My first attempt at a motor controller this board was somewhat poorly thought out.
This board was designed to take 12V input and supply 5V to an attached rpi and power 4 low power integrated H bridge chips. The ESP was present to allow Wi-Fi for the rpi (back in the days rpis didn't have there own radios) as well as driving the H bridge chips as the rpi didn't have the pwm channels needed. The Rpi communicated with the rpi via UART and ran its own firmware. More then anything else this board was a learning opportunity (as so many of my boards would be)
