Hi,    iam using the arduino uno in my project.The project is to display the temperature and humidity in lcd and ethernet and stored in the sd card in every 1 minute ,using the dht 22 sensor.But the lcd display is not working simultaneously with the sd .Hereby i am attaching the code.pls hlp me to trobleshoot the problem.

Posted by sruthys 3 years ago


I would like to meet how integrated the fuctions interrupts in the encoder for increase the count in the car What am I doing. help!

Posted by gabon 1 year ago

Burn Arduino Bootloader to Arduino, from Arduino

I want to burn the Arduino bootloader to an Arduino from an Arduino. I have an Arduino Duemilanove, and I want to take the chip(ATMega328) off, and use it in a circuit, without having to connect the whole Arduino to the circuit. However, I then have an Arduino with no chip. So, Can I just put a regular ATMega328(I know I can just buy one with the bootloader already on it, but I would rather do itmyself.) into the Arduino, connect it to the computer, and use the Arduino IDE(I'm using 0021- the most up to date one) to burn the bootloader to it? If so, how? If I cant, is there any way to easily do it with only another Arduino with the bootloader on it?

Posted by metrogdor22 8 years ago

Arduino Beginner

I'm gonna start with arduino, I'll buy the arduino uno board, any suggestions for courses or books that can teach me how to program and work with arduino? Thanks in advance! :)

Posted by Kolnorp 4 years ago

Arduino monitoring Paypal Payments

Would an Arduino Wifi Shield allow an arduino to trigger something after a paypal payment is made?

Posted by Brooklyntonia 1 year ago

2014 - Arduino Day!

Hey guys! This Saturday, March 29 2014 is Arduino Day!  What are some of your favorite Arduino projects?  I am personally a fan of the Twittering Office Chair, The Arduino Step Sequencer, and this Tiny Arduino Laser Cutter (so cute!). If you want a good place to start with Arduino, check out this Instructable!

Posted by audreyobscura 4 years ago

Why the stipulation of using the Arduino IDE, and not the Arduino hardware?

I see that the new Arduino contest rules stipulate that your project must use the Arduino IDE. I was actually thinking of making a cool new Instructable using an Arduino Mega, but using avr-gcc instead of the Arduino "framework". Would that be permissible for entry into this contest?

Posted by matthewbeckler 9 years ago

arduino draw software

   for the software   

Posted by Jordan arduino 7 years ago

Arduino instructor wanted

Arduino instructor needed for summer course in NYC.      Contact  Include resume & experience.

Posted by davidgreenstein 5 years ago

IC connection with Arduino .

How to connect IC L298n with Arduino ??

Posted by manjusulagna154 1 year ago

Cannot download Arduino Projects ebook

The link for downloading the Arduino Projects ebook is invalid: it (AWS?) returns access denied.

Posted by asymmetric 6 years ago

A Tutorial for making an Arduino Shield.

Hi Folks, I've put together a tutorial on how to make an Arduino shield using EAGLE. It can be found here:

Posted by aarone 8 years ago

Arduino control via android

The arduino board needs to be controlled from My android mobile..!! is there a solution for controlling the arduino from the android mobile through any means like USB,Bluetooth or Internet...!!??

Posted by rraja2 5 years ago

Coming Soon: Arduino Contest

For all you Arduino fans out there, we're going to have an Arduino contest coming to the site soon. I can't give out any dates or prizes yet, but the only requirement for the contest will be that it involves Arduino in some way. What you do with the Arduino is completely up to you. More information soon.

Posted by fungus amungus 9 years ago

Arduino 8 Step Sequencer

Hi! I'm working on a arduino based step sequencer: I'll try to translate it to english, asap. knuppel

Posted by knuppel 5 years ago

Arduino instructor wanted in NYC

  I'm looking for someone to teach an Arduino course in NYC this summer. Contact me at Thanks. David

Posted by davidgreenstein 5 years ago

Pasting Arduino Code compiles it wrong

When i copy paste arduino code it crushes it all together so it is unreadable and unuseable.

Posted by Aquariums 4 years ago

Arduino Laser Shield

H, there are kits available from here -

Posted by Bitline 7 years ago

Arduino Hardware

Hi, I have found these folks selling hardware for the Arduino, Laters!

Posted by davidbraith 4 years ago

Can this be used with arduino

I opened up a Bluetooth dongle so i thought that if it can be used with arduino or not. The bluetooth  dongle was like this so plese help fast!!!!!!!!

Posted by rushabhpathak 6 years ago

Arduino - 2 wire fan

I have 2 wire fan (5V 0.15A) and I want to connect it with arduino board. Is it safe to connect it directly to arduino? And if it's not how to control the fan? Do I have to put some resistors?

Posted by dkorisnik 2 years ago

Arduino coder wanted (Willing to Pay)

Looking for someone to write an arduino sketch to drive a stepper motor on an XY table. Relatively simple code wanted Willing to pay 

Posted by PhillipF9 2 years ago

Arduino contest started judging early

I was looking at the arduino contest yesterday and it said judging started on feb 3 but today (the 29th) the judging started. Why?

Posted by bravoechonovember1 2 years ago

LCD Screen of arduino

Recently on ebay to buy online an arduino screen , the price is very cheap. Effect do not know how ? ? Anybody know?

Posted by michael g 4 years ago

9v battery usb charger kit for Arduino kit(s)

Will trade the pieces to make a 9v battery powered altoids tin charger for basic Arduino pieces.i want to get started with Arduinos but don't have cash.

Posted by Legitsmitty 4 years ago

Best DIY Arduino Clone

Hi everyone. I live in Mexico, and getting an Arduino is hard, not to mention way more expensive than the $30 US version. I was looking for some Arduino clones that you can do yourself (Open source, no kits) but since I've never used an Arduino I don't know how to compare them and decide wich is the best. I hope someone experienced on Arduino and Arduino clones can help me out. Thanks in advance. Cheers!

Posted by Skyriam 8 years ago

Connecting the Arduino to the Matlab

Hello I am a student electronic engineering I'm working on a project (the ball - on - plate) and I am having trouble connecting Arduino with matlab please help

Posted by aljaur 1 year ago


Looking for someone to write an arduino sketch for a stepper motor driven XY table Only looking for a basic, simple code Willing to pay but willing to accept volunteers also :)  Thanks!

Posted by PhillipF9 2 years ago

Arduino Home Automation

My new home is under construction and I was thinking of arduino based home automation for it. I am new to the arduino family so is it possible for anyone to help me step by step? It would be great if it is iOS controlled. Thanx in advance

Posted by harsh7827 6 years ago

I can not enter the arduino contest

I want to enter the arduino content with an instructable made on 14/03/2014 but it said I am not eligible. So, am I ?

Posted by kokpat 4 years ago

Uploading a single sketch to multiple arduino boards

Hi, I want to upload the same sketch to multiple arduino boards, say for eg 15 to 20 arduino uno boards. What could be the easiest way to do so? Thank You,

Posted by xshanky 3 years ago

Arduino PWM and RGB LED strips

Hi.  So I bought an arduino uno, some IRL530NBPF, and 4,3m RGB LED strips. I want to control the strip with the arduino, but can anyone tell me how to hook it up?

Posted by sinding 8 years ago

Arduino uno &Gsm modem

Can any body tell me that is there any difference btwn. Arduino gsm-shild  and normal gsm modem .?Do i have to code Arduino differently to send data when i'm using normal gsm modem ..?? and how can i connect Arduino-Uno to normal gsm modem..???

Posted by MeetR 3 years ago

Cheapest way to connect arduino with wifi

Can anybody tell me the cheapest way to connect an arduino over internet via wifi

Posted by amansinghaljpr 4 years ago

Non-Arduino Solar Charger

Do you think there is a great alternative to the current solar charger? Today, there are many DIY Solar Chargers that are alternatives to the current commercial products. Do you think there is a better design for a solar charger that is not run by an arduino?

Posted by hthnc-student 6 years ago

Can any one give me a free arduino ?

I am a electronic lover and I am 13 years old I need a  arduino(new or old). but I have no money to buy it so can any one give me a free arduino. please help me Thanks you

Posted by Soumojit 2 years ago

Avr, Arduino, ic...

I am new at electronics and I would like to knew more about AVR, Arduino, IC and others microcontrollers, so could someone give me site about it or make instructable whit codes, programming boards and pins.

Posted by Dantex 10 years ago

How do you connect multiple Inputs to an Arduino?

I need to connect 4 toggle switches and 1 pressure switch to an Arduino duemilanove. How do I do this and what is it recognized as in the arduino programming? pictures would help!

Posted by Buzzsushi 8 years ago

Arduino magnetic card reader with tape head

How can i make a arduino magnetic card reader with only a bare tape head without external circuitry 

Posted by atharva12 3 years ago

My first arduino robot

This is a short video of my first arduino robot (he doesn't move yet he needs a little more coding :)

Posted by iman 10 years ago

Need help with code from Arduino

Hi everyone. Want someone to build me a code for arduino. Its a simple project with GSM included. More info msg me. Thanks

Posted by Bisc 1 year ago

Arduino powerglove remake?

Would anyone be interested in making a non fail power glove type device using arduino? I believe we can rebuild it, we have the technology!

Posted by octopuscabbage 8 years ago

Arduino Nano as ISP Programmer?

I was excited to find out that an arduino could be used as an ISP programmer. But when I found out that the arduino uno does not support this feature, my dreams were crushed. I did recently buy an arduino nano and was wondering if I could use this as an ISP programmer. Any thoughts? Thanks for the help!

Posted by Robot Lover 7 years ago

arduino tvbgone

Does anybody know where I can get the code for an arduino based tvbgone ? thanks ~Matt

Posted by iman 10 years ago

burning a hex using arduino isp

I had programmed attiny with arduino via arduino as isp . I was programing with atmel studio for a while and wanted to burn the hex file to a chip using arduino isp. i tried a lot but always  was unsuccessful  stk500_getsync(): not in sync: resp=0x00 popped  ny idea how to get rid of this and program it

Posted by geekrex 3 years ago

RGB LED interface with arduino

I need to drive 5 3W RGB LEDs in series using an arduino. The maximum current required is 350mA each for R G and B dyes. and minimum current requirement is 2.4V, 2.4V and 3.5V respectively. What should I use to interface the LEDs with my arduino as the output current of each arduino pin is 50mA maximum Thanks in advance

Posted by pratham123 4 years ago

Arduino motion sensor camera

How do you connect the camera to the arduino at all? & how do you connect the camera to the motion sensor & make the sensor trigger the camera's on/off settings?

Posted by hthnc-student 6 years ago

PICAXE-28X1 Starter Pack (USB) vs Arduino diecimila

PICAXE-28X1 Starter Pack (USB) vs Arduino diecimila which of these two boards is better for a beginner?

Posted by silva_p 10 years ago

Cant write code on arduino help!

I want to know how to program an arduino uno but i dont know how theres always and error please reply

Posted by Jordan arduino 7 years ago

I've made a Nyan Cat Arduino Code

Everyone just check the instructable to download the code

Posted by geo bruce 7 years ago