Offline Instructable maker?

Is there any sort of program download on this site that can be used to make Instructables offline? I have a few instructables that I would like to make, but my internet connection is nowhere near good enough to make one.

Topic by scob89 10 years ago  |  last reply 10 years ago


Disaster Access [aka Instructables Off-Line]?

As I get more involved in Instructables, I'm constantly struck by just how much real-world useful information is covered by Instructables that could be an invaluable resource in just about any disaster situation! Being a bit of a prepper, my mind keeps coming back to the fact that without network access [for personal/local/regional reasons], all of that incredible information would be out of reach. :-( Being a "Pro" member, I've decided to build an offline indexed repository of PDF copies of Instructables that I believe would be most useful in disaster situations. I understand this is not something I could "share", because one of the fundamental aspects of Instructables Pro Membership is access to PDF copies for personal use. With that said, has anyone at Instructables thought about putting together and maintaining an "offline" edition?  I would gladly pay an additional membership subscription fee to have access to download such an offline archive edition that was updated on a quarterly [let's say] basis! I get how this might seem like a hard sell to the AutoDesk overlords, because of the potential for abuse via piracy, but I can NOT see how any pirated access to the information on such an archive, would directly impact instructables.com subscriptions, because with the online subscription, what you're really paying for is all the ONLINE aspects of timeliness, community, feedback, etc., none of which would apply to an offline archive. Anyway... Like I said, It's just something my mind keeps coming back to, and I wondered if anyone else thought along these same lines? -ZacWolf

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


Off-line Instructables Editor

Often, projects do not happen at our computer desk, or even somewhere with internet. Maybe you want to work on your Instructable on an airplane ride. Maybe you only have access to the internet at the library. Either way, it would be nice to have an official Instructables user interface that is available for download. You could completely flesh out your Instructable on your own time, without access to the internet, and then just upload the whole thing all at once. The steps, keywords, images, and instructions would all auto-fill into an online version and you'd be set! Woo! I understand this would take some work, but I'm just throwing it out there. Something preliminary could even just be a rudimentary template that you work within and then the site can read the template and grab everything it needs off your computer. Your thoughts?

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


$100 off Glowforge

Glowforge is giving Instructables members $100 off their new line of 3D laser printers! Pick one up today by following the link below to access the discount! Offer valid through October 28th and will be automatically applied when you click the link. GLOWFORGE DISCOUNT

Topic by Carleyy 3 years ago  |  last reply 3 years ago


why @echo off AND echo??? Answered

If @echo off makes it so CMD doesn't display the command, whats the point if you put "echo" on another line??? And does @echo off effect all the lines unless the have echo on them??

Question by B.F.L.M 10 years ago  |  last reply 10 years ago


Switch buying confusion. What is the difference between On - Off - On and (On) - Off - On? Answered

I am having some trouble buying switches from mouser. I need a toggle SPDT switch that has an On - On (on a different line) type workings (like seen here under SPDT). The problem is Mouser has so many different options in their "switch function" filter. Which one(s) should I use? What do the Parentheses mean? Does it mean Momentary or Something else? What about the "None" seen in a few options? What's up with "MOM"? Here is a link to the page I'm talking about.

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


Supplying power to the PIC12F508 through a transistor.

I'm trying to supply power to a PIC12F508 via a transistor, so it can turn itself off once it has finished working to save power. The Idea is for the push button to supply power to the chip, which sets GPIO5 high on power up, so turns on the transistor, allowing power to continue flowing to the chip after the button is released. The PIC turns on correctly when the button is pressed, but will not remain on, despite power being supplied to the transistor from GPIO5. Another possible issue is that while the chip works properly, it continues to put a high on GPIO4, lighting the LED while VSS is disconnected. I have checked that the code functions correctly, and have tested this without the additional lines from the programmer. Any suggestions would be appreciated.

Topic by The Skinnerz 8 years ago  |  last reply 8 years ago


How do I make a wireless on/off switch?

Hello guys I'm a beginner so go easy with me :D I want to make a simple wireless on/off switch. I press button A, the power is off. I press B, the power is on. I don't care what method as long as it is NOT line of sight.  Please direct me to a website with a simple circuit of the likes of that. Thanks,

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


My line rider videos.

Well i felt like showing off my line rider videos. This was my first one. Second one. Third one and maybe my best. My latest one made like 30 minutes ago.I just felt like showing them off and if anybody else has any put them here.

Topic by Easy Button 11 years ago  |  last reply 10 years ago


off hook signal detector for land line phones.Does this exist?

 My grandfather leaves his cordless phone off the hook all the time. Since it is a multi phone cordless system it is frustrating to find it or go there and take care of it?  I would like to build a unit that will detect the sound/signal from the phone company to alert you that a phone is off the hook, and have it cycle the power on the base to reset the connection to the handsets.  Any ideas?

Question by justmefjs2 7 years ago  |  last reply 7 years ago


Zip Line Claw Help

I am attempting to make a claw/clamp like device that could hold an object and then ride along a zip line. I have most of the details figured out but I am stuck on what I could use for the claw. It would have to be able to hold about 10 lbs and then have a pin release. I would prefer off an off the shelf item but could do minor modifications. Any ideas? Thanks

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


Remote water tank pump shut off

The community has a water tank on the top of the hill and a pump about 1/4 mile away, nearly line of site. There is a float in the tank that used to send a signal down a wire to shut down the pump when the tank was full but the wire has since corroded and is no more. They do not want to run another cable. We are thinking that a solar powered radio transmitter at the tank could operate a shut down receiver at the pump. (The pump has AC power but there is no power at the tank.) Anyone have any ideas how to make this work?

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


Image annotations running off of image, not displaying

Image annotations are being lost either by being below or beyond the edge if the image they relate to. This has only happened since the new image display system was implemented. The old image system allowed annotations to run below and of the side of an image, where as the new one crops the text to fit only over the image. The old image annotation system also wrapped the text after a number of characters, where as the new system allows text to run on indefinably  Users can manually insert line breaks in the annotations with the new system (not possible with the old system), however for old instructables this introduces the problem of annotations running off the image and being unreadable. This appears to be on every instructable, providing there are annotations on the images, and the annotations are long enough, or positioned such that they run past the edge, or bottom of the image. An example of this is: https://www.instructables.com/id/Cat-enclosure-with-high-cat-walktunnel-utilizes-/ On this instructable there are examples of both running of the edge of an image, and falling off the bottom. It also shows an exception to the problem, the first image allows the annotation to go beyond the boundary of the image, but all subsequent images have the issue.

Topic by RandomIdeaMan 6 years ago  |  last reply 4 years ago


How to install an LED on/off Indicator to Monitor 24v AC line?

I want an LED indicator that will lite when an AC circuit is on. The line/output is 24vAC at .5A. This is an irrigation controller, which sends 24vAC to activate a water/sprinkler controller valve.   I need a basic cicuit design and/or instructions. Googling led me to the 3 pages below, but I am not sure what to do. Any advice appreciated.  Thank you. http://www.boat-project.com/electro/panellight.htm http://www.discovercircuits.com/DJ-Circuits/aclinepilotled1.htm http://www.electro-tech-online.com/datasheets-manuals-parts/41821-1n4004.html

Topic by 222fbj 8 years ago  |  last reply 11 months ago


What line or lines control the back light of this LCD? Answered

I have this radio/alarm clock/cd player with a really bright lcd screen even when it is off. In a previous question I asked how difficult it would be to disable the backlight without disabling the rest of the screen. They said it would not be difficult and to upload picks of the lcd screen with the radio disassembled. Well here it is.I have posted pictures of the front and back if you need anymore information or more pictures let me know.

Question by Shadow13! 7 years ago  |  last reply 7 years ago


ASAP!!! Converting an 120v AC charger to run off 12v? Answered

Basically, I have a camera battery charger that runs off of 120v AC. On the charger it says it outputs 8.4v at .43 amps. I have a solar panel that does 12v at 300ma (or 6v at >1A). Could I take the charger, and wire it into the solar panel? I know the output of the panel at 12v is less than the charger, but it might be able to charge. Has anybody done anything along the lines of this? I would be really happy if I could charge my camera batteries from the sun, as I am going on a trip soon, and they don't have a great power system :) The batteries are LI-Ion, so they DO need a charger...

Question by astroboy907 7 years ago  |  last reply 7 years ago


How'd I get permanent marker off polycarbonate? Answered

I was using permanent marker to mark the fold lines for my front panel on my cnc machine. It comes off easily with methylated spirits on an earbud, but not after heat has been applied during the folding process. I've tried acetone, 2K thinners, spirits, rubbing alcohol and even PlastiX (used for renewing the yellowing on old headlight lenses) with no success. The irking factor is high and needless to say black duct tape on the back just wont do it for me. Any other ideas?

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


Long Range Off the Grid WiFi Repeater

Hello Everyone,  I've got quite the project that I am undertaking and I am looking for a bit of advice. This will be my very 1st forray into long-distance wifi, as well as off-grid power resources, so Im biting off quite a bit at once! I have a friend who has been helping me with the research who has a much firmer understanding of both electricity and hardware, but he will be out of town for the next week and I would like to get a bit of progress on this while he is gone. SO, I shall consult the hive mind known as the internet. Alright, this project consists of creating an uplink between a remote shed, and a home in a nearby city, with a broadband connection. The rub, there is 10,000 ft mountain range in between the two. We have a site were we can put a repeater node at approx. 10,000 ft elevation, that has wonderful line-of-sight to both locations. However, this site is very remote, and will have to run off the grid obviously. The distances are as follows: Home to repeater: 3.96 miles (thats with Google Earth following the contours of the          mountain/valley, not sure how to make it just do a straight angled shot, so thats a rough estimate) Repeater to Remote shed: 2.68 miles (same issue) Background environment info: shed has generator + 60w solar array with 3-4 deep discharge lead RV batteries at 7400 feet. Has spring fed running water, which could be utilized for power as well, as obviously its always running. Repeater location is at 10k, as stated. Moderate to high winds very likely (data from peaks of similar altitude in the general area show gusts ranging from 40-60 mp/h, temperature ranges of  averaging 7 to 90+ for a the later part of July and August (F). Obviously, its very possible to get soemething below this, though the lowest Ive ever seen at the shed has been -15 (f), I would say most winters we could get a few nights that see temps below 0, but not often. Equipment Ideas: So to pull this off, we have come up with two ideas for the network equipment, which I shall discuss 1st, then I will show you what we have come up with for power.  - Network    - Repeater Node: rb433 wireless access point ($99.00) http://www.routerboard.com/pricelist.php?showProduct=43         with 2 r52h mini PCI wifi chips ($59.00 x2) http://www.routerboard.com/pricelist.php?showProduct=69         2 8-18 inch satelite dishs converted for long-range WIFI use (20.00 x2) http://www.engadget.com/2005/11/15/how-to-build-a-wifi-biquad-dish-antenna/ OR instead of a rb433, we could use 2 WRT54G Linksys routers like this. (I also have 2 BEF 801.11b routers that are legacy to the WRT54G. I would like to use this if possible! http://hackaday.com/2005/08/23/how-to-greyhat-wifi-repeater/ Now, I know that this later choice would increase power use by about double. From what I have been able to find, the WRT's would at anywhere from 4.2w to 8w of power. Anyways, I like this later choice because it would be significantly cheaper for the equipment, but do you have any other ideas? I know that the RB433 would work great, but its rather expensive all said and done after I throw up the power as well. Plus, if it takes a lighting strike, its out of commission, and 2 cheap linksys routers are much cheaper to replace! Anyways any input here would be great! - Power  so power to the repeater node is the real challenge. We crunched the numbers and came up with something almost exactly the same as below: From the datasheets, a routerboard will draw between 6-10W. So design for 10W. Over 24 hours you will need 10Wx24h = 240 Watt.Hours of power. For 7 days, you need 7x240Wh = 1680 Watt.Hours. A single, large deep cycle 110Ah 12V battery gives you about 1320 Watt.Hours of power, almost meeting the requirement. Now, to look at the solar panels: A good rule of thumb is to install 6 times the wattage that is drawn by the device. This is because only about 8 hours a day in sunny weather gives you maximum power output from a solar panel. So the other 16 hours you need to draw from the battery. (So already you need 3 times the wattage drawn by the device to break even each day) To generate 1 full day of extra battery power per sunny day, you need another 3 times the wattage. This is how we arrive at 6 times. 6 x 10W = 60W. So at a minimum I would recommend 60W of solar panels. That qoute comes from http://diywifilink.wordpress.com/ and http://mybroadband.co.za/vb/showthread.php?179547-Advice-needed-Setting-up-wifi-repeater-11km which is a project from a guy in South Africa almost exactly the same as the one that we are working on. The numbers came out to be about the same (Though they were a bit different when we calculated for the WRT54G option.) so, 60w of power generation to keep a decent charge on a battery. Now, we have a 60w panel at the shed, which is rather large to take up to 10,000 ft and place on the side of a mountain, and given the consistent wind element up there, we are hoping to do a hybrid system of both solar and wind. This is where things get tricky. A perfect balance, or even a more wind heavy balance would be great, such as 30-40w wind 20-30w solar. That keeps the panel size down, and uses a power source that runs 24/7. A Faroun Savonius wind turbine seems like the best system, but the controller to prevent overcharging etc is where I get nice and lost, having breached into very unknown territory. https://www.instructables.com/id/Faroun-Savonius-Wind-Turbine/ http://www.fieldlines.com/board/index.php/topic,129060.html This looked at 1st like a good, cheap system to use a controller board for the wind, but my question is would the controller board that comes with these solar panels (see below) work for both. That below is the setup that we use more or less at the shed, with some mods, such as a better alternator. http://www.costco.com/Browse/Product.aspx?Prodid=11298029&search;=solar&Mo;=5&cm;_re=1_en-_-Top_Left_Nav-_-Top_search⟨=en-US&Nr;=P_CatalogName:BC&Sp;=S&N;=4001192&whse;=BC&Dx;=mode+matchallpartial&Ntk;=Text_Search&Dr;=P_CatalogName:BC&Ne;=4000000&D;=solar&Ntt;=solar&No;=3&Ntx;=mode+matchallpartial&s;=1&topnav;=&Nty;=1&s;=1 So, can a small, 30-50w wind turbine and generator be built, with a small solar array to power this thing? I dont care if we have some down time, this is primarily going to be used as a system to get a weather station with web cam to send in hourly photos during the peak hours. I can have the system at the shed shutdown automatically  using some cron jobs in linux during the evening to conserve power. When there are people at the shed, we would like to be able to get a good enough wifi connection to use a wifi device (such as an android phone or ipod) to use as a voip phone in essential communication. The teenagers aren't going to be chatting with their friends for hours, but we would like to be able to put a short call through in case something goes wrong, or we just need to get ahold of someone at the shed or in the city. Next the equipment at the shed should be comparable to the repeater node,  sans 1 antenna and just some low power embedded system. We would like to get a webcam and weather station hooked up on this end, but that can wait for upgrades later if needed, if power doesnt allow it. like I said, a simple water turbine could be used (something similar to the wind turbine perhaps?) and even another wind turbine could be built to add extra power dedicated to running any system at the shed, though I dont think the wind is quite regular enough to be viable here, but if its cheap, we could throw it on anyways. equipment at the home in the city is simple, just use an extra laptop or desktop we have laying around to be server/router, hook up antenna to this, broadcast connection, run the weatherstation/webcam web server off of this. So, thats the plan, but load of input is needed to try to come up with this. We hope to try to keep this sub $1000.00, but the budget could go higher. This is DIY at its finest! Thanks in advance for you help!

Topic by kydan 9 years ago  |  last reply 8 years ago


Building a 5V or 12V powered in-line preamplifier

I want to build an in-line pre-amplifier with a 3.5mm in and out jack.  What I want, or at least think I want, is a simple booster that provides a small, but relatively even gain boost from an MP3 player into the main amplifier. Something along the lines of this: https://www.instructables.com/id/In-line-headphone-amplifier/ However, I would like to be able to power it off of 5V USB or off of the 12V coming into the cigar lighter. What I'm effectively trying to do is get enough gain on low volume spoken-word audio coming out of my mp3 player so that I don't have to crank the stereo up to max.  Does anyone have any good sources for instructions or advice for this sort of thing? Alternatively, someone can tell me if this is a fools errand to begin with, and that I aught to be taking a different approach altogether.

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


No PDF opening or download from Email Download Instructables "Off Line/ Down" message

      For several weeks Instructables in the email won't open PDF or down load. So far the web site still works. Now it is also displaying a message "Off Line/Down" intermittently. Is Instructables down/crashed? Are the messages real or have you been hacked?

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


UK hacked car takes speed record off Americans.

Just over a year ago, the BBC had a coffee-powered car built, along the lines of this popular instructable. Now, that same car has been used to set a new speed record for a gasification-powered car, previously set at 47mph by Beaver Energy, using a car run on gasified wood-chips. With his car running coffee grounds, engineer Martin Bacon and his team from County Durham. pushed the record up to 65mph, an official Guinness Record, although it falls short of the team's goal of 80mph. The BBC article is here, but if you're outside the UK, and can't watch the video, the same video is below, but lacks the voices.

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


Getting printed lines on paper(8.5x11) that go to the edge? Answered

Well i have been making paper craft recently and i need a lot of small rectangles and i fold then cut them but sometimes the cut is off and it is no good i could get a table scissor thingy that can cut a lot at the same time but my parents think i would chop my finger off with it... Instead of folding and cutting it there a way i can print out preset lines?

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


"HC Off-Line Occured" while Interface Sysmex Xp100 machine using serial cable

We are Interface Sysmex XP100 Hematology machine, but we got "HC Off-Line Occured" error. We are using Serial Port 9-pin female pins (2-->3, 3-->2, 5-->5) Our Code To Open Serial Port: SerialPort comport = new SerialPort(); comport.BaudRate = int.Parse(cmbBaudRate.Text); comport.DataBits = int.Parse(cmbDataBits.Text); comport.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBits.Text); comport.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text); comport.PortName = cmbPortName.Text; comport.Open(); Port successfully open, but when XP100 machine send output, it shows "HC Off-Line Occured" error. Please provide possible solution.

Topic by vishal2 1 year ago  |  last reply 1 year ago


can someone help me make an LED Light line

Hi guys, im doing  ahistory project and im trying to make it so that i can have a line of LED's that will make LED 1 turn on, and as LED 2 turns on LED 1 turns off, LED 3 turns on LED 2 turns off, and so on and so forth, and activated by a switch? Can someone Help me?

Topic by Demont 8 years ago  |  last reply 8 years ago


how do you wire led's in a line circut with one on off switch. very new to this.?

I want to make a sign for a play that can be turned off for other scenes. I want to wire led's together in one circuit with one power source. (how much power and what type would I need?)

Question by bluefly1215 10 years ago  |  last reply 10 years ago


Annotation/Note boxes never line up where they are supposed to.

Annotation box may not be the right word, because I've never done an Instructable, but I am talking about the "Note" boxes that you hover over to see the author's note on his project images. They rarely line up with what they are supposed to, no matter what Instructable I view. So I don't think it's the author's fault (Sometimes they are even way out of whack, like on the wrong side of an image), I think it's a bug.For example, scroll down to the image of the pear painted on the glass on this page, and notice where the note is. Several of his images are that way, some are worse off than others:https://www.instructables.com/id/Layered_glass_art/?InstructImages

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


Traveling horizontal lines on a projector display?

I hooked up this projector at work (it's a BenQ) and when I view the projected image (in this case a computer screen) I see horizontal lines traveling up the picture. This projector is the only thing on the circuit right now.  I had to branch off the existing electrical line to add a new plug on the ceiling.  When I plug the projector into the existing outlets I get no lines, when I plug it into the outlet I installed I get lines.  The existing outlets on the circuit are all isolated grounds.  I have tried wiring in a regular outlet and then switched it to an isolated ground when the lines appeared, thinking it could be a ground issue.  I know my wiring is correct as I've installed these projectors before. What could it be?

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


Can I run different voltage LEDs off a 9V battery?

I have a small project that uses a 3 light LED list that runs off of 3 AAA (4.5V) batteries, but I also want to power a 12V LED string (for cars about 24" long) and I am uncertain the mA draw for either. This is for a follow-up to fine tune my son's 2014 Halloween costume. I run the 12V string off of 10 LR-44 batteries and get about 3 hours use out of these, so I know the mAh draw is relatively small. I'd like to extend the use of the 24" string. The 3 LED light goes for days on the AAA's.  Because both lights are used for the same application, I wanted to see if I could join them together in a single power source and power off of 1-9V or 2-9V (in serial for a total of 18V) batteries. I think my preference would be the 18V with an in-line resistor, but I do not know which resistor to use. Is this the correct approach? What are other alternatives?

Question by BillJ1 4 years ago  |  last reply 3 years ago


Automatic transmission "lever" broke off ('03 Ford Explorer).. Help?

Okay, so here's the rundown. I drive an old '03 Ford Explorer. Seeing as I'm 16 and yet live in the humble abode of my parents, I get the chance to share a driveway (and oh what an experience!). One day, I park behind my mother's vehicle, and she needed to get out. I was out with a friend at the time, so she decides to attempt to move it herself -- without the keys. She attempts to jam the car into neutral to roll it out, and lo and behold, the lever for the transmission breaks! I'm in absence of the ability to tow, nor have I had time to call a local mechanic for an estimate. Albeit it's an older car, but I'd love to have it repaired. The lever itself is hanging from a couple cords, and I do have a spare wheel that I can have installed, so I decided to come here with my question. Does anybody have a clue on what I should do, and if possible, a bottom-line price that they could shoot over? Anything will help.. Thanks! (Images will be added VERY soon.)

Question by icemith3 5 years ago  |  last reply 5 years ago


I want to run my well pump completely off solar panels

The well pump is currently hocked to a designated 15 amp 220 breaker in my main panel the pump specs mention that the maximum amps required  is 59. I wanted to run solar power to a dedicated panel box with breakers etc the line for the  pump would be 15 amp 220 as it is now WHAT SIZE SOLAR PANELS WOULD BE REQUIRED plus what other materials are necessary??? Thank You

Question by solarbat 8 years ago  |  last reply 4 years ago


is it possible to make a paper engine that runs off of hydrogen if it really sturdy and cylinder is lined with tin foil.

Ok so i have this edea to make a small two stroke engine out of paper and run it off of hydrogen witch i will make with a large battery and water like a fuel cell. But anyways ive allready built the piston and teh crankshaft and the encasing well most of it but i wanted to get some opinions on it can anyone help me? i should put on here that its not just a single sheet of paper thick um each component is 10 sheets of paper glued and compressed over 24 hours but also im thinking that if i lined the cylinder with tin foil it would stop the paper from burning and also the explosion will be very very micro sized probably 2x times smaller than a fire cracker and the compression will not be much of a problem because it works more off of the just the force of the pop. Ok so um the paper is yes just ordinary printer paper you can get at walmart for $2.50 but i cut out the shape i am making about 10 to 12 times sometimes 15 even and glue them all then stick it under a couple boxes of clay i have that are about oh well idk but allot of wheight and when its done each peace is about 1/6 of and inch thick so basicly about the thickness of chipboard.

Question by mrn 9 years ago  |  last reply 9 years ago


i want to start and stop my line follower robot robot by blutooth

Please help me , i have no idea how to change it. i have line follower robot , and i want to operate my robot by blutooth , i want start and stop my line follower robot by blutooh ,my line follower robot code is //code is int rightmotor1=12; int leftmotor1=13; int rightmotor2=9; int leftmotor2=8; int sensorleft=5; int sensorcenter=6; int sensorright=7; int l1=1; int l2=1; int l3=1; int f1=0; int f2=0; int f3=0; ////////////////////////////////////// void setup() { pinMode(rightmotor1,OUTPUT); pinMode(leftmotor1,OUTPUT); pinMode(rightmotor2,OUTPUT); pinMode(leftmotor2,OUTPUT); pinMode(sensorleft,INPUT); pinMode(sensorcenter,INPUT); pinMode(sensorright,INPUT); } /////////////////////////////////////////////////// void loop() { l1=digitalRead(sensorleft); l2=digitalRead(sensorcenter); l3=digitalRead(sensorright); ///////////////////////////////////////////////////////////////////// if(l1==1&&l2;==1&&l3;==1)   //feedback when comes all sensor on white { l1=f1; l2=f2; l3=f3; } //////////////////////////////////////////////////////////////////////////// if(l1==0&&l2;==1&&l3;==1||l1==0&&l2;==0&&l3;==1)   //left turn {   digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,0);   digitalWrite(leftmotor2,0); } else if(l1==1&&l2;==1&&l3;==0||l1==1&&l2;==0&&l3;==0)  //right turn {   digitalWrite(rightmotor1,0);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0); } else if(l1==1&&l2;==0&&l3;==1)  //go forward straight {   digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0); } else if(l1==0&&l2;==0&&l3;==0) //stop {   digitalWrite(rightmotor1,0);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,0);   digitalWrite(leftmotor2,0);   delay(2000);    digitalWrite(rightmotor1,1);   digitalWrite(rightmotor2,0);   digitalWrite(leftmotor1,1);   digitalWrite(leftmotor2,0);   } /////////////////////////////////////////////////////////////////// f1=l1; f2=l2; f3=l3;        //memory variables //////////////////////////////////////////////////////////////////// } , i want to keep all code in function and want to call in blutoooh code i want my robot start and stop by blutooth please help me my blutooth code is #include SoftwareSerial mySerial(10, 11); // RX, TX String state;// string to store incoming message from bluetooth int  LED = 5; // LED on pin 13 void setup() { mySerial.begin(9600); Serial.begin(9600); // serial communication to check the data on serial monitor    pinMode(LED, OUTPUT); mySerial.println("Welcome to the wonderful world of bluetooth communication");   delay(1000);   mySerial.println("Sending a '1' will turn on the LED, Sending a '0' will turn off the LED");   delay(1000);   mySerial.println("a '3' will flash the LED and a '4' will kick out a lot of data from the LDR"); } //-----------------------------------------------------------------------//  void loop() {   while (mySerial.available()){  //Check if there is an available byte to read   delay(10); //Delay added to make thing stable   char c = mySerial.read(); //Conduct a serial read   state += c; //build the string- either "On" or "off"   }    if (state.length() > 0) {     Serial.println(state);   if(state == "turn on")   {     digitalWrite(5, HIGH);           }     else if(state == "turn off")   {     digitalWrite(5, LOW);      }      else if(state == "turn1 on")   {     digitalWrite(5, HIGH);           }     else if(state == "turn2 off")   {     digitalWrite(5, LOW);      }     state ="";}} //Reset the variable i am using arduino atmega2560 and blutooth hc 06 and using  l298n 3 sensor

Topic by ShaidK 3 years ago


coMBINING ARDUINO SKETCHES

Every thing is okay except line follow command ,,,when i say line follow it only goes forward but does not follow line my code is String voice; int LS=10; int RS=9; int LED=13; char getstr; int in1=3; int in2=4; int in3=5; int in4=6; int ENA=2; int ENB=7; long duration, distance; int trigPin=A0; int echoPin=A1; int buzzer=8; void forward() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,HIGH);   digitalWrite(in2,LOW);   digitalWrite(in3,LOW);   digitalWrite(in4,HIGH);   } void back() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,LOW);   digitalWrite(in2,HIGH);   digitalWrite(in3,HIGH);   digitalWrite(in4,LOW);   } void left() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,LOW);   digitalWrite(in2,HIGH);   digitalWrite(in3,LOW);   digitalWrite(in4,HIGH);   } void right() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,HIGH);   digitalWrite(in2,LOW);   digitalWrite(in3,HIGH);   digitalWrite(in4,LOW);   } void stop() {   digitalWrite(ENA,LOW);   digitalWrite(ENB,LOW);   } void on() {   digitalWrite(LED,HIGH); } void off() {   digitalWrite(LED,LOW); } void line(){ if(digitalRead(LS) && digitalRead(RS))     // Stop   { stop();   }     if(!(digitalRead(LS)) && digitalRead(RS))     // right   { right();   }     if(digitalRead(LS) && !(digitalRead(RS)))     // Turn left   { left();   }     if(!(digitalRead(LS)) && !(digitalRead(RS)))     // Forward   {     forward();   } } void setup() {   pinMode(LED, OUTPUT);   Serial.begin(9600); pinMode(LS, INPUT);   pinMode(RS, INPUT);   pinMode(in1,OUTPUT);   pinMode(in2,OUTPUT); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT);   pinMode(in3,OUTPUT);   pinMode(in4,OUTPUT);   pinMode(ENA,OUTPUT);   pinMode(ENB,OUTPUT); pinMode(buzzer, OUTPUT); } void loop() {   while (Serial.available()){ //Check if there is an available byte to read      delay(10); //Delay added to make thing stable     char c = Serial.read(); //Conduct a serial read     if (c == '#') {break;} //Exit the loop when the # is detected after the word     voice += c; //Shorthand for voice = voice + c   }   if (voice.length() > 0){     if(voice == "*go ahead"){       forward();       }     else if(voice == "*go back"){       back();       }     else if(voice == "*turn right") {       right();     }     else if(voice == "*turn left") {       left();     }     else if(voice == "*light on") {       on();     }     else if(voice == "*light off") {       off();     }         else if(voice == "*stop") {       stop();     } else if(voice == "*line follow") { line();           }       voice=""; //Reset the variable after initiating   } }

Topic by BibekP4 1 year ago  |  last reply 1 year ago


IR based robot?

What changes i can do in simple line follower robot? I made simple line follower robot now i want this robot works when i give IR signals  (ON) and stop when I give OFF  signals through IR remote. Instead of on off  switch on it.

Question by syedmBilal09 4 years ago  |  last reply 4 years ago


Home to get layers of old plastic contact paper off of sheet metal?

Hi! I bought this old sink at a salvage yard.  It has a sheet metal bottom with some drawers and cabinets. They are lined on the inside with this plastic contact paper that's been stuck on for 50 years. I have tried getting it off by applying extreme elbow grease and a metal paint scraper, after soaking the surfaces for a while in this stuff: http://www.wmbarr.com/product.aspx?catid=36&prodid;=155 ("Cirtistrip Low V.O.C. Adhesive Remover") but its still pretty much not coming off. Anyone have a better idea about how to get this stuff off? A greener, not-so-toxic method would be great... but I'm not sure if there is such a thing? (FWIW: The sheet metal is not bare, it has a white paint/enamel-type coating.  Which is pretty scratched up in places.  I intend to sand & repaint it, once I get the contact pager off.)

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


arduino coding question - if any of the 3 sensors are low, turn off led? Answered

Hello everyone. i have no background in programming. i am currently working on a plant health monitor. the monitor has 3 sensors, water - temperature - light. i can successfully read data from sensors and turn on/off leds depending on the values. what I just CAN'T figure out how to do yet is this; i want to be able to keep a green led lit as long as all the environmental conditions are good from the 3 analog sensors and turn the led off if either sensor is off.  is this clear enough? - let me know if you don't understand my question and here is my code so far... plant health monitor V1.0 by Akin Yildiz int sensor_temp = A0; int value_temp; int sensor_light = A1; int value_light; int sensor_water = A2; int value_water; void setup() { Serial.begin(9600); pinMode (11, OUTPUT); // temperature LED, red color pinMode (10, OUTPUT); // light LED, yellow color pinMode (9, OUTPUT); // water LED, blue color pinMode (6, OUTPUT); // this is the green LED i want to program } void loop() { value_temp = analogRead(sensor_temp); Serial.print("temperature"); Serial.println( value_temp ); value_light = analogRead(sensor_light); Serial.print("light"); Serial.println( value_light ); value_water = analogRead(sensor_water); Serial.print("water"); Serial.println( value_water ); delay(1000); if (value_temp < 400){   digitalWrite (11, HIGH); // plant too cold - red led on }else{   digitalWrite (11, LOW); // normal temp - red led off } if (value_light < 300) {   digitalWrite (10, HIGH); // not enough light - yellow led on }else{   digitalWrite (10, LOW); // enough light - yellow led off } if (value_water < 600) {   digitalWrite (9, HIGH); // plant thirsty - blue led on }else{   digitalWrite (9, LOW); // soil is moist - blue led off } WE HAVE TO ADD SOME LINES HERE FOR GREEN LED ON DIGITAL PIN 6. I need this LED to come on when all other LEDs are off and turn off when either of the other LEDs are on! } -- thank you for your time, i'm sure it is an easy line to add but again i'm amazed that I got this far, all learned from this webpage! akin,

Question by Akin Yildiz 4 years ago  |  last reply 4 years ago


Grandma got run over by a reindeer rip offs Put another log on the fire

Hi Everyone, Have you notice this song Grandma got run over by a reindeer https://www.youtube.com/watch?v=MgIwLeASnkw Is a rip off of this song  https://www.ouvirmusica.com.br/willie-nelson/put-another-log-on-the-fire/ I not trying to ruin Christmas just thought its hilarious, when my 8 year old was singing "grandma got run over by a reindeer" , I gave her some lines form "put another log on the fire" Now grandma is having a really bad Christmas!

Topic by liquidhandwash 1 year ago


using TSOP4838 in anti-collision line follower

i want to use IR sensors with emitter part ( IR led ) - calibrated with an IC timer to give 38KHZ IR signal - mounted side by side - not face to face like the counter module - to the receiver part ( TSOP4838 ) which will turn on once something reflect the IR signal back to the receiver. [ the default is that IR signals will go straight forever without being seen by the receiver ]. I've followed the steps of a circuit using IR sensor in an object counter module it included transistors to be triggered instantly as described http://i.stack.imgur.com/Qhoy8.jpg the problem is that it gives an instant pulse to trigger the 7-segment display. but in here i don't need it to be instant. how could i implement it to make the LED bright as long as i block the path [ not instantly ]. and to be off whenever there's no object in front of the robot

Question by superdz 3 years ago


How to de-lint clothes when drying on a line and not in a dryer? Answered

Obviously I could go over them with a lint roller but I was hoping someone would have a less tedious method. We have two furry cats and some clothes come off the clothesline clean and good-smelling but looking awful, cat-hair-wise.

Question by joescratch 10 years ago  |  last reply 9 years ago


Don't Panic! (I'm back-ish)

I'm going to be offline for a few days, going on holiday.After lunchtime today (it's 10am now), I'll be completely non-contact until at least Wednesday, then a maybe a bit of time here until the Wednesday after that.Don't expect reliable contact until the 21st.Be good.Somebody keep an eye on the squabblers for me.Off-site spamOff-site spamAnd don't forget to vote for my entries in The Book.EDIT:OK, I'm sort of back online, way up in the NW UK. I've just started browsing what I've missed - Eric's history of SquidLabs looks very interesting, and I seem to have won (another) t-shirt in the robot contest (Kitewife has claimed this one, though).Off to check The Book...

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



Simple wireless on/off switch, possibly using BTE/ANT+ or sth lower tech?

Hi all, I'd like to get your expert opinions on the following: I'm trying to build a simple device. In one circuit, a switch closes. This sends a signal wirelessly to a nearby circuit (~1m away), which receives the signal and turns on an LED. When the first circuit breaks, the LED turns off. Sounds simple. The circuit containing the switch has to be very small/lightweight, and power conservative. I'd like to have more than one of these switches around and by closing either switch the LED would turn on. But these switches must be paired with the LED, so that another separate LED nearby will not be turned on. This led me to think about using something like Bluetooth Low Energy or ANT+, because the modules are really small and can be powered by a button cell battery for months. I can't use IR because there's no direct line of sight. Are there any alternatives besides these two options? If I choose BTE, what do I need apart from the module to get the circuit working? I mean stuff like PC-module connection, battery connection or IC or other stuff like controllers? Thanks :)

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


Audio over rj11

I was wondering if I can have a audio input on a rj11 so I can run audio off my house's phone lines. We have VOIP now and don't use the phone lines, so can I still do that?

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


Batch. Reading multiple lines from a text file? Answered

I created a batch file, everytime it runs it saves a name and date to a log (log.txt). So everytime it gets more and more lines. I want to know how to read all the lines from File.txt (in another Batch file). my current script is: @echo off set /p txt= > File.txt set /p txt2= >> File.txt set /p txt3= >> File.txt set /p txt4= >> File.txt set /p txt5= >> File.txt 'and so on echo %txt% echo %txt1% echo %txt2% echo %txt3% echo %txt4% echo %txt5% Every time i run it, it says "did not expect >>" Please help

Question by animan1 8 years ago  |  last reply 8 years ago


Mini Bike Chain Adjustment Trouble? Answered

I recently bought a bunch of pocket bikes all in good shape but all had some sort of problem.  I took the best parts off of them and made one extremely nice bike.  The one problem I am having with it is that the chain likes to come off.  There is a bolt connected to the back axle that tights and loosens and slcks or tensions the chain.  How do I find the "butter zone" where it isn't too loose to come off, and it is too tight to come off?  The two sprockets are lined up really well, but they are a little off.  Would it be possible that that was the problem?  When I say a little I mean like so small its less then 2-3 mm from drive sprocket to driven sprocket.

Question by Electric Spectre1 9 years ago  |  last reply 4 years ago


3 way light switch push button, working at low voltage controlling line V light

I'm adding an additional light to a room with 2 entrances in an old house. Instead of using the common 120V 3-way SPDT switches to control the light fixture from 2 points, I'd like to use a relay (or something electronic) directly connected to the load of the light, and I'd like to run low voltage wires to push buttons located near the doors of the room. These will control the light by one press = on (if the light is already off), and the following press will = the alternate condition, the light going off. IOW, the push-button will toggle the on/off condition.  There should be a commercially available relay (some kind of latching relay, perhaps) product with the circuit. Can anybody recommend something? Or, perhaps I could put together the components myself. Does anybody have a schematic of something along these lines?

Topic by nehmo 1 year ago  |  last reply 1 year ago


12v battery charger? Answered

My WiFi ISP signals were unable to reach my room. So my ISP arranged a device  on top of apartment & it was powered with 12 volts DC adapter. But makes me to work offline when power is OFF. So i want to make that device to work on 12V battery. So i need to make a charger for that battery to work as UPS. Can any one help me with circuit Diagram and components list??

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


Help with On-Line Indicator for Jabra GN8530e headset

I have a Jabra GN9350e headset that I use at work, both with my desk phone and USB on my workstation. Jabra sells an on-line indicator (http://img5.jabra.com/sites/Jabra/GNImages/CCO/Documents/Datasheet_Jabra_Busylight_V02_1003_low_10116.pdf), but it's just a plastic stick that lights up at the top. No one will understand what it is, or what it means. I intend to build an LED box that says something to the effect of 'ON A CALL' with a chasing border to get attention and deliver the message that, well, I'm on a call. The tricky part for me is that I can not tell what type of connection is used to connect the device to the base station. I know it is a 2.5mm TRS connection, but am unsure if it is stereo or mono flavor. I am also unsure what the actual signal would be - is the sleeve is ground, tip signal, etc. I have spent a few hours searching the web and found nothing. My end goal would be to build a plastic box to house the indicator assembly, with mirrored plastic on the front so that when the indicator is off it would appear to just be a black box. When active, there would be a chasing light border (two or three LED sequence, just regular chasing lights), and a solid on field in the middle with verbage. I'm good with a soldering iron, but new to this kind of build. If someone could assist / recommend how to proceed in building the circuitry that could connect the LED's together (sure I can find that information on this site elsewhere) that would be nice, but primarily I would need help interfacing the indicator with the headset base station. Thanks!

Question by jon.hazlett 8 years ago


Infrared detector help? Answered

I have 2 infrared detectors (like the one in picture) with 3 pins and want to make a simple detector to turn power on and off. The reason is that I want to make a line following robot. I only need to be able to put enough power through it to power a relay on or a transistor. Please help I need to know what all of the pins do and how to use them. Or even better a curket dyagram that turns power on and off by infrared without using micro processors.

Question by David97 8 years ago  |  last reply 8 years ago


Bad DSL connection...! HELP.?

OK so I have SBC(now A&T;) as my ISP. how onnection has always been fine u untill about 3-4 months ago. I have done EVERYTHING. I called them mutlile times and got multiple answers. 1)Bad modem(we had it for seven years)           >I bought a new actiontec modem. it still goes out! 2)Bad filter          >took off the filter and plugged the phone into a diff line with a filter and the dsl directly          >to the jack 3)Bad line         >some of our hone jacks in the house are not wired right so they recieve no dialtone         >the jack the phone and dsl are plugged into has a tone. only thing is  the jack its in has two         >cat5 I cannot figure out there are for either. The phone company says the line to our house is ok and no one else in our area is having the same prob. They can send out a tech to check the line to our house(no charge) but if he goes in the house and finds a problem(even if he doesnt fix it) we will be charged for the labor. I have googled this for hours and called tons of ppl. I dont ned an answer how to fix it(i would like one) but i really want to know what is causing it.

Question by miiwii3 8 years ago