# [Matek] 마텍 AP-Periph CAN Digital Power Monitor (CAN-L4-BM)

- 상품번호: 100092091
- 주소: https://www.falconshop.co.kr/shop/goods/goods_view.php?goodsno=100092091
- 가격: 52,000원
- 재고: 없음 (품절)
- 브랜드: Matek

## 분류

- 드론 (멀티콥터) > 드론 비행 컨트롤러 > 픽스호크 산업/연구용 비행 컨트롤러 > 마텍 Matek

## 요약

디지털 파워 모듈, 0~85V, 0~150A (Max 200A)

## 설명

**Matek **  **AP_Periph DroneCAN Digital Power Monitor, CAN-L4-BM**

구성

CAN-L4-BM 보드 1개

JST-GH-4P ~ JST-GH-4P 20cm 실리콘 와이어 1개

Due to limitations by AP_Periph firmware, the fw AP_Periph V1.7.0 and older do not support current readings greater than 90A.

**You can update the fw to latest** . then set AP_Periph parameters  **BATT_MAX_AMPS = 204.8 and BATT_SHUNT = 0.0002.**

https://github.com/ArduPilot/ardupilot/pull/26465

- CAN-L4-BM is a ultra-precise digital power monitor based on TI INA239 & ArudPilot AP_Periph firmware.
- The resistance of this conductive path is 200 μΩ typical, providing low power loss in the application.
- With this device, No calibration required, flight controller that support DroneCAN protocol can easily get accurate current & bus voltage readouts via CAN bus.

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

UART2, 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

Physical

Board Size: 30mm*22mm*3mm.  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)

BATTx_OPTIONS = 1

Packing

1x CAN-L4-BM board

1x JST-GH-4P to JST-GH-4P 20cm silicon wire

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.

## 이미지

- https://www.falconshop.co.kr/shop/data/goods/fm100092091_1792211201.jpg
- https://www.susungrc.com/web/upload/NNEditor/20250807/CAN-L4-BM_5.jpg
- https://www.susungrc.com/web/upload/NNEditor/20250807/CAN-L4-BM_6.jpg
- https://www.susungrc.com/web/upload/NNEditor/20250807/CAN-L4-BM_7.jpg