Specification

    1.Motor power (VM): 4.5V ~ 36V, can be a separate power supply;
    2.Control power supply (VIN): 4.5V ~ 9V (10VMAX), may be a separate power supply;
    3.Module Jumper (short the VM and VIN), you can easily use one power (must 4.5V ~ 9V) simultaneously drive and control the motor;
Logical operating current Iss: ≤60mA (Vi = L), ≤22mA (Vi = H);
Part of the work drive current Io: ≤1.2A;
Maximum power dissipation: 4W (T = 90 ℃)
Control signal input level: High: 2.3V≤VIH≤VIN; Low: -0.3V≤VIL≤1.5V
Operating temperature: -25 ℃ ~ + 125 ℃
Drive Type: Dual high-power H-bridge driver
ESP12E Dev Kit Control Port: D1, D3 (A motor); D2, D4 (B motor)
Module Weight: about 20
the ESP 12 DEV KIT development board expansion module;

    1:lead ESP12 DEV KIT all the features of pins: SPI, UART, GPIO, AI and 3.3V power connector;
    2:expand two-way motor-driven, two-way direct drive motor;
    3:onboard power switch;
L293D
    1.Motor Power Range: 4.5V ~ 36V;
    2.control supply range: 4.5V ~ 9V;
    3.Motor power, control power separation; In the experiment, a short circuit can block the merger, shorted to VIN and VM, and the motor control board and power supply.