2WD Smart Car Robot Ver2

Hello I'm currently working to my 2Wd Smart Robot Chassis for Arduino Uno R3 (link: https://l.facebook.com/l.php?u=https%3A%2F%2Fph.shp.ee%2FpMcaNqt&h=AT1fDm5wz9KKEcMKNMiizAg_EIwoDLpBUlKoHsXcV8S-JORpsFELLJXdX8kXO7LJ8XLhrNE0u_WglAj5cQ3Kix4xYdDIZN_0viRZsnoGU_34ovO_UmGArS3GlgE0UU0&s=1)

I follow all the instructions in the pdf that you send, at first all the lesson 1 to 3 are functions properly but when i start to enter the code that you give in lesson 4, my robot car just making circle and do not detect the white and black

Please help me, i don't know what to do...I already tried different code huhuhu

Please extract code and schematics and post it here.

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Sorry your link takes me to Facebook then to shoppe and since I do not have an account it cannot access it. You will need to post the annotated schematic and code using code tags as requested by @Railroader

Try this... each device is tested separately...

That makes it 2 of us.

Hi, @coreeen
Welcome to the forum.

https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum

Can you please post YOUR code that you have programmed into your UNO?

Tom.... :smiley: :+1: :coffee: :australia:

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Sorry, but who is "you"?