By S21TIP
NodePilot is a compact, reliable, and isolated AllStarLink radio interface based on the CM108 audio USB chipset.
This project was designed for both personal use and small-scale production, with a focus on audio quality, RF robustness, and hardware protection.
The complete KiCad schematic, PCB (Work-in-progress), and design files are publicly available under the CC-BY-SA-4.0 license.
- Protection components added to safeguard USB audio IC.
- Prevents damage due to RF ingress, voltage spikes, and audio overload.
- Transformer-isolated audio TX/RX path.
- Eliminates ground loops and reduces hum/hiss.
- Suitable for clean interfacing with radios and repeater controllers.
- Designed to be easy to integrate with existing AllStarLink nodes.
- Works with standard USB sound cards using the CM108/CM119 chipset.
- All design files available in KiCad format.
- Licensed under Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA-4.0).
This project is released under the Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA-4.0) license.
You are free to remix, adapt, and build upon the design, even commercially, as long as you credit the author and share derivative works under the same license.
Tushar Roy – S21TIP
If you improve the design or build your own version, feel free to open an Issue or Pull Request!