Entropy started as a STM32 powered keyboard running QMK and enclosed in a FR4 and PLA case, but at the time of writing runs on a nRF52 and ZMK, tucked inside a stacked acrylic case.
ZMK enables wireless functionality, and you'll get upwards of 6 months battery life thanks to the 200uA sleep current.
It also supports up to 4 rotary incoders in 5 different positions, along with a myriad of layout options.
Supports Encoders in (0,0)...(0,3) and (0,19)
ZMK versions only allow 4 encoders to be populated (hiting interrupt limit with 5 encoders)
R0.1:
- Original STM32 design, no bugs that can't be worked around.
- Tested and working.
R0.2:
- Removed overengineering, modified to suit JLCSMT.
- Fixed plate 2U tight fit.
- Has known issues with powering the LEDs, do not use
R0.3:
- Moved to nRF52840 and ZMK due to supply issues with the STM32F303 used in R0.1 and R0.2.
- Case design changed to plate mount in stacked acrylic case.
- Design moved to KiCad V6.
R0.4:
- Battery life and design improvements over R0.3.
- Few issues requiring rework but suitable for use.
R0.5:
- Resolved issues found in R0.4, however untested.
- Use at your own risk.