{
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  "path": "/2026/05/07/falcan-probe-open-source-stm32-based-usb-to-can-adapter-rs485-rs422/",
  "publishedAt": "2026-05-07T09:13:29.000Z",
  "site": "https://www.cnx-software.com",
  "tags": [
    "Hardware",
    "STMicro STM32",
    "Video",
    "can",
    "debugging",
    "firmware",
    "kicad",
    "open source",
    "rs485",
    "stm32",
    "tools",
    "usb",
    "FalCAN Probe is an open-source, STM32-based USB to CAN/RS-485/RS-422 adapter",
    "CNX Software - Embedded Systems News"
  ],
  "textContent": "Most USB-to-bus adapters, including tools like CANTact Pro or MeatPi’s Ollie V1 and V2, typically support either CAN or RS-485/RS-422 as fixed-function serial devices. In contrast, the FalCAN Probe by Anders B. Nielsen is a multi-protocol USB adapter based on the STM32F042 microcontroller. The FalCAN Probe is a compact open-source USB Type-C board that connects a computer to CAN, RS-485, and full-duplex RS-422 networks. Instead of using a fixed USB bridge, it exposes the MCU’s native USB interface along with SWD and GPIOs, and can also be used as a small Arm Cortex-M0 development platform. FalCAN Probe specifications: MCU – STMicro STM32F042C6Tx Arm Cortex-M0 microcontroller @ 48 MHz with 32KB flash, 6KB SRAM Host Interface – USB 2.0 Full Speed via USB Type-C port Interfaces (non-isolated) CAN bus via Texas Instruments SN65HVD230 transceiver; enumerates as a GS_USB CAN device when jumper JP4 is open RS485 and full-duplex RS422 via dual [...]\n\nThe post FalCAN Probe is an open-source, STM32-based USB to CAN/RS-485/RS-422 adapter appeared first on CNX Software - Embedded Systems News.",
  "title": "FalCAN Probe is an open-source, STM32-based USB to CAN/RS-485/RS-422 adapter"
}