2 layers34 × 20.5 mm
Electret preamp
dunkelstern/electret_preamp
Electret Microphone Preamp based on Texas Instruments Single-Supply, Electret Microphone Pre-Amplifier Reference Design by John Caldwell
16 parts14
Boards by dunkelstern
4 boardsOpen-source boards designed in KiCad by dunkelstern on GitHub, from 4 repositories. A board’s address here is its repository’s there.
- 2 layers99 × 57.5 mm
Clock
dunkelstern/NightClock
Small SMD based night clock with RTC and battery/supercap backup
42 parts1BSD-3-Clause - 2 layers30.3 × 65.3 mm
Planticam sensor block
dunkelstern/planticam-sensor-block
Planticam Sensor addon-board to allow sensing with 1 Wire and analog sensors and switching external loads
39 parts - 2 layers42.2 × 65 mm
