Boards by HearnChristian

3 boards

Open-source boards designed in KiCad by HearnChristian on GitHub, from 3 repositories. A board’s address here is its repository’s there.

4 layers66 × 46 mm
Radar1
HearnChristian/k-band-fmcw-radar
24 GHz FMCW radar front-end in KiCad (WIP): ADF4159 chirp synth, BGT24LTR11 transceiver, custom Marki AMM-8211PSM driver-amp symbol/footprint, OPA1656 IF, ADS8353 ADC, FT2232H USB.
99 parts3
4 layers74 × 56 mm
Atmos
HearnChristian/atmos-sense
ESP32-based atmospheric sensing node: BME280 environmental sensing and AS3935 lightning detection over I2C, designed for drone integration. KiCad hardware plus firmware.
73 parts1MIT
4 layers99.7 × 74.5 mm
Polarimeter
HearnChristian/polarimeter
4-layer KiCad photodiode polarimeter: low-noise transimpedance front-end (OPA381/OPA320), precision REF3425 reference, LT8609/LP5912 power. Schematic, PCB, gerbers + BOM.
66 parts

Radar1