Galvanic Isolation, Self-Powered: Isolator breaks USB-CAN path. Onboard DC-DC supplies isolated 5V & GND—no external supply. No ground loops; bus faults stay contained. Pin 3 is isolated GND—do not connect to PC GND. Open Hardware, Published: SH-C30G from CANable—we publish back. Schematic & PCB on GitHub (dsdtech-official) as editable files under CERN-OHL-S-2.0, plus firmware. Inspect, modify, build your own. Open Protocols: Ships with candleLight (gs_usb)—Linux kernel driver built-in, appears as SocketCAN, nothing to install. Works with cangaroo, can-utils, python-can. Supports CAN 2.0A/B up to 1Mbit/s. Built for Real Bus: 4-pin 5.0mm terminal—CAN_L, CAN_H, isolated GND, isolated +5V (powers small node). Built-in 120Ω termination (disable if bus has two). Each line has fuse & TVS clamp. New Firmware, Free: Stock ignores 24MHz crystal. Our build uses it and lights TX/RX LEDs. Sep 2026 units ship with it; earlier update over USB—free & optional.
We'd like to share an important update: Our SH-C30G has officially been open-sourced on GitHub.
This project is licensed under the CERN-OHL-S-2.0 license (a strong, reciprocal open-source license that allows commercial use but requires derivative works to be released under the same license). You can access the full source code at the following link. We welcome you to try it out and provide your valuable feedback.
GitHub link:https://github.com/dsdtech-official/can-adapters/tree/main/SH-C30G
3. Schematic.pdf
Specification:
Model NO: SH-C30G
Main chip: STM32F072C8T6
Standard : CAN BUS
Interface: USB Type B ,4 PIN Terminal Block
Cable Length: 1.0M/3.2FT
Based on Canable 1.0
CAN PIN: CAN_H,CAN_L,GND
Compatibility: Windows 10,8,7,Linux,Mac OS
Supports CAN2.0 A and B
Packing list:
1 X SH-C30G USB to CAN
1 X User manual
1 X USB Type B Cable(1M/3.2FT)
We'd like to share an important update: Our SH-C30G has officially been open-sourced on GitHub.
This project is licensed under the CERN-OHL-S-2.0 license (a strong, reciprocal open-source license that allows commercial use but requires derivative works to be released under the same license). You can access the full source code at the following link. We welcome you to try it out and provide your valuable feedback.
GitHub link:https://github.com/dsdtech-official/can-adapters/tree/main/SH-C30G
3. Schematic.pdf
Specification:
Model NO: SH-C30G
Main chip: STM32F072C8T6
Standard : CAN BUS
Interface: USB Type B ,4 PIN Terminal Block
Cable Length: 1.0M/3.2FT
Based on Canable 1.0
CAN PIN: CAN_H,CAN_L,GND
Compatibility: Windows 10,8,7,Linux,Mac OS
Supports CAN2.0 A and B
Packing list:
1 X SH-C30G USB to CAN
1 X User manual
1 X USB Type B Cable(1M/3.2FT)
