How to Build Obstacle Avoiding Robot for Beginners With Arduino Tutorial





Introduction: How to Build Obstacle Avoiding Robot for Beginners With Arduino Tutorial

This Tutorial is for anyone getting started with arduino. We will be building an obstacle avoiding robot that uses an ultrasonic HC SR-04 sensor to detect objects and 2 continuous (360 degree) servos wired to an external battery supply. This project uses an Arduino Uno without motor shield. The code is not mine, but not sure who to give credit to as I combined about 4 different sketches I found online.

Comment with any questions and sorry I said UMMM about 3000 times, I get nervous on camera...

All parts and code can be found here :

CH340g driver for chinese arduino uno can be downloaded here:

Step 1:



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    hey .. very nice vedio ..can i have the program plz i checkde with the link that you have mentioned bt unable to get the code

    Sorry about that just fixed the link, it's not pretty but it works for now.

    I made the robot and it worked finally :) BUT now I went to use it again after it sat for 4 or 5 days and I went to show it to someone, and it only goes in circles. Can you maybe explain to me what I did wrong that this could happen? Thank you so much.

    Yeah my bad, I should have mentioned somewhere to undo the power wire while its sitting I think the battery may have slowly drained. Change the batteries and it should work again no problem.

    Can i use 2 dc motors instead of servos? Please reply

    You can but you would need geared DC motors and you would have to connect the to the board through a motor shield or an h bridge set up

    I am using futaba s3003 are they correct servos to use ???

    I do not believe those servos will work, they need to be labeled continuous or 360 degree to work for this tutorial. However, with some modification you can make it rotate continuously to work for this tutorial. Check this out

    oh sorry i used 180 degree now i am using 360 they are working

    Nice, glad to hear that!