IEBPROJECT CASE STUDY
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3D render of a green keyboard PCB with daisy line art and handwritten text on the silkscreen

PCB designPart 2 of 4Drawing 16.2 of 47

Version 2

Built on ScottoModules and working: switches, keycaps, QMK with VIA, and my own remapping app.

Sheet 02 of 03/Gen2

Built on ScottoModules

The second grew out of Joe Scotto's ScottoModules template, which gives you the STM32 and leaves a blank box labelled "Matrix" for you to fill in. I filled in the matrix and drew my own art on the silkscreen.

KiCad schematic sheet for the wired keyboard showing the STM32F072 microcontroller, USB-C receptacle and switch matrix
PL 07The schematic for the wired board, which the fabrication package was made from. It has an STM32F072 over USB-C, 84 diodes and an I2C header that hinted at what generation three became.

Sheet 03 of 03/Gen2 built

Built and working

It's built: switches in the hotswap sockets, keycaps on, and running QMK with VIA over USB-C. All 84 keys pass the key test. I also wrote my own app for it, Keyboard Editor, to remap keys on four layers and flash new firmware.

A white keyboard PCB on a desk mat with cream low-profile switches in every socket, hand-drawn flowers and handwritten text on the left edge and a USB-C port
PL 13Version two with the switches in: a white board, my own daisy art and handwriting on the silkscreen, and USB-C on the left.
The white low-profile keyboard with white and grey keycaps, a red Esc and a red Enter, plugged in with a white USB-C cable in front of a larger keyboard
PL 14Version two finished, with keycaps on and plugged in over USB-C.