Feature: ESP12 DEV KIT development board extension module; The ESP12 development kit leads all the function pins: SPI, UART, GPIO, AI and 3.3 V power connector; Expand the two-way motorized direct drive, two-way engine; On-board power switch; Motor power range: 4.5V ~ 36V; Control power range: 4.5V ~ 9V; Motor power, separation of control power; In the experiment, by short-circuiting, block the fusion, the VIN and the VM are in short-circuit, while feeding the engine and the control card. Note: When you insert the ESP-12E module, note the direction of the antenna on the expansion card. Use of the short-circuit module which can simultaneously control the card and the power supply
