The Preonic PCBs are in! These are the left over boards from the group-buy we ran earlier. Supply is limited! See https://olkb.com/blogs/news/may-update for more info.
This is a special run made by the manufacturer used for the Drop runs instead of OLKB’s usual supplier.
- 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)
- 2x2u, 1x2u, Grid support along the bottom row
- PCB-mounted stabiliser footprints
- 9 RGB Leds (WS2812B) pre-installed
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)