Last updated: October 2025. Specifications refer to the public datasheet C3E-MB-V4-R2.3.
Before ordering, verify that your firmware BSP (Board Support Package) includes the device tree overlay for the V4’s new ADC reference voltage chip. V3 firmware will run, but analog accuracy will drop from 12-bit to 10-bit effective. c3e-mb-pcb-v4
Until then, the revision remains the goldilocks choice: not as buggy as the V1/V2 prototypes, and not as experimental as the unreleased V5. Its blend of traditional screw-terminal I/O with modern high-speed serial buses makes it a versatile workhorse. Summary for Engineers If your project requires deterministic real-time control, galvanically isolated communication, and a PCB that has been proven through four revision cycles, the C3E-MB-PCB-V4 is a low-risk, high-reward foundation. Ensure you download the V4.2 errata sheet from your distributor to account for the swapped I2C pull-up resistors on address 0x68. Last updated: October 2025