MATEKSYS I2C-INA-BM Ultra Precise I2C Power Monitor Board (TI INA228, 0-85V, 0-204.8A)

Name: MATEKSYS I2C-INA-BM Ultra Precise I2C Power Monitor Board (TI INA228, 0-85V, 0-204.8A)
Brand: MATEKSYS
SKU: 12C-INA-BM
Price: 29.00 USD
Availability: InStock

MATEKSYS I2C-INA-BM Ultra Precise I2C Power Monitor Board (TI INA228, 0-85V, 0-204.8A)

MATEKSYS

$29.00 USD

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Overview

The MATEKSYS I2C-INA-BM is an ultra-precise digital power monitor board based on the TI INA228 IC. It monitors battery (bus) voltage and current via the I2C interface, with a 200 uOhm typical conductive path resistance for low power loss. It supports up to 3 boards on one I2C bus in parallel and is designed for use with ArduPilot firmware (no calibration required).

Key Features

Based on TI 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 (150A continuous, 204.8A burst)
Voltage accuracy: ±0.1%; current accuracy: ±2%
Supports 3x boards on one I2C bus in parallel (I2C address options shown on board: default 69, options 68 and 65)
Compact size: 27mm x 20mm x 6mm; weight: 4g; mounting hole: phi 3mm

Specifications

Model	I2C-INA-BM
IC	TI INA228 (85-V, 20-bit)
Interface	I2C
I2C address	Default 69; options 68, 65 (as marked on board)
Battery voltage sense input	0~85V
Current sense range	0~204.8A
Load current on sensing resistor	150A (Continuous), 204.8A (Burst)
Voltage accuracy	±0.1%
Current accuracy	±2%
Conductive path resistance	200 uOhm (typical)
Board power supply	4~9V @ 5V pad/pin
Power consumption	1mA
Indicator	LED Red, 3.3V indicator
Operating temperatures	-40~125 °C
Board size	27mm x 20mm x 6mm
Weight	4g
Mounting hole	phi 3mm
Connector marking (as shown)	JST-GH-4P; pins labeled 5V / SCL / SDA / G (order depends on side)

Configuration (ArduPilot)

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

Multiple-board setup example (as shown): BATT1_I2C_ADDR -> 69; BATT2_I2C_ADDR -> 68; BATT3_I2C_ADDR -> 65.

Applications

Battery voltage and current monitoring for RC planes, drones, and other battery-powered devices
Single-battery systems (common ground between controller and ESC/load)
Two-battery systems (add a ground wire between I2C-INA-BM and BATT-1, as shown)
Multi-sensor I2C installations (up to 3 boards in parallel)

What's Included

1x I2C-INA-BM board
1x JST-GH-4P to JST-GH-4P 20cm silicon wire

Note (as shown): silicon wires and XT60 connectors are not included in package.

Installation Notes

The big pad on the bottom side is a dead pad (no circuit network).
Solder the positive wires as close as possible to both sides of the current sensing resistor.
Compatible with ArduPilot firmware only now.

Customer service: support@rcdrone.top or https://rcdrone.top/

Documents

3D file: I2C-INA-BM_STEP.zip

Details

MATEKSYS I2C-INA-BM I2C power monitor board with FL200 shunt, JST-GH 4-pin ports, 27×20mm

The MATEKSYS I2C-INA-BM power monitor uses JST-GH 4-pin I2C connectors and onboard pads for selecting the I2C address (default 69/68/65).

MATEKSYS I2C power monitor board inline between battery and ESC with I2C pads and XT60 lead example

The I2C power monitor board installs inline between BAT+ and ESC+ and provides 5V, GND, SDA, SCL and ADDR pads for easy flight-controller wiring (silicone wires and XT60 connectors not included).