Linak Controller Board is a small form factor pcb design which features ESP8266 for WIFI communication, this board is designed to control Hospital Bed with quad DC motors. (Kicad V6)
Each Motor uses 2 relays to change polarity and reverse rotation, also a linear voltage regulator is featured to power NodeMcu v3 board with small SPI pin connector on the side as extra utiltiy.
you can download schematic here.
