MATEKSYS AP_PERIPH CAN DIGITAL POWER MONITOR, CAN-L4-BM

About this product

• 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)

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.