Hi, I am making a simple 4 wheel robot with two 12v motors and arduino at 5v. Currently I am using two separate batteries: a 5v USB battery bank, and a 12v LiFePo4 battery for the motors, and the two batteries share the same ground.
My question is whether I can just use the 12v battery and use a converter to step down to 5v for the arduino. However, I recall that there may be problems when first power on because for a moment, the arduino isn't quite ready so the motor may run wild. Ideally there should be a power on delay (if such thing exist) between the logical power on vs. the motor power on (driven by H-bridge). However, using two battery systems is a bit hard to maintain. Have to charge each separately etc.
Any recommendations? Thanks.
My question is whether I can just use the 12v battery and use a converter to step down to 5v for the arduino. However, I recall that there may be problems when first power on because for a moment, the arduino isn't quite ready so the motor may run wild. Ideally there should be a power on delay (if such thing exist) between the logical power on vs. the motor power on (driven by H-bridge). However, using two battery systems is a bit hard to maintain. Have to charge each separately etc.
Any recommendations? Thanks.