Planck-like development board for QMK, using SparkFun MicroMod for hot-swap MCU capability.
2x4x5=40 layout with encoder and RGB OLED, per-key RGB.
Has hardware support for MicroSD, SPI EEPROM, SPI NOR Flash.
Uses 74HC589 SPI Shift Registers for key matrix.
(images generated by tracespace)