JWatch

Tech Stack

This watch is entirely built from scratch. A significantly improved version of [BumWatch][BW]!

MCU: NORA-B106 (nRF5340) - Dual-core ARM Cortex-M33

Power: MCP73832 (Charger), MAX17055 Fuel Gauge, TPS7A02 (Dual-rail LDOs)

Peripherals: MAX30102 (Heartrate Sensor), BMI270 (IMU), DRV2605L (Haptics Driver), GC9A01 (1.28" Round SPI TFT)

Schematics