Matek AP_PERIPH CAN Digital Power Monitor
by Matek Systems

The Matek CAN-L4-BM is an ultra-precise digital power monitor designed for seamless integration with ArduPilot and DroneCAN protocols. Based on the INA239 85-V Power Monitor IC, this device offers exceptional accuracy for monitoring battery voltage and current in real-time, without requiring calibration. With a current sensing range of up to 204.8A and voltage sensing up to 85V, it allows for continuous monitoring of your system’s power consumption, providing vital data for battery management and power optimization. The low-resistance conductive path ensures minimal power loss, making this power monitor an essential tool for drones, robotics, and other power-sensitive applications. Its easy integration with flight controllers via DroneCAN and UART makes it ideal for users looking to efficiently monitor their system's power health.

Specifications

• MCU: STM32L431xC, 256KB Flash
• Power Monitor IC: INA239 85-V, 16-Bit High-Precision Power Monitor IC with SPI Interface
• Battery Voltage Sense Input: 0~85V
• Current Sense Range: 0~204.8A (150A Continuous, 204.8A Burst)
• Voltage Accuracy: ± 0.1%
• Current Accuracy: ± 2%
• Interface: CAN (DroneCAN Protocol), UART2 (spare, DFU), ST Debug, SWCLK & SWDIO
• Power Supply: 4.5~5.5V via 5V pad/pin
• Power Consumption: 10mA
• Operating Temperature: -40~85°C
• Board Size: 30mm x 22mm x 3mm
• Weight: 4g

Features

• LED Indicators: Blue (Fast Blinking for Booting, Slow Blinking for Operation), Red (3.3V Indicator)
• Firmware Compatibility: ArduPilot AP_Periph MatekL431-BattMon, with updates via DroneCAN GUI Tool
• Firmware Parameters:
  • CAN_P1_DRIVER = 1 (for CAN bus1)
  • CAN_P2_DRIVER = 1 (for CAN bus2)
  • BATTx_MONITOR = 8 (DroneCAN-BatteryInfo)
• Included Accessories:
  • 1x CAN-L4-BM Board
  • 1x JST-GH-4P to JST-GH-4P 20cm Silicon Wire