/ Arduino / Adafruit Metro

Adafruit METRO

33 GUIDES | 491 PAGES | 1 FEATURED | 2 POPULAR

The Adafruit METRO is an Arduino Uno equivalent board designed with a few extra features to improve upon the original Uno. We sure love the ATmega328, and we use it a lot for our own projects. The processor has plenty of GPIO, analog inputs, hardware UART, SPI and I2C, timers, and PWM galore.

Keep up to date on the current Bitcoin price index with this large matrix display
By John Park

Bitcoin Value RGB Matrix Display

2
Beginner
Everyone's streaming, from Zoom to Twitch to YouTube and more. This sign will let people know not to knock on your door when you're ON AIR!
By John Park

RGB Matrix Automatic YouTube ON AIR Sign

10
Beginner
There is no better way to visualize cloud data than with an actual cloud.
By Richard Albritton

CircuitPython Connected Weather Cloud Lamp

3
Intermediate
Easily display status messages with Stream Deck and an RGB Matrix Panel
By M. LeBlanc-Williams

Stream Deck controlled RGB Message Panel using...

20
Beginner
Create, display and share autostereograms with this CircuitPython project
By Dan Cogliano

Tiny Autostereogram Construction Kit

2
Beginner
Have some a-MAZE-ing fun with this non-soldering project, creating random mazes and their solutions at various difficulty levels.
By Dan Cogliano

ePaper Maze Maker

3
Beginner
Build this eInk / ePaper weather station
By Dan Cogliano

eInk / ePaper Weather Station

40
Intermediate
Give your project an AirLift with a Metro board with WiFi and BLE
By Brent Rubell

Adafruit Metro M4 Express AirLift (WiFi)

7
Beginner
Display a monthly calendar using this ePaper display
By Dan Cogliano

ePaper Calendar Featuring Metro M4 Express Airlift...

8
Beginner
Program or Re-Program a SAMD Bootloader
By Brent Rubell

How to Program SAMD Bootloaders

11
Intermediate
A MakeCode editor for breadboard friendly boards
By Peli de Halleux

MakeCode Maker

3
Beginner
Make your own neon-style signs with LED "neon" strips. Animate the sign with a Metro M0
By John Park

Neon LED Signs

13
Intermediate
Inside the ATMega328: a guided tour of a classic Microcontroller
By Dave Astels

Digital Circuits 7: MCUs... how do they work?

7
Intermediate
Un-Constricted CircuitPython Debugging in a Windows Environment!
By Michael Schroeder

Debugging CircuitPython On SAMD w/Atmel Studio 7

10
Intermediate
In this guide, we design and build a ROM emulator
By Dave Astels

Digital Circuits 6: An EPROM Emulator

6
Intermediate
Choo! Choo! ARM Cortex M4 @ 120 MHz coming thru!
By lady ada

Adafruit Metro M4 Express featuring ATSAMD51

27
Beginner
Interface of Infinite Possibilities: Matrix keypad and NeoSegment display
By John Park

Mystery Box: NeoMatrix Mk I

16
Intermediate
computers are overrated anyhow
By Dean Miller

Programming an M0 using an Arduino

17
Intermediate
Harness the power of the Adafruit Metro by making 18 Circuits!
By Brent Rubell

Experimenter's Guide for Metro

46
Beginner
Slim all-in-one Metro that's breadboard friendly
By lady ada

Adafruit Metro Mini

9
Beginner
What time is it? Metro Mini time! Build this stylish, minimalist clock.
By John Park

Metro Minimalist Clock

28
Intermediate
Revisiting the Olde Days of television and radio
By Phillip Burgess

Circuit Playground Express (& other ATSAMD21 Boards)...

12
Intermediate
CircuitPython, Arduino IDE or even MakeCode with this Metro M0
By lady ada

Adafruit Metro M0 Express - Designed for CircuitPython

28
Beginner
Using GDB to better understand program state and history.
By Scott Shawcroft

Debugging the SAMD21 with GDB

13
Intermediate
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