Description Unit INA226-1A is a fully isolated high-precision current, voltage, and power measurement unit for DC electrical parameter acquisition. It is designed for measuring DC 0-30V voltage and up to +/-1A bidirectional current. The unit uses the INA226 high-precision bidirectional current and power monitor IC. Through the I2C communication interface, a host controller can read current, voltage, and power values from Unit INA226-1A across multiple M5Stack-compatible development platforms. For measurement safety and noise resistance, the module integrates an isolated power module and an I2C signal isolator, creating electrical isolation between the measurement side and the main control side. Notes The module includes a self-resetting fuse. When the current range is exceeded, the fuse can trip automatically to help protect equipment and personnel. Features High-precision monitoring: integrated INA226 16-bit current and power monitor for voltage, current, and power measurement. 1A bidirectional current range: Unit INA226-1A supports +/-1A bidirectional current measurement. Wide voltage input: supports DC 0-30V voltage detection for common power rails and DC loads. I2C interface: communicates over I2C at address 0x41 for controller-side data acquisition. Electrical isolation: isolated power and signal paths separate the measurement side from the host control side. Safety protection: self-resetting fuse protection helps reduce risk when the current range is exceeded. Development support: Arduino tutorial, Arduino test program, and Home Assistant integration are available. Specifications Power Detection IC INA226, high-precision bidirectional current / power monitoring IC Voltage Detection Range DC 0-30V Current Detection Range +/-1A, bidirectional current measurement Communication Interface I2C @0x41 Operating Current DC 5.01V @ 16.55mA Product Size 58.0 x 24.0 x 10.2mm Product Weight 8.5g Package Size 138.0 x 93.0 x 11.2mm Gross Weight 16.7g Applications Power monitoring for DC systems and M5Stack controller projects. Power consumption analysis for prototypes, modules, and low-current connected loads. Motor control current feedback within the supported +/-1A range. Battery, adapter, and DC rail observation where isolated measurement is useful. Home Assistant telemetry projects that need voltage, current, and power data from Unit INA226-1A. Product List 1 x Unit INA226-1A 1 x HY2.0-4P Grove Cable (20cm) 1 x HT3.96-4P Terminal Other Content Product Comparison Model Current Range Shunt Resistor Current Resolution Unit INA226-1A +/-1A bidirectional current 80mOhm 32uA Unit INA226-10A +/-10A bidirectional current 5mOhm 0.32mA Unit INA226-1A is the finer low-current option in the INA226 unit family. Choose it when the project needs the +/-1A range and finer current resolution instead of the wider 10A range. The schematic, model size PDF, structure files, INA226 datasheet, Arduino resources, and Home Assistant integration are provided in Resources for development and mechanical integration. Resources Unit INA226-1A product document Unit INA226-1A schematic PDF Unit INA226-1A model size PDF Mechanical structure files for the 1A power monitor unit INA226 current and power monitor datasheet Arduino tutorial for Unit INA226 1A and 10A Arduino test program for INA226 power monitoring Home Assistant integration for INA226 10A and 1A telemetry Unit INA226-1A documentation PDF FAQ What does Unit INA226-1A measure? Unit INA226-1A measures voltage, bidirectional current, and power through the INA226 monitor IC. What current range does it support? It supports +/-1A bidirectional current measurement. What voltage range does it support? The voltage detection range is DC 0-30V. Which interface does it use? The module uses I2C communication at address 0x41. How is it different from Unit INA226-10A? Unit INA226-1A is designed for the finer +/-1A range with 32uA current resolution, while Unit INA226-10A is intended for higher-current +/-10A measurement.
Related
Related
Related
Related