Board ESP8266 WiFi Motor Drive Expansion for NodeMCU ESP-12Emotor power, control power separation; In the experiment, from the short circuit block, the VIN and VM short, while the motor power supply and the control boardModule provides sub short circuit (short VM and VIN), single power can be used (must 4.5V ~ 9V) while complete motorization and controlWhen plugged into the ESP-12E module, align the antenna direction of the ESP8266 WiFi module with an expansion board antennaThe use of short modules that can simultaneously control edge and motor.Specification:ESP8266 WiFi Motor Drive Expansion Board For NodeMCU ESP-12EMotor power supply (VM): 4.5V ~ 36V, can be powered separatelyControl power (VIN): 4.5V ~ 9V (10VMAX), can be powered separatelyModule provides short-circuit sub (short the VM and VIN), you can use one power (must 4.5V ~ 9V) while completing motor drive and control Operating current Iss: 60mA (Vi = L), 22mA (Vi = H)Drive part of the work current Io: 1.2AMaximum power dissipation: 4W ( = 90 )Control signal input level: High: 2.3VVIHVIN; Low: -0.3V1.5VWorking temperature: -25 ~ + 125 Drive Type: Dual high-power H-bridge driverESP12E Dev Kit Control Port: D1, D3 (A motor); D2, D4 (B motor)Expand two-way motor-, two-way direct drive motorOnboard power switchMotor power, control power separation; In the experiment, by short-circuiting block the merger, the VIN and VM short, while power to the motor and the control boardsize: 6 x 4.3cmMaterial: PCBcolour: black+bluePackage Contents:2 x ESP8266 WiFi Motor Drive Expansion Board(L293D)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.