Based on the first motor-driven expansion board ESP-12E development. Features: ESP12 DEV KIT development board expansion module; lead ESP12 DEV KIT All-function pins: SPI, UART, GPIO, AI and 3.3V power connector; expand two-way motor-driven, two-way direct drive motor; onboard power switch; L293D Motor power range: 4.5V ~ 36V; Control power range: 4.5V ~ 9V; Motor power, control power separation; In the experiment, by short-circuiting block the merger, the VIN and VM short, while power supply to the motor and the control board.
