Update: the PCBs have arrived. Shipping has begun.
This is a group buy for a batch of PCBs produced through Drop's sources, and is expected to be delivered in December 2020. It is the same design as done previously, but with more testing. Small changes are highlighted below in bold. The group buy will run until Oct 1st.
- STM32F303 ARM MCU
- USB-C connector
- ESD protection on the USB datalines
- Dual-channel speaker using the MCU's DAC
- Kailh's hot-swappable MX sockets and solderable Matias footprint
- Metal 2.5mm standoffs that accept M2 screws
- Per-switch RGB cut-outs for future projects (no LED support otherwise)
- Compatible with previous revision case styles
- 2x2u, 1x2u, Grid support along the bottom row
- PCB-mounted stabiliser footprints
- 9x soldered-on WS2812B RGB LEDs
Footprints for add-ons to expand functionality:
- Footprint for a 4-channel DIP switch (210-4ES)
- Footprint for a 2-pin JST-PH (PRT-09749)
- Footprint for a 4-pin Qwiic (I2C) JST-SH connector (PRT-14417) making it compatible with Sparkfun’s Qwiic system
- Footprint for a clickable (worked into the matrix) rotary encoder (COM-09117, et al)
- Footprint for a 6-pin male/female header (PRT-09015 or PRT-12590, et al)