Changelog

🌍 Languages: English | Deutsch

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Rev. 0.3] - 2025-12-09

CAN Transceiver: 10µF capacitor C304 for improved CAN communication stability
PCB Layout: QR code placeholder for serial number on the PCB

Enhanced Signal Integrity: Additional filtering at CAN transceiver for more stable data transmission
Traceability: QR code enables unique identification and documentation

Schematic: Cleaned up and structured (Thanks to "shx")
CAN Transceiver: Silent pin connected to GND for better stability (Thanks to "shx")

Status LEDs:
- Yellow LEDs for 24V, 5V and 3.3V voltage indication
- Green LED on microcontroller (Pin PB4)
Solder Jumpers: Replaced standard jumpers with solder jumpers on bottom side
PFET Control: Added jumpers for output PFETs - enables permanent-on without firmware
Test Points: Added robust test points for 5V and GND for load testing
Heatsink: Optional heatsink for DC/DC converter on bottom side
MCU Capacitor: 10µF capacitor for microcontroller on 3.3V rail

Production: Added all LCSC part numbers, defined rotations, created production data
PCB Layout:
- Adjusted according to schematic changes
- Improved button positioning
BOM Optimized:
- Replaced 30kΩ with basic part 33kΩ
- Changed 15.5kΩ DC/DC feedback to 15kΩ → new output voltage: 5.1V
CAN ESD Protection: Replaced NUP2105L with PESD1CAN (better suited)
CAN Termination Resistor: Changed footprint from 0402 to 0603 for adequate power rating
USB Hub: Changed supply from 5V to 3.3V (per datasheet recommendation)

DC/DC Output: New voltage 5.1V instead of 5.25V due to feedback resistor change
Improved Heat Dissipation: Optional heatsink on bottom side
Stable CAN Communication: Through ESD protection upgrade and resistor optimization

Note: The original documentation is in German (CHANGELOG.de.md). This English version is a translation for international users.