{"title":"ACS37800 Qwiic Power Meter","handle":"sparkfun-power-meter-acs37800-qwiic","url":"/products/sparkfun-power-meter-acs37800-qwiic","description":"Built around the Allegro ACS37800, this Qwiic power meter lets your project monitor voltage and current at the same time over I2C. It is designed for higher-demand loads such as 3D printers, UAVs and solar panels, with voltage monitoring up to 60VDC and current sensing up to 30A.The ACS37800 uses Hall-effect current sensing rather than a shunt resistor, helping avoid the heat generation and voltage drop associated with shunt-based designs. Its galvanic isolation keeps the logic-level sensing electronics separated from the high-current path.For integration, the board connects neatly into the Qwiic ecosystem and exposes useful power data through its I2C interface. SparkFun also provides supporting documentation including a hookup guide, schematic, Eagle files, board dimensions, ACS37800 datasheet, Arduino library and hardware repository.Features:Qwiic integration: Designed to slide seamlessly into your next Qwiic project.Simultaneous monitoring: Allows you to monitor voltage and current simultaneously without cutting traces or managing complex wiring.Hall-effect current sensing: Uses Hall-effect technology to measure current.Cool Operation: Because there is no shunt resistor, there is no heat generation or voltage drop, meaning the sensor itself doesn't waste the power it is trying to measure.Galvanic Isolation: The internal construction provides reinforced isolation between the current-carrying conductor and the sensing electronics, keeping your logic-level microcontroller safe from the high-current path.Complete Data: Reads Voltage, Current, and Power simultaneously.Onboard Intelligence: Features dedicated pins for zero-crossing detection and fast overcurrent fault reporting.Configurable: You can adjust settings like over/under-voltage thresholds directly via the Qwiic interface and save them to the chip’s onboard EEPROM.Specifications:Voltage monitoring: up to 60VDCCurrent monitoring: up to 30APower monitor IC: Allegro MicroSystems ACS37800Certification: UL 60950-1 (ed. 2) and UL 62368-1 (ed. 1) certifiedIsolation: Reinforced isolation up to 517 VRMSPrimary conductor resistance: 0.85 mΩ primary conductor resistance for low power lossGround compatibility: Compatible with floating and non-floating GNDBandwidth: 1 kHz bandwidthCurrent sensing range: up to +/- 30 ADefault I2C address: 0x60I2C address configuration: I2C address can be changed and stored in EEPROMVoltage channel RMS noise: +/-0.3mVCurrent channel RMS noise: +/-0.1AVoltage channel total output error: +/-1% (-40°C to 125°C)Current channel total output error: +/-2% (25°C to 125°C)Current channel total output error: +/-2.7% (-40°C to 25°C)High current connections: Two 0.25” (6mm) through-holes for high current connectionsCurrent channel noise floor: approximately ±0.1A RMSThis board is best suited to heavier loads including motor control, battery charging, solar arrays and devices drawing less than 1 Amp. It is not intended for microcontrollers in sleep mode, single LEDs or applications requiring milliamp-level precision.","vendor":"SparkFun","product_type":"Power Meter","in_stock":true,"options":[],"variants":[{"id":15744,"title":"Default Title","sku":"SF-SEN-29259","mpn":"SEN-29259","price":39.25,"on_sale":false,"in_stock":true,"available_quantity":158}]}