| MCU | Tested Works | Doesn't Work | Not Tested | Notes |
|---|---|---|---|---|
| Atmega328 @ 16MHz | X | |||
| Atmega328 @ 12MHz | X | For SPI, Pro Trinket has no pin 2, can move to pin 5. | ||
| Atmega32u4 @ 16MHz | X | |||
| Atmega32u4 @ 8MHz | X | |||
| ESP8266 | X | For SPI, ESP8266 has no pin 3, moved to pin 5. | ||
| Atmega2560 @ 16MHz | X | |||
| ATSAM3X8E | X | |||
| ATSAM21D | X | I2C works, use SDA and SCL pins. For SPI, LCD blinks once on start up. | ||
| ATtiny85 @ 16MHz | X | Use TinyLiquidCrystal libray instead: https://github.com/adafruit/TinyLiquidCrystal |
I2C uses SDA & SCL pins 0 & 2 ATtiny85 @ 8M | | X | | Use TinyLiquidCrystal libray instead: https://github.com/adafruit/TinyLiquidCrystal
I2C uses SDA & SCL pins 0 & 2
- ATmega328 @ 16MHz : Arduino UNO, Adafruit Pro Trinket 5V, Adafruit Metro 328, Adafruit Metro Mini
- ATmega328 @ 12MHz : Adafruit Pro Trinket 3V
- ATmega32u4 @ 16MHz : Arduino Leonardo, Arduino Micro, Arduino Yun, Teensy 2.0
- ATmega32u4 @ 8MHz : Adafruit Flora, Bluefruit Micro
- ESP8266 : Adafruit Huzzah
- ATmega2560 @ 16MHz : Arduino Mega
- ATSAM3X8E : Arduino Due
- ATSAM21D : Arduino Zero, M0 Pro
- ATtiny85 @ 16MHz : Adafruit Trinket 5V
- ATtiny85 @ 8MHz : Adafruit Gemma, Arduino Gemma, Adafruit Trinket 3V