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DSD TECH SH-C31G Isolated USB to CAN Adapter with FD Support Based on Canable 2.0 Pro - Galvanic Isolation, Powered by Itself: A digital isolator breaks the signal path between the USB side and the CAN side, and an on-board DC-DC converter gives the CAN side its own 5 V and its own ground. Nothing external is needed to make the isolation work — no separate supply, no ground loop, and a fault on the vehicle bus stays on the vehicle bus. Terminal pin 3 is that isolated ground; do not tie it to your PC's ground.
- Open Source Hardware, Actually Published: We do not only build on open hardware — we publish our own design back. The full schematic and PCB layout for this exact board are on our GitHub (dsdtech-official) as editable design files, not pictures, under the CERN-OHL-S-2.0 licence, together with the firmware images. Every claim above is in that schematic. Go and check it.
- CAN FD at Full Speed, Out of the Box: No reflashing, no serial port, no separate mode to switch into — the candleLight build fitted at the factory carries CAN FD over the same gs_usb interface as classic CAN, at data rates up to 5 Mbit/s with 64-byte frames. Same microcontroller and same firmware as our SH-C31A, tested on this board with the isolation in circuit. Units produced from September 2026 ship with our current build, v1.4.
- Built for a Real Bus: A 4-pin 5.0 mm screw terminal instead of jumper wires — CAN_L, CAN_H, isolated ground, and isolated +5 V that can feed a small node on the bus side. A 120 ohm termination switch is built in, so you can switch it off on a bus that already has two. Each CAN line runs through a resettable fuse and a TVS clamp, and the USB side has one of its own.
- About DSD TECH: Established in 2010, DSD TECH specializes in industrial connectivity solutions, delivering 80+ products (USB/RS232/UART/RS485/CAN) to 100,000+ global clients across automation and communication sectors. Every device comes with lifetime support and 1 year product replacement service.
DSD TECH SH-C31G Isolated USB to CAN FD Adapter: An industrial-grade adapter featuring dual signal/power isolation for noisy environments. Supports CAN FD (after firmware flash) and legacy CAN 2.0A/B protocols. Plug-and-play with USB Type-B and terminal block. Cross-platform compatible (Windows/Linux/macOS). Based on the open-source Canable 2.0 design. Ideal for automotive, industrial, and robotics applications. Shipping All U.S. orders include complimentary shipping, and free shipping is also available to select international locations(see the Shipping section of the listing for destination-specific details). The stated handling time appears at the top of the listing page. Orders are shipped via major carriers based on the most appropriate service for the shipment. Storepickup is currently not offered. Where applicable, combined international shipping options may be provided.
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