Tips and Tricks for Development on Espressif ESP32 / ESP8266 boards

Pins to use on ESP32 Pins to use on ESP32 (source)

Pins to use on ESP8266 Pins to use on ESP8266 (source)

M5Stack

M5Stack combines an ESP32, a 320×240 px OLED display, and some other peripherals into a small brick (5x5x2 cm). It is great for prototyping and one-off tangible user interfaces.