ESP-12E motor drive expansion board

Introduction:

Motor drive expansion board developed based on ESP-12E.

Features:

-  ESP12 DEV KIT development board expansion module;

-   Lead out all function pins of ESP12 DEV KIT: SPI, UART, GPIO, AI and 3.3V power interface;

-   Extend two-way motor drive, which can directly drive two-way motor;

-   Onboard power switch;

-   L293D

-   Motor power supply range: 4.5V~36V;

-   Control power supply range: 4.5V~9V;

-  Motor power supply and control power supply are separated; in the experiment, the short-circuit block can be combined to short-circuit VIN and VM, and power the motor and control board at the same time.

Product technical specifications

• power input:

  ~ Motor power supply (VM): 4.5V～36V, can be powered separately;

  ~ Control power supply (VIN): 4.5V～9V (10VMAX), can be powered separately;

  ~ The module provides a short circuit (short-circuit VM and VIN), you can easily use a power supply (must be 4.5V ~ 9V) at the same time to complete the drive and control of the motor;

• Logical working current Iss: ≤60mA (Vi=L), ≤22mA (Vi=H);

• Working current Io of the driving part: ≤1.2A

• Power dissipation: 4W (T=90℃)

• Control signal input level: high level: 2.3V≤VIH≤VIN; low level: -0.3V≤VIL≤1.5V

• Working temperature: -25℃～＋125℃

• Drive form: dual-channel high-power H-bridge drive

• ESP12E Dev Kit control port: D1, D3 (A motor); D2, D4 (B motor)

• Module weight: about 20g
  
  

  Board uses 4 pins to control motors. PWMA, PWMB- speed of motors. DA, DB-direction of motors(0-straight;1-reverse).

  Here pinout for NodeMcu

  • PWMA-GPIO5.
  • PWMB-GPIO4.
  • DA-GPIO0.
  • DB-GPIO2.

Shipping list

ESP-12E expansion board: 1