Parts
CPU: ESP WROOM-32
CPU: ESP WROOM-32
- Xtensa 32 bit microprocessor
- Dual core
- 160 MHz
- 448 Kb of ROM, 520 Kb SRAM
- 2x I2C & I2S
- 3 UART
- Ultra low power co-processor for sleep @ 8Mhz
- 150 mA max current draw
IMU: LSM9DS1
IMU: LSM9DS1
- IMU I.C., contains gyroscope, accelerometer, magnetometer
- Connects through I2C
- 9 Degrees of freedom
- Used to wake Cpu from low power state
- 15 mA max current draw
Final PCB
Final PCB
This finalized PCB includes the esp32 micro-processor, IMU, serial flasher, a battery charging circuit, and voltage regulator.