Pyrolixer - can you help me figure out what it is?

I need to figure out the actual name of something I bought years ago under the name of "Pyrolixer" for pyro-effects (in Germany). I am also curious as to whether you could diy it.Let me describe what this is about: a liquid that you apply to paper and let dry. When you set fire to that area, it will smolder away, but only where you applied the liquid. From what I gather, it is used for magic tricks and similar effects. In addition to have paper smolder slowly, you can use it to reveal a message by letting it burn away specific areas.Can anyone help me out? "Pyrolixer" does not appear to be a good search term, and thus probably now the English/original/technical name for this. Any feedback is appreciated, and ideas about how to make your own even more so!Thank you!

Posted by Dominic Bender 1 day ago

How to wire a 3 terminal socket ( i believe they are called 2 way sockets

I would like to put led mini lights inside of a liquor bottle lamp that i bought, my question is how can I connect this to a 3 terminal socket so i would be able to turn on just the mini light, or just the lamp bulb or both at the same time.

Posted by jeffsdad 2 days ago

Search problem.

I wrote an Instructable on how to use the Verowire technique to make circuit boards. Rather oddly a search for "Verowire" does not find it. It finds other things which do not have "Verowire" in the title, but not the article that does. So perhaps I didn't need to bother writing the article, perhaps my search to see if it had already been written wasn't as conclusive as I thought.

Posted by andypugh 2 days ago

I made it post keeps disappearing?

Hi all,I just added an I made it! post to an Instructable I followed. After I added it, it appeared on the site, but when I refreshed it disappeared. I tried again and the same thing happened. Do I need to use a different browser or is there some kind of hold? Thanks!

Posted by lollicopter 3 days ago

I'm having trouble with my sketch regarding how to code , my stepper motor traveling to a limit switch then reversing and accelerating to another limit switch.

I'm having trouble coding at a point, I built an Equatorial Platform for my telescope so I can track the stars.I have a Nema 23 stepper( 1.8 * step, 200 steps per rev.) motor with an Arduino and a Easy Driver for my micro controller. My problem when I make my sketch I have the stepper motor running at 92- 104 RPM with a potentiometer to fine adjust, at this point when my platform hits a limit switch then I want to reverse the motor and accelerate it to 2000 RPM then decelerate to 25 RPM before the platform hits an other limit switch, then start the process over.How do I incorporate accelerating coding that to a certain point then decelerate motor before it hits the other limit switch. Do I need to find some timing coding ( for some length of time), before I want the motor to decelerate to hit the second switch. I don't want the motor running at 2000PM to hit the limit switch, I want it to decelerate before the limit switch. then reverse the motor again to 92 - 104 RPM. I'm a novice at coding with little electrical background. Your assistance is greatly appreciated. Jack Brockhurst e-mail

Posted by jacam9803 4 days ago

New comments/questions/tips

... are much improved. I like the fact they're all rolled into one list, that I can now respond to tips, and select best answers for questions, and upvote anything I so choose. Great improvements from an authorial standpoint, thanks!

Posted by makendo 4 days ago

Foam Board/Cardboard Shoes

Hey, I was walking past my little sister watching PBS Kids and on one of the shows this girl was trying to make her own shoes. Out of cardboard. Lightbulb. The only reason that they didn't work is because they got waterlogged. I am thinking that with good enough sealing and strong enough glue, useable shoes made from cardboard are a possibility!The only problem is that I don't have foamboard or time to spare or a working camera at the moment. If anyone could carry this idea further than me, have at it!

Posted by Thorondor95 4 days ago

New ideas for Tiny Whooping?

Guten Tag! I have a Tiny Whoop sitting around just begging to be modified in some way. I need some new ideas. Anything I successfully pull off will be published as an Instructable, so it'll come right back at you!

Posted by Thorondor95 6 days ago

Hi, I'm a student and I'm looking for an experienced partner for help with my project :)

Hi, my name's Chaitra and i'm a 17 year old product design student in the UK, doing A level product design.As part of our coursework, we are required to find and interact with an "expert", a person with a good level of understanding of product development and technology.As you might expect, it's quite hard to find someone like this at random, which i why I've come here to see if anyone is willing to collaborate with me :)My coursework will be based on air conditioning, specifically regulating and purifying air conditions during sleep, so it will involve a good amount of electronics and physical design. As the "expert" of my project, we might exchange ideas and offer suggestions to improve the project, and even maybe advice on the best ways to manufacture the final prototype for assessment. You can be as involved as you want to be honest, I appreciate that everyone is busy so you won't be able to commit a huge amount of time to this, but maybe exchanging emails around once a month? I might send over some sketches / cad files over email for you to evaluate and suggest some improvements or ideas on, nothing more than that.If you're willing to help, please answer this topic so we can work something out! Thanks a lot :)PS. this is my first time using instructables, if I've submitted in this wrong place or something, please let me know

Posted by chaitrakawathekar26 6 days ago

15W laser

Help help help! Ive just fitted a 15w laser to my cnc 3018 and I cant get the laser to switch to low power mode. It just wants to burn everything! How do I fix it? Ive attached two pictures, one of the laser and one of the board. The board is a woodpecker GRBLO 9. Please if anyone can help me I would be eternally great full.

Posted by MattK171 8 days ago

3D Printer use

I was wondering if anyone would do some printing for me. I don't have the item designed yet and wasn't really wanting to buy a 3D printer just for one idea so I would need some help designing it and what format it needs to be in.

Posted by wsround 8 days ago

Site takes me to malware

I was interested in going to the site on the off grid solar panel that I recently got an email about. The reference take you to a malware site

Posted by richardnml 11 days ago

Pro membership for exchange of donations for a friend fighting cancer

I'm organizing a gofundme campaign on behalf of a friend, mother of three young kids, fighting advanced stage cervical cancer . And I have many pro memberships to exchange for donations. For a $5 donation, I will give you a 3-month pro membership, $10 donation a 6-month pro membership, and $20 donation a 1-year pro membership. I thank you a million times for your kind help!

Posted by babybayrs 11 days ago


I've bought 3 ebikes one a Raleigh select,p/assist, one a throttle type, but wires on 1of the other bikes I've bought,the wires that lead into hubmotor are cut they don't seem to connect via a hole in wheel axle/spindle,so need help please,also the p/assist Raleigh can it be converted to throttle powered, as its a very old ebike with a sanyo hubmotor? Thanks...

Posted by AlanW131 11 days ago

Arduino color sensor 34725

I was using color sensor 34725 with arduino to detect colors but it seems it is working a bit strange i have uploaded the picture of the data i gather from my experiment here are the confusing things1.why green value is also high when i place sensor on blue paper?2.why green and red color are significantly more in yellow as compared when they are place on their own color.and so on, i mean the color sensor does not seem to work properly

Posted by DabuHackker 12 days ago

Can't access new mails in inbox or reply to messages

My inbox shows new messages but I can't access them and they do not show in my message list. I tried to reply to an old message as a test and could not do that either. I tried both IE and Chrome. any suggestions?

Posted by Mr. E 13 days ago

Pov display with arduino

I was making pov display with 10 leds using arduinobut it seems it is not working as it shouldhere is the code would appreciate an kind of help

Posted by DabuHackker 17 days ago

Launch Stats Not Working

11 days ago I reported that the Launch Stats on my members page was not working ... it was working but suddenly stopped. Others have the same problem too but to date there has been no response from those who manage the website.Reposting as perhaps my first post has been missed?

Posted by lingib 18 days ago

What's your DREAM workshop

Hello everyone!I am looking to create a local makerspace in my town and I want to know what you guys would like in your DREAM workshop. Anything you can imagine no matter how big or small. Post anything you can think of. If it's something that can be built fairly easily too, even better.

Posted by TheCroug 19 days ago

I need help connecting 2 solar panels in paralel

Hi,I'm new to Electronics but I love solar panels and hiking.S, I bought 2 of these: one of this: I connected them. I cut 2 USB Cables, connected + with + and - with - from each Cable and connected it to the DC-DC booster. The amperage is not doubled and the output Volts are lower than 5V which should be the constant output of the booster. The panels were solar oriented and the output was only 0.02 A with Bright enough sun from those 2 solar panels. The panels separately work fine, it is only when I connect them to the booster that they act weird.Is the problem in booster or is it me doing something wrong?Thank you!

Posted by IonR3 21 days ago

IOS App not working any more

Instructables team when you will be upgrading iOS app for iOS11?

Posted by nitingautam 22 days ago

An awesome website I found for sharing the tools you use in your Instructables (or for anything else!)

I recently found a free website called, and as the name implies, it's a website for making kits of the stuff you like and useSo far, I've made a bunch of different kits such as " Dremels & Rotary Tools: All of The Accessories You Need" " My MUST Have Workshop Tools I WISH I Would've Bought Earlier!" (And several others that are organized on my Kit profile page)I think it's a pretty cool website, and encourage everyone to make their own kits of the tools and stuff they use in their projects! If you make your own kits, link them to your Instructables profile page (Like I did with Linktree), and post a comment below so can all see what you use and waste more money on tools we're sure we need! :)They also have an option for embedding the kit in a website which looks really nice (see this, though when I tried it once it looked a bit different), but unfortunately Instructables doesn't support it... (hint-hint!)You can also create an affiliate code, so when people buy through the links, you earn a few percent of the sale, which is pretty cool too!Maybe unrelated, Kit was just acquired by Patreon so if you read this in the future it might not be free. I have no idea. Also, if you're an SEO genius you need to tell me how to make it so my kits rank on Google!Post a comment if you make one!

Posted by Yonatan24 23 days ago

The indestructable bike lock! ...Idea

The indestructable bike lock: the forum topic that was posted undeniably just to annoy the future patenters!So I had this weird idea for a product come out of nowhere. Y'know how aluminum is supposed to make cutting wheels on an angle grinder gum up, stick, and shatter - when trying to cut it, that is? I was wondering, what if a company engineered a special type of aluminum alloy or a similar material that would do just that: gum up abrasive cutting wheels and make them stick/bind and shatter. Then like with layers of plywood, it would be sandwiched together with hardened steel, in the shape of a U-lock bike lock, making it: Impossible to cut through with a hacksaw, reciprocating saw, TCT bladed portaband , because it's hardened and would wreck the teeth. Impossible to cut through with an angle grinder or rotary tool with an abrasive wheel because the aluminum would gum it up. Impossible to cut through it with bolt cutters - obviously... Impossible to freeze it with freezing gas? I don't know. I heard that's what thieves do. Maybe that aluminum alloy would be a super-insulator and wouldn't allow the hardened steel layer to freeze and become more brittle?I think it might just be invincible until the portable cordless battery powered waterjet is invented!Thoughts?

Posted by Yonatan24 23 days ago


Hi, I purchased a few dogwoods, pink and white ones, the tags fell down from the pot and now I don't know who is who. There is any way to identify which one is the white one and which one is the pink one? They are around 12"

Posted by Dalida1980 24 days ago

FoodSaver Quick Start V825/V845/Game Saver Sport Vacuum Sealer.

We have an FoodDSaver QuickStart V825/845 Game Saver Sport vacuum sealer that will suck the air out but will not seal. I was wondering if it could be the heating element gone bad???? Tell me how to check it and how to fix it. Thanks in advance. My email is;

Posted by DilmosJ 25 days ago

Dual timer switch

Is there a commercial dual timer switch that the first timer can be set for longer duration like hourly or half hourly and then switch on another timer that run in seconds. Or is there a DIY solution? Eg. Turning on a water sprayer every 2 hours for 10 seconds. I need a timer that run from the mains.

Posted by TanJ21 27 days ago

How to make a GIANT rotating tray (lady susan) for 3Dscanning people?

What materials do I need?Can I do this with a trucks's bearing ?what thing Should I use to make it rotate, strong enough to sustain a person?What Things do I have to take precaution on?

Posted by DIAGONALLIS 27 days ago

I want a special rc tank

Hi, We wanted to design circuit board. The Circuit board size 92mm x 42mm. This circuit board is for small RC Tank with two wheels which has two motors. This tank is for indoor usages. RC tank properties; a) Image transfer operation with 5g wifi and android hand terminal b)take picture recording c)2.4 g remote control (left, right, forward, backward) d)voice comunication single side e)Industrial tablet; android operating system support with remote control visual comminication. sample applications;,searchweb201603_1,ppcSwitch_5&algo_expid=6f402017-0dcb-44ff-aa1b-8ba773277605-6&algo_pvid=6f402017-0dcb-44ff-aa1b-8ba773277605&priceBeautifyAB=0

Posted by Alpaslankilickaya 4 weeks ago


I want to know how to make airsoft guns but i dont know where to start, i need help.

Posted by sam your 4 weeks ago

I just don't see some of the data.

I manage MySQL databases. And this was not difficult before. But now I tried many thoughts and ideas how to solve the complexity, but didn't correct the problem. I can't access the amount of data due to the complexity of the program. And I can't understand what to do about it.

Posted by TaylorHaynes 4 weeks ago

Compact ight sensor switch with low voltage

Hi there,I've got a led light that's operated via a magnet, if it doesn't detect a magnetic field it turns on if it does it turns off. It's a led light for car door(check picture for reference) and uses 3x AAA batteries in my case 1.2v x3 (3.6v), if you use regular batteries it's 4.5vBy mistake I've order a tiny light sensor module 3.3-5v(check picture) which obviously can't be used as a switch, not in it's present form. While I'm good with solder, I've build an ebike, I'm a computer guy but when it comes to things like this like this make me feel powerless :( ..I 've used 12v light sensor switches but that's a different topic.So, how can I have a low powered light sensor switch that's compact and can save me from replacing the batteries frequent? ...the led light turns on even at daytime which has no point in doing that. I'd appriciate any help :D

Posted by Takisk1 4 weeks ago

What's Inside an Instructables Prize Pack?

For a while, I wondered what was inside an Instructables prize pack. Now that I've gotten one, I decided to post the contents so that others know. An Instructables t-shirt (you can choose the size)A notebookA cardA tattooA pin2 stickers, one large and one small and roundAlso, a huge thank you to the Instructables team for organizing contests! YAY!

Posted by ProfessorPi 4 weeks ago

Building Touch Sensors from Scratch?

I am very familiar with velostat and conductive fabric and how to combine them to make textile touch sensors. I would now like to make a touch sensor that's more solid, and made from a firmer resistive substance than velostat. I've been looking up the resistivity/conductivity of different metals here: In theory, as long as one metal (or other material) is more conductive than the other, it should work the same? I've read on silicon and carbon fiber, but I'm not sure if what I'm researching is the solid kind, or the flimsy/squishy/bendy kind.

Posted by LeAnne_K 5 weeks ago

Does anyone Identify this IR Receiver Component?

I recently disassembled a stereo receiver (rx-4010r) and I found this ir receiver, and I would like to to control it with my arduino. Can anyone help me get the datasheet, or suggest what are the connections?Thanks, Ariel.

Posted by ArielE20 5 weeks ago

Gap measurement using a sensor

I want to measure a very tiny gap of about 20-30 microns(0.02-0.03 mm) using a sensor with the help of arduino and then display it using a 16x2 Digital LCD Display. Can someone help me out with the sensor that I will need for this purpose with exact name and its working.The gap that I want to measure is the gap between the the joints of a healing fractured bone.(the joint where the tissues develop to join the broken parts together.)Since this is a leg bone any person walking with such a fractured bone will put pressure on the bone and the gap present in the bone will reduce. So that is what I want to measure using a sensor and arduino. Since this gap will be too small (20-30 microns) I am unable to find a suitable sensor for the same.PS: Main issue I am facing is the measurement of gap using a sensor and arduino since I can find a suitable sensor for the same.Please find the attachments of the bone and the gap I want to measure.Also the thing I am doing is a close case of greenstick fracture. refer to the attachment of greenstick fracture.

Posted by ChinmayV2 5 weeks ago

Arduino-Based Solar Heater for My Above Ground Pool

A few weeks ago I grabbed the garden hose to top off the pool and noticed how hot the water was as it came out. (the hose had been lying in the sun). So, I decided to put it to good use. We've been looking at solar heaters for the pool but found the prices prohibitive, and being a DIY'er I decided to build my own. I have 50' of black, tangle-free hose coiled on a 2' by 4' piece of Wolmanized, 3/4" plywood. This is perched on top of an 8' 4by4 post which I sunk into the ground near the pool's filter. To feed the hose I installed a faucet in the filter's return line which is under sufficient pressure to travel up and into the hose. The other end comes down to an electric valve before emptying back into the pool. The Arduino portion of the project consists of an Arduino Uno board, a DS18B20 temperature sensor probe, a 12-volt, 3-amp power supply, A small prototype board that holds two 12-volt relays and two 2N3904 transistors which the Arduino triggers, two 12-volt car-type relays which are triggered by the smaller ones, and a Mallory Sonalert. My idea was to have the Arduino monitor the temperature in the return line from the solar hose coil, and when it reaches 80 degrees F, the Sonalert goes off for 5 seconds to warn swimmers that hot water will be coming out of the return spout in the pool. And after the warning sounds, the electric valve then opens for 2 minutes, flushing the warmed water into the pool. Since the system is driven by the pool's filter, the solar hose is replenished during this flush period, and when the valve closes, that new water is then heated, and the whole process starts over. The Arduino code consists of a couple libraries to incorporate and read the temp' probe's output, a subroutine which tests both the Sonalert and the valve when the system is first plugged in, and then the necessary code in the Void Loop section which simply waits for the temp' to reach a preset level and then sound the alert and then open the valve.The system is built into an 8" by 6" electrical box that mounts on the 4 by 4 post just under the solar hose panel.The systems been up and running for about a week now and I've averaged about a 2 degree rise in the pool's water temp' per day.If anyone is interested in seeing photos of the project, or the Arduino code, I'll be happy to provide. UPDATE: Here are some phots of the project...

Posted by bnelson218 5 weeks ago

I need to quickly correct this failure.

One of my important projects suddenly stopped opening in the Project. I stopped accessing it, and it all complicated me a lot. I can’t imagine how this could happen.

Posted by JodieSaunders 5 weeks ago

14-16V to 12V stable 20A max

Hi,I am looking at stepping down from (14 to 16V) to 12V drawing at max 20Ais there any efficient way to do so in a very very small package?Thank you

Posted by garnio 5 weeks ago

I get the message "replace the emergency stop switch" in my treadmill.

Hi. The treadmill is a Life Fitness T7. I would really appreciate any help on how to solve this problem.Thank you very much in advance.

Posted by Desgrac 5 weeks ago

I have continuity in both coils (AC-DC) but no power output?

I have a 12v 2A transformer without power outputI testes/checked with a voltmeter both coils (AC-DC) but no V+ output

Posted by MarcosM117 5 weeks ago

​Make an optic close focus.

I want to be able to put my night vision monocular in front of my 2x scope on my airsoft.I need a combination of lenses to put between my scope and the NV to let the scope focus at a couple of inches (instead of 30 feet), and reduce magnification because otherwise I’d just be looking at a tiny part of the phosphor screen heavily magnified.I know it’s possible because a commercial unit is available, I just don’t know if it’s feasible for a guy like me (doesn't have a degree in optics) to build (I'm thinking no, but I figured I'd ask).Thanks for any help you can offer.

Posted by instrucables360 5 weeks ago

Arduino heating controller: solar panel, oil burner, stove. NEED HELP AND ADVICE

HI this is my first time with arduino and electronics so please be forgiving.i want to make a controller for my home heating system and if it possible be able to control (change temp. setting, see statistic, etc. by phone - Bluetooth).so, i have three source of heat: solar panels (water), oil burner, wet stove. first part of plan is to connect all electrical components correctly (to make sure nothing blowup), second step is the program. third connect controller with phone by android or have a option to send sms to turn on/off oil burner.let's startthe heating system should looks like that (photo attach)please don't focus on the plumbing (that's only sketch), electronic and programing is more important.program (second step) should do:1. if T5 >T2 pomp P2 work 2. if T3>55'C , P3 work but only if O1 is switch off (automatically P1 and M1 is off, because they will be connect directly to O1 power) 3. option to on/off O1 by click on the phone (or by modul GSM in the future e.g sim800L) 4. additionally options 2 and 3 they are conditioned by other sub-option of 5 zones (where hot waterwill flow, so what will be heat): a)olny hot water in the tank- M3 open, b)only underfoor h.- M2 open, c)only radiators- M4 open, d) all heating, no tank- M2 i M3 open, e) all M2 M3 M4 open. so, before turn on O1 start making fire T3, one of the zone have to be pre-sellect.also if T1 >60st.C (and O1 and P3 are off), P4 will turn on (dump extra hot water to underfloor h.).that's all, nothing more .... but it's to much complicate for me right now. :smiley-confuse: and third part: all should be controll by simple phone app (android) e.g. turn on/off oil burner (maybe timer), change temp. in tank, change zone, see statistics etc.thera are elements what i have already- arduino nano-logging data module-relay 8 ports-bluetooth modul At-09, ble-4.0-extension board nano v3.0- temp. sensors DS18B20 i connect everything by all info what i've found in internet. also i tried to do simulation in THINKERCAD but many of my elements are not exist in the program, stiil no win. i didnt want to connect power just in case of blow off :o this is what i already found online: about bluetooth only showing the links to proof my hour's spend in google.i think first two are the i put together all what i found and this is my first program:const int TANKSENSORT1 = A0; const int TANKSENSORT2 = A1; const int PANELSENSORT5 = A2; const int STOVESENSORT3 = A3; const int FLOORSENSORT4 = A4;const int RELAYO1 = 3; const int RELAYM2 = 4; const int RELAYM3 = 5; const int RELAYM4 = 6; const int POMP2 = 7; const int POMP3 = 8; const int POMP4 = 9;const int diffON = 6; const int diffOFF = 3;void setup(){ Serial.begin(9600);pinMode(PANELSENSORT5, INPUT); pinMode(TANKSENSORT1, INPUT); pinMode(TANKSENSORT2, INPUT); pinMode(STOVESENSORT3, INPUT); pinMode(FLOORSENSORT4, INPUT);pinMode(RELAYO1, OUTPUT); digitalWrite(RELAYO1, LOW); pinMode(RELAYM2, OUTPUT); digitalWrite(RELAYM2, LOW); pinMode(RELAYM3, OUTPUT); digitalWrite(RELAYM3, LOW); pinMode(RELAYM4, OUTPUT); digitalWrite(RELAYM4, LOW); pinMode(POMP2, OUTPUT); digitalWrite(POMP2, LOW); pinMode(POMP3, OUTPUT); digitalWrite(POMP3, LOW); pinMode(POMP4, OUTPUT); digitalWrite(POMP4, LOW);}void loop(){ float solarPanelTemperature = ((analogRead(PANELSENSORT5) / 1024.0) * 5000)/10; float hotWaterTankTemperature = ((analogRead(TANKSENSORT2) / 1024.0) * 5000)/10; if(solarPanelTemperature > (hotWaterTankTemperature + diffON)){ digitalWrite(POMP2, HIGH); do{ delay(250); solarPanelTemperature = ((analogRead(PANELSENSORT5) / 1024.0) * 5000)/10; hotWaterTankTemperature = ((analogRead(TANKSENSORT2) / 1024.0) * 5000)/10; }while(solarPanelTemperature > (hotWaterTankTemperature + diffOFF)); digitalWrite(POMP2, LOW);float stoveTemperature = ((analogRead(STOVESENSORT3) / 1024.0) * 5000)/10; if(stoveTemperature > 55){ digitalWrite(POMP3, HIGH); do{ delay(250); stoveTemperature = ((analogRead(STOVESENSORT3) / 1024.0) * 5000)/10; }while(stoveTemperature 55, a jesli T3float hotwaterTemperature = ((analogRead(TANKSENSORT1) / 1024.0) * 5000)/10; if(hotwaterTemperature > (60)){ digitalWrite(POMP4, HIGH); do{ delay(250); hotwaterTemperature = ((analogRead(TANKSENSORT1) / 1024.0) * 5000)/10; }while(hotwaterTemperature // still missing: // bluetooth modul // or logging data modul (statistics) // before heating will be on one of the zones have to be setup.(and save) // 'life' option for changing the zones M2, M3, M4 } delay(250); }and i stuck again.i'm looking for advise about proper electronic setup and program the arduino. i believe there are many people like me looking for help, so this post will have a bigger impact.regards

Posted by eukaliptus 5 weeks ago

Led on in sequence one by one

I want to make a circuit to turn on all led one by one. I tried to do it with 4017 . But that ic turn off the previous led but i want to tun on all led one by bye in sequence.

Posted by HoneyS26 5 weeks ago

Including comments in a download

I was possible in the past to choose to download comments with a project. This ability has disappeared. Any chance of a revival ? Many times a comment may add to the value of the project or point out, for example, a safety problem.Thanks JohnO

Posted by JohnMTWAO 5 weeks ago

SMD components codes

Its my first time using smd components i bought some transistor but i dont know how to identify itcode written on it is 3ft22what transistor is this and how you read code like these ?

Posted by DabuHackker 5 weeks ago

Create a phone shell/frame/body?

Hello all,The new phones these days break too easily and its harder and harder to replace the battery or sim card. Instead of buying or making a case, my idea is to make a phone shell/frame/body with a 3d printer, and just taking the parts out of my Samsung and just putting it into that.Is it doable?

Posted by frostieff 6 weeks ago

Please help me solve this error in code

Arduino: 1.8.5 (Windows 8.1), Board: "Arduino/Genuino Uno"C:\Program Files (x86)\Arduino\libraries\NewSoftSerial-master\NewSoftSerial.cpp:39:24: fatal error: WConstants.h: No such file or directory #include "WConstants.h" ^compilation terminated.exit status 1 Error compiling for board Arduino/Genuino Uno.This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences./* JPEG Camera Example Sketch The sketch will take a picture on the JPEG Serial Camera and store the jpeg to an SD card on an SD Shield Written by Ryan Owens SparkFun ElectronicsHardware Notes: This sketch assumes the arduino has the microSD shield from SparkFun attached. The camera Rx/Tx should be attached to pins 2 and 3. IMPORTANT: The JPEG camera requires a TTL level shifter between the camera output and the arduino. Bypassing this may damage the Arduino pins. */This example requires the MemoryCard, SdFat, JPEGCamera and NewSoftSerial libraries #include #include #include #include #if defined(ARDUINO) && ARDUINO >= 100 #include "Arduino.h" #else #include "WProgram.h" #endif #include //Create an instance of the camera JPEGCamera camera;//Create a character array to store the cameras response to commands char response[32]; //Count is used to store the number of characters in the response string. unsigned int count=0; //Size will be set to the size of the jpeg image. int size=0; //This will keep track of the data address being read from the camera int address=0; //eof is a flag for the sketch to determine when the end of a file is detected //while reading the file data from the camera. int eof=0;void setup() { //Setup the camera, serial port and memory card camera.begin(); Serial.begin(9600); MemoryCard.begin(); //Reset the camera count=camera.reset(response); delay(3000); //Take a picture count=camera.takePicture(response); //Print the response to the 'TAKE_PICTURE' command. Serial.write((const uint8_t*)response, count); Serial.println(); //Get the size of the picture count = camera.getSize(response, &size); //Print the size Serial.print("Size: "); Serial.println(size); //Create a file called 'test.txt' on the SD card. //NOTE: The memoryCard libary can only create text files. //The file has to be renamed to .jpg when copied to a computer."/test.txt", true); //Starting at address 0, keep reading data until we've read 'size' data. while(address void loop() {}

Posted by AhetekuD 6 weeks ago

Bluetooth Arduino quad copter

I making a Bluetooth controlled Arduino quadcopter. I want some help with the code. It is using mpu6050 gy521 breakout board. Please help. I want it to auto level.

Posted by harshitsingh.111001 6 weeks ago

Cree XB-D driver circuit

Hi Everyone,I would use following design with some modifications to be able to drive 3x3 Cree XB-D LEDs Green/Blue: Step 8 #4I would use 12V ATX computer PSU as voltage source.PWM source: Arduino nanoAttached picture show how I modified the design: 3x3 LED setupMy main concern, is it correct my calculation of LED currents: based on my understanding, 220mohm current sense resistor setup 2,272A current through FET. Based on Kirchhoff's current law, it will be 757mA for 1 LED.Is that correct?Any advise and suggestion would highly welcome.Thanks,Best Regards,Gyorgy

Posted by bernathg 6 weeks ago

How can i get my PC to detect a WIFI signal again?

About 3 weeks ago, I was trying to update from win10 v 1709 to Win 10 version 1803 but I couldn't finish because the signal for this particular WiFi at the Lodge became so weak all of the sudden. Actually, the lodge has two routers- one with the excellent signal and the other with a very weak signal. What surprised me is that my android phone detects the signal immediately I enter the lodge premise but my PC won't. This WIFI network only shows up on the available networks for a few seconds and it disappears for hours. Sometimes I get lucky, it comes on and connects automatically but limited service. So I think my PC has a problem and not the router. Any help please. I'm stuck here for like 3 weeks, school work isn't easy to do anymore. I've atrached pictures from which u will see what Im talking about. I'll appreciate your responses.

Posted by Kale Vioe 6 weeks ago