Key-B keyboard

ZMK based wireless half keyboard

Remember to attribute: https://github.com/daprice/keyswitches.pretty/tree/master

Attribute the Fanstel module footprint and symbols to: https://github.com/hemalchevli/Fanstel-kicad-library

Battery

• Big Option
  • JST Connector (PH). Digikey Link
• Slightly smaller option
• Charging current
  • std 0.2C, max. 1C. (60mA to 300mA)

BOM

• Premade digikey cart: https://www.digikey.fr/short/4dtv58d8

References

Crystal oscillator design

• General nRF crystal design guidelines
• nRF52840 reference circuit
  • They recommend a 9pF crystal for the 32.768kHz crystal
• Nordic White paper on Crystal oscillator design Note, there is a correction of this white paper on the first link in this section.