this, i can't really say i came across anything, though as i said it was only a quick look. Any help would be appreciated.
Topic by BradSabbath | last reply
This is a list of projects, made by our members, that have been entered in contests. If you like them and think they should win, go and vote for them. The Bits Bug Grilled BBQ Courgette How to share and track your books, using BookCrossing WTFBBQ Falafel 'Hacker's Delight'
Topic by Hack42 | last reply
Hi everyone, I was wondering if I could get some help with a project I'd like to make. My truck's stereo died, and instead of getting another stereo, I'd like to make a unit that just uses my MP3 player. Junkyard stereos are of dubious condition, and usually overpriced, and I'm too cheap to pay for a new stereo. I never really used the radio or CD player on the old unit; I just want basically a jack for a MP3 player/laptop, volume control, and power switch, powered by 12V and able to be hooked up to 4 speakers. I have some basic electronic knowledge, but not enough to make something like this. Could someone maybe, possibly, provide me with a diagram or ideas to get this started? Thanks a lot!
Topic by Braunchitis | last reply
Where can I find an incredibly basic GPS? I am looking for bare minimum, something that just showed its location or that had an LED that got brighter as you got closer to an entered point. I am just trying to determine if simplistic GPS units are still available amidst the flurry of moving map, full-color, talking, computerized models with built-in A/C and a fridge. I would like to get into Geocaching, and just have a cheap GPS, but the cheapest ones I can find are still LCD screens with moving maps that cost $200. I'm hoping for well under $100, but I'm not holding out. I'm a geeky high schooler with no budget to speak of.
Topic by CameronSS | last reply
Hello again everybody, bwpatton1 here with another one of his strange Ideas..... not as dangerous this time. Well, we built a gameroom, and currently it has a 10000 BTU window unit, in the South Texas summer it has a hard time keeping up, it also uses 900watts, well 900watts by itself isnt bad but we have two of these b/c we have two floors. I was wondering if i could build an AC to help supplement the run times of these AC's. My idea was to get an old refrigerator (and keep it outside) and run copper tubing through the freezer and into the refrigerator area and out of the refrigerator. Then, run this copper tube to a copper coil with a blower fan. Sound good sofar? Then I would run the end of the tubing back to the top of the freezer, somewhere in there there would be an inline pump somewhere............ OH and the lines would be filled with water/antifreeze??? Does anybody think this would be efficient enough to build? Or am I just wasting my/your time Diagram- the thing to the left is the refrigerator, and the squiggles are copper coils, and the thing to the right is a blower/coil. You were supposed to be able to read the writing on the diagram but the camera wouldnt cooperate
Topic by bwpatton1 | last reply
Question by mortemere5 | last reply
I want to make a mini fridge so i need peltier units. I can post the mini fridge instructable when I'm done but i neeed peltier units!!
Question by sky0 | last reply
I design micro - and slightly bigger - biodiesel units. I want to mix the methoxide with a non-electric mixer. Slow and steady is all that is needed. I have the idea of using a mixer that works like an egg beater or butter churn. The mixing container will be of 100-200 litre capacity with a closed lid to avoid chemical fumes. Can anyone directly me to where I can source something like this? I have been to a couple of companies in the food processing industry - to no avail (yet) - as most equipment is electric. I work from Centurion, Pretoria, Gauteng, South Africa - so local will be lekker (excellent) !!
Question by Bioman.co.za | last reply
Hey all! Just thought I would try and save myself some time, by inquiring with you fine folk first.. I am attempting to build a mini turbine system to generate power from a home standard incoming water supply... The PSI is easily high enough to run a mini power gerenating system without a significan/noticable drop in water pressure of the home.. So anyway, this is the prototype that I just knocked up to give you the jist of it.. Any comments on improving the design would be appreciated.. eg.. flow, restrictions etc. The turbines will drive a belt connected to a dynamo... Thanks for your time.... LftnDbt
Topic by Lftndbt | last reply
Hey All, In my car i have an after market HU with a usb port that my iPad 3/ iPhone 4s / iPods can connect to. However when my iPad is connected to it is unable to charge. The charging indicator in the iPad has the little lightning bolt going through it, indicating that it is indeed charging however the iPad looses about 7% of its battery every hour. Does anyone have any suggestions on how i can get my iPad to charge through my HU? Cheers
Topic by wrignj08 | last reply
Hi. I got problem and I cant find the solution. got outside unit inverter aircondition, but indoor unit is missing (resason why I get unit for discount price ) and now I cant run outside unit, because inverter AC you cant control without that PCB from indoorunit but I cant find new-used I search like crazy days and no result :( is any chance to run that unit without original PCB ? maybe with arduino etc ? and if anyone know for good store for AC parts (no matter which continent), I need for AIRWELL GC plus 9 thank you for all informations
Topic by primoz1
Would building an array of peltier units in a windows frame work to cool down a room? This way hot air would stay outside and the inside "windows" would be cold. Either using heatsink and multiples computer fans to throw air in room or pumping water in pipes then on the units then to a big fan. Also, could this run on solar cells placed on the outside?
Question by gazoutg | last reply
What do you think of the Presidents of the United States of America (the band)? Does anyone else on Instructables like my favorite band? If you haven't heard of them search for lump, peaches, or kitty on youtube.Attached are some pics I made using GIMP 2- te ones with the laser and the long poofy hair.
Topic by hobo8675309 | last reply
I was looking for a HowTo on building a capacitor charging unit. I saw a thread on a forum a while back that said you could create a large EM Pulse by sending a huge current down a coil of wire. I was looking about wiring up a bunch of these 220uF caps from Maplinhttp://www.maplin.co.uk/module.aspx?ITAG=SPEC&ModuleNo;=12777&doy;=28m9#specThey are the last ones on the list.Would a few of these be sufficient to produce a large EM field, one that could fry sensitive electronic equipment. And how would i go about charging them all to the full capacity.Also while on this topic, would this be an efficient way of generating an EM pulse, or could you suggest any other ways of doing so.
Topic by EthanV2 | last reply
HI, I found this site by accident really – but I’m glad I did. I’m not sure if many of you have heard of The United Inventors Association of America – but in the event you have not – we are the largest Inventor Organization in the world. We’re also the only Government registered non-profit 501(c)3 in the inventing industry. Our mission is simple – to educate inventors so they are not taken advantage of. There are hundreds of thousands of creative people like those here on instructable who are taken advantage of each year as they work their way through the inventing process. The UIA helps to arm them with education about how a product is taken from your basement to the store shelf. Membership in the UIA is FREE – and the opportunity to learn from professionals in the inventing industry, well, that’s priceless. If you get a moment check out the UIA (www.uiausa.org) or find a local Inventor Group in your town! Thanks – and keep being creative. Mark www.uiausa.org
Topic by The UIA | last reply
This morning I awoke to find Our president strewn about the news in a rather comical way: He had nearly been assassinated by shoes (joke) and I took some video using the technique from my recent instructable and converted it into a gif if you are going to use this on anything please make sure I'm mentioned, it's just common courtesy XD
Topic by Pumpkin$ | last reply
I had got this PSU for free from PC world, the guy who gave this to me does not know if it works or not... This is my first PSU, I never used one before...So I am asking you how to test this PSU. I hear they have safety wires that must be connected to another wire or something - I don't know...I hope you can help me... Thanks!UPDATEYay! My PSU works :-)Thank you all who helped me!And even better, I do not need to use a power resistor to keep the PSU on!
Topic by Plasmana | last reply
Hi, I'm wanting to put some led indicators in my car because they are so efficient but my current flasher unit isn't designed to run such a low load. It is also relay based which probably isn't the most efficient way of doing things and with it being an old mini it sometimes rattles itself at whatever rate it feels like flashing at at the time so I wanted to use a transistor instead. I've come up with the circuit attached and built it but when it is running all the indicator lights for the hazzards, the transistor gets hot! Surely there is a better way of doing it? Could someone have a look and see what could be changed? I don't know much about transistors but I know that I'd be better getting it to 'saturate' and act as a low resistance switch but I don't know how to achieve that. It also has to run under two loads, indicators and hazzards, and has to flash at the same rate for each - between 1hz and 2hz. http://www.dprg.org/tutorials/2005-11a/index.html I think a variation of this circuit might be better (it makes use of the discharge pin rather than the output pin), with the load at the ground side of the transistor because it has to be an output pin on the flasher unit. I've got some BFY51, BUY82, BD743B so it would be great to use one of them. in short: what's the best solid state fixed rate 12v flasher driver using a 555 that can supply around 2 amps using as few parts as possible? Thanks for your time, and sorry if I've done anything wrong!
Topic by arichardson | last reply
How can I connect my mp3 player to the built in amp on my cars head unit. I suppose i need to do some soldering but I dont know what I am looking for. If I connect the MP3 player to the speaker outputs it plays too softly. I need to get it going through the amp in order to play loud enough. How Can I do this?
Question by kokaine | last reply
I have multiple UHF microphone units. They have two antenna's on the back of them, it picks whatever is the strongest signal for 'true diversity'. My question is, Instead of buying those really expensive antenna distribution units. Would I be able to group each of the antenna connections from the units to one antenna for each side and use two high gain UHF antenna's to receive the signal. I would think that the receiver units would pick out the signal individually as they are set on different channels. All the units are exactly the same with the same antenna's. I could be very wrong with this however! Any feedback is very welcome! Thanks
Question by oscarthompson | last reply
Im having issues with my radio it has bad static.. finally sick of it i started to test.. tested resistance on antenna on the ground to the unit.. looked good. turned it on and tested for 12 v on red and yellow wires they were good i happened to put it on the ground with the car on and i get 10 v on the ground i also get 10 v on the head unit case. when i unplug it everything goes back to normal.. cannot figure this out and any help would be great.
Topic by randrews-10 | last reply
Hello all, I was browsing, but not limited by, the food instructables and saw that all the measurements were in non-metric values. How would it be if European members can convert cups for milliliters, for example. It would certainly not be difficult to do, but takes some time to get it all working. I know the theory of jQuery but never tried it, so thats why Im saying it. It would help so incredibly much/.
Topic by TT2 | last reply
I have recently purchased a new window-mount air conditioner, and now I am looking at the crappy old one saying "I can't just throw this away after having read the Dumpster Dipping instructable!" Any ideas on how to reuse/recycle this horribly used (purchased ca. 1988) A/C unit that hardly puts out cold air anymore?
Topic by V-Man737 | last reply
In the video released by the windbelt creator, he mentions that his PCU only costs about a quarter. I dont know if that is his mass produced price, or his off the shelf price, but does anyone have any ideas about how to make a PCU for say, under a buck?
Topic by fafnir665 | last reply
I have an older AC wall unit in my apartment. It has 3 dials – one for temperature (1-8 where 8 is coldest), one for fan speeds (low cold, high cold, low fan, high fan), and a manual lever that opens the vent in the back. I’m reciting this by memory as I haven’t actually looked at it closely, but it has one of the larger 3 pronged cables that plugs into a dedicated outlet in my wall (perhaps used for a higher voltage). In any case, my intentions are as follows: • Have a timer for the AC unit to plug into to turn off on programmable intervals o Monday – Friday it will be on after 6:00pm until 7:00am the following morning. • One nice feature would be to give it a thermostat capability. o If the temperature is below 70 degrees during these time intervals, for instance, then the AC unit will shut off, otherwise it will power back on. • Another obscure (and I’m sure complex) feature would be to allow remote access to the timer. I know that this requires some unique hardware, but I’m familiar with programming and can visualize the methodology in telling the timer/thermostat unit a different set of commands (let’s say I know that I’m coming home early – I send information to the device via the internet to have it turn on a few minutes before I get home). I understand the last part is quite complex, but it’s not a priority at all, rather, a neat little feature that would make this all the more worthwhile (and in my eyes more interesting). I know that there is a similar device out there (can’t remember the brand name) that has a lot of these features, but I’m not willing to drop $300+ on something like that. For now, my priorities are listed in order per the bullets. First and foremost is being able to program a timer for a wall AC unit. Second is to have it detect the temperature of the room and set it accordingly. And third is the availability to ‘talk’ to the device remotely. My question for you is: how can I get through the logistics on this sort of project? What components (hardware) am I looking at (general price range), and what degree of difficulty will this entail? I have my computer practically right next to my AC unit, so communication with the device won’t be difficult in those regards. Otherwise, I’m just looking for tips and pointers. If someone happens to know of a (cheap) unit that does most everything that I’m looking for, then great. I’m all ears and really appreciate any feedback.
Topic by Phoenix5794 | last reply
OK, here's the deal. My truck's stereo finally kicked the bucket and now I have no way to play tunes. The old unit had an aux input, which was the only thing I really used (to play my MP3 player). I'd like to make a small, simple unit that just has a jack, power switch, and volume control I could mount in my truck that would run off of 12V and power 4 existing speakers (8 ohm). After looking around at other Instructables, I realized that I don't really know much about amps. I think I could wire one up, however, if I had a diagram. I have a couple of LM386N's laying around I could use, if I knew how... So, could someone please help me out on how to make an amp for this? And any other helpful info? Thanks a lot!
Question by Braunchitis | last reply
I have 3 "iCamera 1000" camera units laying around. I do not have the rest of the security system they are designed to function with, but there has to be some way to make use of them and have some fun. I have lots of cat 6 cable and RJ45 connectors to custom make a cable if anyone has the expertise to figure out how to make use of these. Before posting here, I searched and searched here and on Google but only found information regarding the "normal" application of these cameras..... I was hoping for something more outside the box which is why I am here. I included a front/back picture. Thanks for any ideas!!
Topic by PigWhistle | last reply
Lately I've been looking into home water purification; and I was hoping I could get some community support, and ideas :) So far in my online research, I have found that active carbon works well as a filter. So, I was thinking I could sew some between two pieces of fabric, and then put it at the bottom of a pvc pipe, thus letting the water go through it; From there, I got the idea of making a wooden box, which will be just about (1 ft x 1 ft) all the way around. I'd also line the inside with a plastic sheet, like those found in a home pond. I think that would make a good housing for the filtering equipment; I'm still working out the details on the actual purification of the water; I have a basic understanding of it, though if you have some insight, please do share :) Also, if active carbon would be a good solution, where would be a good place to find it; I live in the Glendale, Arizona area, so somewhere around here, if you could.
Topic by James.Litewski | last reply
Hi everyone! I'm wondering what are some good resources to learn how to build a simple programmable CPU from 74XX logic chips. I'd like to build one where I use DIP switches to program the CPU. I don't have an EEPROM/EPROM/PROM burner, so using those are out of the question. I've seen some CPU's already that run an internet server, but they are too complicated/expensive to build and understand. I want to learn how a CPU can be built and the principles behind it. I have about 150 74XX chips, including a 74LS181 ALU unit. I also have enough capacitors and resistors for the project. Thank you!
Question by prrgg14935 | last reply
Ok, so i took apart a old lcd monitor and found a w78e65p-40 microcontroler unit in it. i have no idea how to use it and whit not, and it just slides out a holder, so it can be put back in. again no idea how to use it, but this site may be of help to describe it http://www.8052.com/codelib/w78e65.pdf
Topic by killmore231
TELL ME WHETER THE UNIT MEASURES LENGTH, MASS, TIME, TEMPERATURE, VOLUME, OR SOMETHING ELSE
Vote JellyWoo for the president of the United States of America! this website lets you enter in your name and then it will create a video for you. See my video as an example.
Topic by JellyWoo | last reply
A couple years ago we purchased a 31/2 hp power washer for those really tough grimy jobs around the house. Last winter we left it outside by mistake and I suppose there was enough water in the lower unit to freeze and bust. Anyway now it won't work, it just spews water everywhere coming from the lower unit. I called the company and asked to purchase the lower pressure unit to replace myself, but they would not sell it to me. In fact the lady told me that the lower unit could not be purchased, but that I would have to buy all the necessary parts to disassemble it and replace the parts. When I told her it looks as if the pressure unit bolts onto the bottom of the motor with 3 bolts and perhaps was keyed onto the shaft with a keyway, she then changed her story and gave me the name of a hardware store in a small town about 20 miles away who could repair it. I took it there and the owner told me that "Sure you could buy just the lower pressure unit and he could fix it for $175.00" I realize it was my mistake leaving it outside under my deck in the cold weather, but gee I only paid $198.00 for it brand new and the Briggs & Stratton engine still works fine. Can anyone help me? Thanks--Debra Kay
Question by Debra kay | last reply
I do work for a lady, and she seems to have a hoarding problem. She has 100's + bottles, gallons, AND trash cans of this "water". What is it? AND what is it safe to do with?
Question by onrust | last reply
I had a blown forward and pinion gear that I replaced last season. The rebuild worked for only a month until it destroyed both gears again. Did I possibly miss something on the rebuild that could of caused this? Incorrect shimming? or a high idle? Any help is appreciated.
Question by MurfNick
I'm working on a chair design that will be made of one pallet only and that can be build with as less requirements as possible (preferably reusing the pallet's nails). I'm almost finished with the design made of a 42 x 42 inch ISO pallet and the 40 x 48 inch pallet, because I heard these are used mostly thoughout the world. As I live in Europe I don't know if these pallets are accessible to 'ordinary people' in the US. Are there any more common pallets in the US that are suitable for building this chair? If anyone is familiar with what pallets are used in third world countries (if any specific) that are suitable for building this chair? Thanks, Cas
Question by casvandegoor | last reply
This is an idea that has been tried before with other type equipment & applications. However I think that I have found a way to limit the cost & over size of the application for the use intended. The rubb is that I need help with the fabrication. So I am hoping that the brain power will rally to help in a proto-type or test model of this idea.THE IDEA: A mini A/C unit to keep a vehicle cool for short periods of time 1-2 hours.Why needed?? I own a Private Investigation Agency and have very expensive electronic equipment inside sensitive to the high heat in south Texas during the summer.Equipment on hand for the idea:A. Small Cooler & HEater unit that can be found @ most Walmart, Walgreens, ect... Size 12"x 10" x 6"Input: 100-240VAC 1.2 A 40 watt Output 12 volt 4.0 A (looks like a tall showbox with a single hinge that opens like a center console-armrest-glovebox in a truck or van. Picture below...B. A DC/AC convertor also sold at same stores. The unit is very small but will power the unit very easy. 12 volt 5 A 100 watt, 4" x 3" x 3/4"C. a zeus sealed 12 volt battery 4-5 AH with the PWR use of cooler.D. VArious size small electric fans to be used a blower fans.E. PVC or duct work for the application.F. Optional Solar Cell for battery recharge to be mounted on roof of vehicle.I am sorry if my post is inapropiate for this forum or if I have used this post wrong for my purpose. This is my first time to post anything...If there is anything I can do to help with the concept please let me know.I will try and add Pic's of the parts later.THANKS!!!PS: total cost of everything brand new was less than $50.00
Topic by leebarret | last reply
I bought one recently and have had nothing but trouble.. replaced the cable and pen, then sent everything back only to have it returned saying it was repaired. He said he ran the unit for an hour without any trouble, but he didn't say he used the cable or pen. Soooo... I plugged in the 1/4" jack end cable and it doesn't stay put.. slides right out of the socket. I opened unit and the clip/prong thingy is bent backwards, so there is nothing to hold the jack in place so it can make a connection. I bent the prong up and it held the jack, but now cable gets hot, very hot, but pens don't heat. I'm guessing the cable has a short, but not sure. What I need to know is whether the prong for the jack was supposed to be bent down so it wouldn't touch and if so, how do I keep the jack in place. If it's the cable, should I just buy new one, maybe heavier, and replace the ends? The cable has 1/4" male on one end and rca female on the other.The pens have rca male connectors. I don't want to mess with the man who makes them any more,and would just as soon figure out how to repair it myself rather than try to get my money back.?
Question by dulciquilt | last reply
On my previous car, I hacked together an aux input with two CD-ROM plugs as described in many places on the Internet (here's one). I was really happy with it, and fully intend to do the same on my new (?) second-hand car, which also has CD-changer support, but no AUX. (Neither car had a CD changer installed, because I couldn't be bothered). The new car has steering wheel controls though, and I thought this could be a nice upgrade, but I'm really not sure how to do it. The pin-out diagrams for the CD changer plug (which I stole from here) for the CN702 12 pin connector shows lines 9 and 10 as TX signal lines. Since there are track (and disc) up and down buttons on the radio, I assume this is how the commands get through to the CD changer. And the phone obviously has support for headsets with track skip buttons. So the stars seem to align. Except for the details. First, a normal audio cable only has three wires and one with headset controls have four: Ground, left, right and comms. I think I can connect the following pins on the 12 pin connector to ground: 6, 7 and 9 and then 1, 2 and 10 get connected to the correct wires. Is this correct? Second, I have no idea if the actual signals sent to TX for a CD changer bear any resemblance to what the phone expects from a headset. Does anyone know? I can probably hack a test using a bread board. I think. Third: I really only dabble in these things. Did I miss anything really important?
Topic by CobusK1 | last reply
I have been looking to find a long heat sink like this one: http://www.anglia-live.com/products/kw/LAM-4-150-05-V/774353001_HEATSINK-FAN-150MM-5VDC but I can't find one that is cheaper or similar (Other than other models of this). I basically want to make a thin air conditioner with about 18 peltier units. I want one of those heat sinks on the hot side. I then want to do the same thing on the cold side or I want to use a bunch of mini 40x40mm fans on each cold side of the peltier units. Please let me know if you know any similar heat sink designs or if there is a name for this kind of design. Also, if there are no similar heat sinks, could I just go to Home Depot and buy a hollow aluminum square pipe and add a mini PC fan instead of this? I would assume it wouldn't be as effective because of the less surface area, but, it would be cheaper I think.
Question by knexpert1700 | last reply