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  • Type: COM
  • Config name: FQ
  • Compulab part number: FT.Q_CAN
  • Interface: COM
  • TRIP: 2,3,4,5,6,7,7B,8,9
  • Stacking: A, C
  • Features: TEL-CANBUS provides a CANbus interface with isolation through a DB-9 connector

TEL-CANBUS front.png


  • Single CAN device using DB9 connector
  • Supports CAN 2.0A Specifications and ISO 11898-2
  • Bit rate of up to 1Mbit/s
  • Isolation per UL 1577
  • Transient immunity: 30kV/uS, isolated DC 5V power
  • CANbus is driven by a dedicated 32bit microcontroller (ARM Cortex M0 - STM32F042C6) running open source firmware that can be upgraded
  • Driverless operation in Windows
  • USB native device in Linux
  • Over 10 ports can be installed
  • Isolated DC 5V power
  • Ambient Operation from –40°C to 85°C.

Electrical and environmental

  • Isolation per UL 1577
  • Transient immunity: 30kV/uS.
  • Isolated DC 5V power
  • Ambient Operation from –40°C to 85°C.


  • Two Code implementations in one device switchable by a DIP Switch.
  • Default CANable USB CDC implementation & candleLight USB device implementation.
  • DIP switch for enabling/disabling on-board 120 Ohm termination
  • Upgradeable using build-in MCU bootloader and openly available tools. (Please follow update guide in GitHub)

Open source hardware and software

  • Complete hardware design files are available
  • Complete firmware is available
  • Designed for Hacking - Easily scriptable Python SW library for easy and cross-platform communication to the device

Block diagram

TEL-CANBUS Rev.1.0 block Diagram.jpg

Connector Pinout

TEL-CANBUS connector pinout.png

Production files





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