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 3 months 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 3 months 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 < size) { //Read the data starting at the current address. count=camera.readData(response, address); //Store all of the data that we read to the SD card for(int i=0; ivoid loop() {}

Posted by AhetekuD 3 months 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 3 months 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 3 months 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 3 months ago

Graduation card box ideas

I know this is more craftsy but I'm trying to find ideas for my son's graduation party for making a card box, a place where guests can snap a picture with props and that kind of stuff. Any ideas & input are appreciated. I checked Pinterest but nothing caught my eye.

Posted by DUMB8 3 months ago

Can see instructables on phone but not on computer

I can get the instructable topics on my phone, but not on my computer. How do I fix this?

Posted by porscheman1 3 months ago

Convert airgun/Paintball gun to be fired by a computer (12v solenoid valve)

Hi!I have a project this summer where I need to convert a paintball marker and a co2 Airpistol to be fired by the use of a solenoid valve powered by 12v.The project goal is high-speed photography, more or less photographing object being hit by a projectile.What i need is a way to fire these guns precisely by the use of my computer and software, and since I already have plenty of 12 solenoid valves that work with this system I thought my easiest way is to adapt these valve to trigger the guns one way or another.I just purchased a Valken V-TAC SW-1 which I plan to use as base (for parts) My reason for getting this particular one was that it was on sale for 50% and seems to be fairly popular as it's based on the Tippmann 98 design.I attached an image of the valve I used with my controller and software (Cognisys Stop shot) now I can probably use any 12v solenoid valve (with the same spec ?) as the one I use now so it doesn't need to be these exact valves. As long as they can be operated by turning on-off power with the same powersource i use to control my current solenoid valves.From my understanding, most airguns use a pin valve, which is hit by a trigger mechanism that is then rearmed by the blowback.What would be the best way to modify an airgun for my needs? Replace the pin valve with a suitable solenoid i can control instead? Or go for a design that uses maybe use a piston and 2-way valve to hit that pin?The gun does not need to be mobile or ergonomic, it will be placed in a rig regardless, however keeping the barrel and keep the Picatinny is preferred to be able to mount marking aids etc. and mount the gun to a tripod.Any tips or suggestions are highly appreciated!Thank you!

Posted by PaulL320 3 months ago


I just want to tell all you workers at instructables how happy I am today! The package came and I went crazy! Everything was so awesome I just wanted to let you know how grateful I am for this experience! Again, thank you and keep being awesome! With many thanks, Mrwonton (•o•) Ps... the little instructables robot pins are SWEET!

Posted by mrwonton 3 months ago

Reformatting bugs

I just published an instructable but I'm dismayed to see the autoformatting has made it look pretty rotten. Steps 2 & 3 have wide aspect ratio images and they have been cropped and rendered in very low quality. The autoplay youtube function (where you can make a youtube video look like a gif) no longer works and the aspect ratio chosen seems to be ignored, so you get the black bars even when you do hit play. Any chance this cropping/breaking can be fixed? Thanks.

Posted by makendo 3 months ago

Li-ion 5 pin, pinout?

Good Day Fellow TinkerersI have a battery that came out of a Android Tablet that i want to use for another project.It has a cuircuit board attache to the top which i would assume is a over/under charge protector and it has 5 wires coming off of that. 2 x Red, 1 x White and 2 x Black.The two black wires are connected to the same pad on the "protection circuit" and the two red are connected to the same pad. The white wire is on a separate pad i.e. 3 pads, 1 with 2x red, 1 with 2 x black and 1 with 1 x white.I figure the Red would be positive and the Black negative and then i would assume that the white is the Thermistor connection.My Question :How do i connect this externally from the tablet to charge? I figure red and black are the usual, but how do i connect the white wire?Thanks in advance for any help :)

Posted by GhengisKhan1981 3 months ago

How images for website on raspberry

I create a page for managing raspberries, but I can not add a picture of what I'm doing to set the path to the picture in the index.html or how to open access to system folders in raspberry

Posted by АлексндрЛ 4 months ago

Arduino alarm clock help!

Hello I am trying to make a pressure switch for my alarm clock where when I stand on it for a certain amount of time the alarm will stop. I've never done any arduino work before so I was wondering what board would best suite me for this project. I found this one but I don't know if it will work. I also found some code online that I think would work. Here is the link for the code: Also would this be how I would set the entire thing up?Do I need any resistors? What type of power supply would I be able to use?

Posted by boom man56 4 months ago

Image Problems

Hey everyone, I just joined today. I was working on my first instructable, I tried to uplad an animated gif I made showing what it does. Well the gif is bugging out, and I can't figure out how to delete it from my library. So two questions: 1. Can animated gif's be uploaded somehow that won't mess them up? 2. How can I delete things from my library? PS: Is this the right place to post this?

Posted by oshihari 4 months ago

It would be nice...

It would be nice to see the full name of an instructable when you hover over it's title. Just an observation. Thank you.

Posted by Lord_Vek 4 months ago

Help me please for to download pdf

Help me please. I would like to download the pdf files and -Controlling-a-Raspberry-Pi-Robot-Over-Internet / but not able to register premium account files need urgently pogmogite please

Posted by АлексндрЛ 4 months ago

Adapting LCD Active Shutter Glasses (3D Glasses) possible?

Can you take a pair of Active Shutter glasses, ie. Samsung and adjust how fast the glasses are flashing (They usually flash around 92hz (48hz per eye), I was wondering if you could drop that down to 4-6hz per eye(8-12 hz overall)Is this possible? With a the circuits and timers?Any ideas on how to do this?Thanks

Posted by bethekind 4 months ago

I want to learn coding

Who can teach me coding from the basic with the necessary tools I need?

Posted by andyj82 4 months ago

How to bookmark a project

Does anyone know how to bookmark an Instructables project so that I can come back to it? Thanks. Scott U.

Posted by sumphrey 4 months ago