ESP8266 Development Board Pinouts
Compare pinouts, electrical constraints, and peripheral capabilities across ESP8266 development boards.
30 pins
NodeMCU v2 Amica (ESP8266)
ESP8266EX (80 MHz)
Thirty-pin breadboard-friendly ESP8266 development board with Silicon Labs CP2102 and ESP-12E module.
16 pinsWemos D1 Mini v3.0 (ESP8266)
ESP8266EX (80 MHz)
Compact ESP8266 Wi-Fi board with 16 breadboard-friendly pins, integrated CH340C USB-UART bridge, and onboard reset button.
Hardware comparison
| Board | MCU | Pins | Clock | SRAM | Flash | Logic voltage |
|---|---|---|---|---|---|---|
| NodeMCU v2 Amica (ESP8266) | ESP8266EX | 30 | 80 MHz | 80 KB | 4 MB | 3.3 V |
| Wemos D1 Mini v3.0 (ESP8266) | ESP8266EX | 16 | 80 MHz | 80 KB | 4 MB | 3.3 V |