Good morning. I am creating a robot with steering controlled by a servo motor that uses the PM-R3 shield as a motor driver and is remotely controlled via a PS2 wireless controller. I noticed that when Arduino is connected via USB, loading the test sketch available at https://www.instructables.com/Ho…

Different behavior of the sketch if Arduino is powered by battery

ardtux June 30, 2025, 10:07am 3

I used a 7.4V, 1200mAh RC battery. The Arduino is an UNO R3.

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