This is the repository containing the KiCAD EDA files for the NerMo 2025 version.
All Documentation could be found in the Schematics.
The electronics stack consists of two PCB.
The first main PCB is the main EPS PCB. It contains most of the components including DCDC for 5V, 6V, 3V3, connection to Raspberry Zero 2W, power switch and power indication LED, as well as onboard power monitoring for all three voltage bus via the INA3221, onboard MPU6050 with external connection option, as well as connector to the PWM Driver PCB.
- The PCB IBOM can be found here: IBOM Link
- The PCB Schematics can be found here: Schematics Link
The second PCB is the PWM Driver PCB. It contains the PCA9685 PWM Driver IC as well as connection for PWM servo motors.
- The PCB IBOM can be found here: IBOM Link
- The PCB Schematics can be found here: Schematics Link
V0.1: Initial Design
- Implementation of the EPS PCB
V0.2: Prototype I
- Extracted PWM Servo Driver to its own PCB
- Rearranged Connector Layout
V0.3: Prototype II
- Fixed raspberry pi zero connector hole size
- Fixed DCDC power connection
- Fixed power switch MOSFET
- Transition to 4 Layer PCB