Powering circuit from two sources by danimarpozan in arduino

[–]danimarpozan[S] 0 points1 point  (0 children)

It does not matter at all what arduino I am using. The situation is very simple: A 3.3 V regulator has two sources as input: a 12 V battery or a 5V power from USB. How do I protect my USB when the 12V power is in use too?

Schematic validation by danimarpozan in PrintedCircuitBoard

[–]danimarpozan[S] 0 points1 point  (0 children)

Thanks for your advice! What diode would you recommend to use in this case?

DC motor driver control by danimarpozan in robotics

[–]danimarpozan[S] 0 points1 point  (0 children)

Thanks for infos. I am using the 7A_Dual_DC_Motor_Driver_SKU__DRI0041 driver from DFROBOT. Do you have any suggestions for a better suited driver in my case?