Waveshare 22773 USB to CAN Adapter Dual-Channel CAN Analyzer

Specifications

• Model SKU: Waveshare 22773
• Number of Channels: 2 Independent Channels (CAN1 and CAN2)
• USB Interface: USB 2.0 Full Speed (USB Type-B connector)
• CAN Protocols Supported: CAN 2.0A (Standard Frame), CAN 2.0B (Extended Frame), CANOpen, SAE J1939, ISO 15765
• Baud Rate Range: 10 kbps to 1 Mbps (Independently configurable per channel)
• Galvanic Isolation: 2500V DC optical isolation between USB and CAN buses
• Termination Resistors: On-board 120Ω termination resistors (Enabled via DIP switches)
• Status LEDs: Independent TX/RX and Power indicator LEDs for each channel
• Operating Voltage: 5V DC (Powered directly via USB port)
• Operating Temperature: -40°C to 85°C (Industrial Grade)
• Enclosure: Rugged aluminum alloy case with mounting tabs

Applications

• Automotive ECU & OBD-II Diagnostics: Sniffing, decoding, and reverse-engineering vehicle network signals across real-time drivetrains and infotainment buses simultaneously.
• AGV & Mobile Robotics Fleet Control: Bridging high-level ROS 2 navigation computers to motor controllers and power management units running CANOpen or J1939.
• Solar & Energy Storage Monitoring: Interfacing PLCs or industrial IPCs with high-voltage battery management systems (BMS) and grid-tied inverters.
• Industrial Automated Test Equipment (ATE): Simultaneous end-of-line verification and flashing of dual CAN node products.

Unlock New Capabilities

• Where You Started (Prerequisites): You used basic Arduino MCP2515 shields or single-channel CANable dongles that lacked hardware isolation, struggled with high bus load (>80%), and couldn't monitor two separate buses at once.
• What This Unlocks: Moving to the Waveshare 22773 dual-channel analyzer allows you to log, filter, and bridge two isolated CAN networks in real-time. You can analyze latency between ingress and egress packets, inject diagnostic requests, and stream high-bandwidth telemetry straight into Python or C++ software.
• Execution Effort & Requirements: Intermediate to Advanced. Requires a Windows PC (for Waveshare CAN Host software) or Linux machine (SocketCAN support). Basic terminal proficiency and knowledge of CAN bitrates are recommended.

Package Includes:

• 1 x Waveshare 22773 USB to CAN Adapter Dual-Channel CAN Analyzer

Frequently Asked Questions (FAQ)

• How many CAN channels does the Waveshare 22773 support?
  It features two completely independent, optically isolated CAN channels (CAN1 and CAN2).
• Does the adapter require an external power supply?
  No, it is fully bus-powered directly through the host PC's USB connection.
• What is the maximum baud rate supported per channel?
  It supports communication speeds from 10 kbps up to 1 Mbps on both channels independently.
• Is this CAN analyzer galvanically isolated?
  Yes, it incorporates 2500V DC optical isolation between the USB host and the dual CAN channels to protect connected hardware.
• Does it support standard CAN 2.0A and extended CAN 2.0B frames?
  Yes, it natively handles both 11-bit standard frames (CAN 2.0A) and 29-bit extended frames (CAN 2.0B).
• Can I use both CAN channels at different baud rates simultaneously?
  Yes, CAN1 and CAN2 can be configured independently with different bitrates and filtering rules.
• Does the board have built-in 120-ohm termination resistors?
  Yes, each channel features an on-board 120Ω terminal resistor toggled via dedicated DIP switches.
• Which operating systems are supported by the Waveshare 22773?
  It supports Windows (7, 8, 10, 11) and Linux systems (including Raspberry Pi OS).
• Can I write custom Python applications to interact with this analyzer?
  Yes, Waveshare provides secondary development API libraries and Python code examples for custom GUI or logging scripts.
• Does it support standard high-level protocols like J1939 and CANopen?
  Yes, the hardware can transmit and parse raw frames used by CANopen, SAE J1939, and ISO 15765 protocols.
• What software is included for monitoring CAN data?
  Waveshare provides a dedicated USB-CAN debugging software for real-time frame viewing, packet filtering, and data transmission.
• Is this device compatible with Linux SocketCAN?
  Yes, it can be attached using standard Linux USB serial / slcan utilities for SocketCAN compatibility.
• What enclosure material is used for the Waveshare 22773?
  It comes housed in a durable aluminum alloy metallic case designed for harsh industrial noise environments.
• How are status and activity indicated on the board?
  Each channel has dedicated LEDs for Power (PWR), Transmit (TX), and Receive (RX) activity.