L293D Motor Drive Base for ESP8266 V2 boards

This shield board routes four pins: D1, D2, D3, and D3,  to control onboard L293D driver chip.
Than can be used to drive 2 DC motors, or one stepper.
In 2 motor setup, pin roles are: PWMA(motor A), PWMB (motor B), DA (direction of motor A), and DB (direction of motor B), respectively.

In addition, this shield board has many pins, such as VIN, 3.3V, DIO, AIO, SDIO, UART, SPI, RST, and EN, thus can conveniently connect all kinds of sensors (e.g., range, temperature and humidy, buzzer, light, relay sensor, etc.).

Shield is compatible with narrow esp8266 boards: "NodeMCU V2", "Amica" and "NodeM"

• Logic working current Iss:<=60mA (Vi=L), <=(Vi=H);
• Driven working current Io: <=1.2A;
• Max of dissipation power: 4W(T=90℃)；
• Control signal input voltage: 2.3V<=VIH<=VIN (high), -0.3V<=VIL<=1.5V (low);
• Woring temperature:* -25℃-+125℃
• Driven model: double ways large power H bridge driven;
• ESP-12E Dev Kit control port: D1, D3 (motor A); D2, D4 (motor B);
• Weight: about 20g.