Gravity: I2C Digital Wattmeter is a module of a precision digital current sensor with the INA219 system from TI. The system enables measurement of voltage, current and power of electronic modules and devices in the range up to 26V and 8A with a relative error of ± 0.2%. Communication with the module takes place via the I2C interface. The product can be used to assess energy consumption or battery life in solar energy systems, batteries, motors, controllers or electronic modules.
Sample module connection

Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Expansion board for Arduino, allows easy connection of XBee modules, has separate outputs for I2C, SPI and UART buses. The built-in 3.3V voltage stabilizer and operating mode switch make it easier to program the Arduino when the XBee module is connected to the sockets. DFRobot DFR0265
Module with INA219 system with bi-directional current meter
No product available!
Gravity: IO Expansion & Motor Driver Shield is an Arduino compatible expansion board that provides digital I / O ports, analog I2C, SPI and UART interfaces, as well as a DC motor driver. DFRobot DFR0502
Module with bi-directional current sensor based on the INA226 system. It allows you to measure current and power, works with a voltage of 0-36 V. It has an I2C interface.
A digital precision current sensor module that measures voltage, current and power of electronic modules and devices up to 26V and 8A with a relative error of ± 0.2%. DFRobot SEN0291
ACS711EX Current Sensor Carrier -31A to +31A
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The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5272
The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5243
ACS723 current sensor module with a DC and AC measuring range of ± 5 A. It can read very low currents of 10 mA. It communicates via the analog interface. SparkFun SEN-14544
No product available!
No product available!
This board is a simple carrier of Broadcom’s bidirectional ±50A ACHS-7125 Hall effect-based linear current sensor, which offers a low-resistance (~0.7 mΩ) current path and electrical isolation up to 3 kV RMS. Pololu 4034
Module with INA228 sensor designed for power monitoring. It allows you to measure voltages up to 85 VDC and currents up to 10 A. It uses a 20-bit ADC converter, which guarantees very precise and accurate measurements available via the I2C bus. Adafruit 58332
Precision Hall effect current sensor offering galvanic isolation, wide 150 kHz bandwidth and the ability to measure AC and DC current with very low power loss. With differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5290
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A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5445
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5253
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5447
No product available!
ACS724LLCTR-30AB current sensor module with a DC and AC measurement range from -30 to +30 A. It communicates via an analog interface. Pololu 4047
A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and its low current path resistance (~1.6 mΩ) minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5451
No product available!
The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5270
A modern current sensor with a measurement range of -40 A to +40 A, combining the Hall effect with an inductor, allows for precise measurements of both DC and AC components up to 5 MHz. Its lightning-fast response time and low path resistance make it ideal for motor control systems, power converters, and protection systems. Pololu 5231
Compact current sensor based on TMR technology, enabling precise measurements up to 30 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5305
A digital precision current sensor module that measures voltage, current and power of electronic modules and devices up to 26V and 8A with a relative error of ± 0.2%. DFRobot SEN0291