Img.6561.mp4

Features

Count the days your workplace can go without having any incidents, such as bad puns or industrial maimings
High-fidelity audio mimicking a groaning human voice, if the human voice is a square wave
Exceeds the GPIO pins' absolute maximum voltage ratings
Big chonky button to reset the counter to zero 👌

Required components

An Adafruit METRO 328.
A 9V DC barrel jack power supply. See the Adafruit METRO documentation for which ones will fit.
2 big 7-segment displays. I'm not sure which ones I used, but they're probably the SA23-11SURKWA or something equivalent.
Any big button, like this arcade button.
An 8Ω speaker.
100Ω and 220Ω resistors.
Some kind of enclosure to hold it together. Mine is a 3D-printed frankenstein that isn't easily reproducible—sorry!
Solid-core wire recommended for stabbing into the METRO's GPIO headers and wiring point-to-point.

Wireup

See include/pins.h.

Development

This project uses PlatformIO.

Install PlatformIO according to their instructions and your editor or IDE preferences.
Program the board with pio run -t upload, or however your IDE does it.