The PCB design and source code are available on GitHub. Posted in Arduino Hacks Tagged arduino , arduino shield , BLDC , Brushless DC electric motor , motor controller , sensorless Post navigation ...

BTW, the inputs in the associated motor drivers are opto-isolated and so ground lops will not be formed with the HC245 outputs. 32bit disappointment? The glee was slightly tempered by disappointment ...

UPDATE: There are some cheap motor driver boards for Arduino projects at the end of this blog. Never use this Circuit (right) ... For example, the ZTX749 pnp will carry 300mA while saturating to 100mV ...