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Matek Ultra-Precise 12C Power Monitor 12C-INA-BM
- I2C-INA-BM is an ultra-precise digital power monitor based on TI INA228.
- The resistance of this conductive path is 200 μΩ typical, providing low power loss in the application.
- Support 3x I2C-INA-BM on one I2C bus in parallel.
- No calibration required, Flight controller with ArduPilot fw can easily get accurate current & bus voltage readouts via I2C bus.
Specifications
- INA228 85-V, 20-Bit, Ultra-Precise Power monitor IC With I2C 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: I2C (Decimalism Address 69 by default, 68 and 65 options)
- Power supply for I2C-INA-BM board : 4~9V @5V pad/pin
- Power consumption: 1mA
- LED Red, 3.3V indicator
- Operating Temperatures: -40~125 °C
- Physical
- Board Size: 27mm*20mm*6mm. 4g
- 3D file : I2C-INA-BM_STEP.zip
- Parameters
- BATT*_MONITOR ->21 (INA2XX)
- BATT*_I2C_ADDR -> 0 (or 69, 68, 65)
- BATT*_I2C_BUS -> 0/1/2 , depends on the FC I2C bus connected
- BATT*_SHUNT -> 0.0002
- BATT*_MAX_AMPS -> 204.8
Packing
- 1x I2C-INA-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.
- Compatible with ArduPilot firmware only now.
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