This is my build of a MiniMega2560 board. It uses the Mega2560 cpu with a CP2104 USB interface. The reason that I made this board was I wanted a more ports and memory for Arduino projects and I wanted a 3.3 volt Mega2560 that could be used with a breadboard.
MiniMega2560 Adapter – an adapter board to support Adafruit Feather boards using MiniMega2560 cpu 3.3 volt version
Steve says about the Feather board:
This board adds support for many of the www.adafruit.com feather boards so they can run on the 3.3 volt version of the MiniMega2560 running Arduino. Since the MiniMega2560 using the mega2560 cpu, you will need to change the software pin defines for some feather boards to use them with the MiniMega2560.
Thanks Steve for your hard work and recognizing that a new design does not require reinventing dozens of add-on boards. The Adafruit FeatherWing ecosystem is designed to a single tiny board standard to work with Adafruit Feather, Photon Particle, and other boards to provide extended capabilities. The specifications for Feather are Open Source (Software and Hardware), so there are no issues to adding FeatherWing support to your project.
Thanks to Adafruit user sembazuru for finding this great project and posting in the forums.
Have you built your own microcontroller system? Let us know in the comments!
Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.