Motors run full speed as soon as Arduino is powered up and not connected via USB

[circuitBurn]

This happens with any sketch, even the examples.

Sketches upload and run fine when tethered by USB and the serial monitor displays the right output, but when the Arduino is powered up without a USB connection (even with the infinite loop Serial check removed) the motors are all on at full speed.

[facchinm]

Hi @circuitBurn ,
we released version 2.0 of the library with fw 0.20 that should fix the motors startup.
Can you try updating both the library and the carrier (using Flasher sketch) and report back if it's fixed on your setup? Thanks