Pinout and Datasheet Summaries of MCUs

Arduino Uno R3

Arduino Uno R3

MCUs

The classic beginner microcontroller board, built around the ATmega328P chip.

 ESP32-WROOM-32

ESP32-WROOM-32

MCUs

Common ESP32-WROOM-32 38-pin DevKit V1 layout.

 ESP8266 (NodeMCU)

ESP8266 (NodeMCU)

MCUs

Cheap Wi-Fi microcontroller board built around the ESP8266 chip, the predecessor to the ESP32.

 Raspberry Pi Pico

Raspberry Pi Pico

MCUs

Small, cheap microcontroller board built around the RP2040 chip.