James Lewis
Published © GPL3+


The only Arduino designed for healing (probably not). Okay, but it is designed for teaching.

IntermediateFull instructions provided2 hours992

Things used in this project

Hardware components

Microchip Technology ATmega328
It's the brain. So many brains.
Microchip Technology MIC5504
3.3 300mA LDO with an enable pin. Despite what one page says, the "enable pull-down resistor" disables the regulator.
Custom fabricated PCB
OSH Park Custom fabricated PCB
Many Pretty. Many Thanks. Can be yours with this magic link: https://oshpark.com/shared_projects/0KdwuVh6

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Toaster Oven Reflow


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KiCad Files

KiCad 5 Schematic and PCB with "final" design.

Pyramidiuno V5 Asbly BOM

Part numbers with reference designators. I did not specify part numbers for the headers or LED.


Exercise Code

This code cycles through analog or digital pins, turning them on and off one at a time. Originally written with direct port manipulation, but slower sample rate logic analyzers will miss some edges.


James Lewis

James Lewis

8 projects β€’ 325 followers
Fan of making things that blink, fly, or beep. Host on element14 Presents, baldengineer.com, AddOhms, and KN6FGY.