Sold without pinheaders and DSUB-9 mounted (male DSUB-9 included - unsoldered)
See photo without DSUB-9 soldered.
Note: The current stock has the "female" DSUB-9 footprint, which is mirrored compared to the industry semi-standard of using a "male" footprint with CAN-low on pin 2 and CAN-high on pin 7.
If using a male DSUB-9 on a board marked as "TouCAN", just mount it on the bottom side of the PCB to get the same pinout as other CAN dongles (PEAK CAN for instance)
If you mount a male DSUB-9 on the top of the PCB, CAN-L will be on pin 4 and CAN-H will be on pin 8.
FalCAN is a compact, open-source multi-protocol interface designed to bridge your computer with real-world hardware. Built for engineers, developers, and hardware enthusiasts, it combines CAN, UART, RS-422, and RS-485 connectivity into a single, versatile tool.
Whether you're debugging automotive systems, working with industrial equipment, or reverse engineering embedded devices, FalCAN simplifies communication across multiple standards. It functions as both a USB interface and a flexible development platform, allowing you to switch between protocols or reflash firmware in seconds—no external programmer required.
The board is based on the STM32F042 microcontroller and supports native CAN via gs_usb, making it compatible with Linux out of the box. Dual RS-485 transceivers enable both RS-422 and RS-485 operation, while standard UART support ensures compatibility with a wide range of devices.
FalCAN is fully open source, with schematics, firmware, and documentation available on GitHub. It’s designed not only as a tool, but as a platform for experimentation and development.
From lab bench to field debugging, FalCAN is a reliable and adaptable companion for anyone working with embedded systems and serial communication.
Video
The probe in use across UART, CAN and RS-485 — what it can debug, and where its limits are.
