Matek AP Peripher CAN L4 BM Digitaler Leistungsmonitor
Matek AP Peripher CAN L4 BM Digitaler Leistungsmonitor
Matek AP Peripheriegerät CAN L4 BM Leistungsmonitor
Matek AP Peripheriegerät L4 BM

NeuMatek AP_Periph CAN-L4-BM Digitaler Leistungsmonitor

About  Matek AP_Periph CAN-L4-BM CAN Digital Power Monitor

The Matek AP_Periph CAN-L4-BM CAN Digital Power Monitor offers ultra-precise monitoring for your drone needs. It features a low-power resistant path of 200μΩ, providing high efficiency in power consumption. No calibration is required and DroneCAN protocol offers convenient current & bus voltage readouts. Enjoy precision monitoring and convenience with the AP_Periph CAN CAN-L4-BM.

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Matek AP Peripher CAN L4 BM Digitaler Leistungsmonitor
CAN L4 BM
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Top-Highlights
Built with TI INA239 and STM32L431 running ArduPilot AP_Periph firmware, it delivers accurate real-time voltage and current data over CAN without analog calibration.
Supports up to 0–85V input voltage and 0–204.8A current sensing (approx. 150A continuous), suitable for FPV, multirotor, and medium-to-large UAV power systems.
Uses DroneCAN protocol for direct communication with flight controllers, ensuring stable data transmission with strong anti-interference performance.
Features ultra-low resistance (approx. 200μΩ) current path design, with voltage accuracy of ±0.1% and current accuracy of ±2% for professional-grade telemetry.
Ultra-compact size (approx. 30×22×3mm) and only ~4g weight. Powered by 5V (4.5–5.5V range) with DFU firmware upgrade support for ArduPilot ecosystems.
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Tips

● The big pad on the bottom side is a dead pad. No any circuit network on it.

● Solder the positive wires as close as possible to both sides of the current sensing resistor.

● 2 ears for mounting can be cut off if you don’t need it.

● If the CAN wires are too long, bridge the “120R” jumper.


CAN L4 BM Wiring 1

Specifications

● MCU: STM32L431xC, 256KB Flash

● 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

● Load current on current sensing resistor: 150A(Continuous), 204.8A(Burst)

● Voltage accuracy: ± 0.1%

● Current accuracy: ± 2%

● Interface: CAN, DroneCAN Protocol, U-ART2, spare, DFU, -ST debug, SWCLK & SWDIO

● LED: Blue, (Fast blinking, Booting), Blue, (Slow blinking, working) Red, (3.3V indicator)

● Power supply for CAN-L4-BM board: 4.5~5.5V @5V pad/pin

● Power consumption: 10mA

● Operating Temperatures: -40~85 °C
Board Size: 30mm x 22mm x 3mm.

● Weight: 4g

● 3D file: CAN-L4-BM_STEP.zip

● Firmware: ArduPilot AP_Periph  MatekL431-BattMon

● Update: via DroneCAN GUI Tool

● Parameters: CAN_P1_DRIVER = 1 if attached to CAN bus1 port or CAN_P2_DRIVER = 1 if attached to CAN bus2 port, BATTx_MONITOR = 8 (DroneCAN-BatteryInfo)


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