Elecrow
ACS712 Current Sensor- 5A
The ACS712 Current Sensor (5A) provides a simple way to measure AC or DC current up to ±5A. Based on the Allegro ACS712 Hall effect sensor, this module outpu...
The ACS712 Current Sensor (5A) provides a simple way to measure AC or DC current up to ±5A. Based on the Allegro ACS712 Hall effect sensor, this module outputs a proportional analogue voltage that can be read directly by an Arduino or other microcontroller via an analogue input pin.
With its low-resistance current path and electrical isolation, the ACS712 is well suited for over-current protection circuits, battery chargers, switching-mode power supplies, digital watt meters, and programmable current sources.
Key Features
- ±5A Measurement Range – Detects both AC and DC current up to 5A
- Analogue Output – 185 mV/A sensitivity for straightforward ADC readings
- Hall Effect Sensing – Non-intrusive measurement with electrical isolation
- Low Resistance – Minimal impact on the circuit being measured
- 5V Compatible – Operates from 4.5V to 5.5V supply
Specifications
- Supply Voltage: 4.5V – 5.5V DC
- Measurement Range: -5A to +5A
- Sensitivity: 180 – 190 mV/A (typical 185 mV/A)
- Sensor IC: ACS712ELCTR-05B-T
Also Available
- ACS712 Current Sensor – 20A
- ACS711EX Current Sensor Carrier – ±31A
- ACS714 Current Sensor Carrier – ±5A
- ACS724 Current Sensor Carrier – ±50A
- SparkFun Low Current Sensor Breakout – ACS712
Ideal For
- Over-current protection circuits
- Battery chargers and monitoring systems
- Digital watt meters and power monitors
- Switching-mode power supply feedback
- Arduino and microcontroller current sensing projects
Package Contents
- 1× ACS712 Current Sensor Module (5A)
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
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Sensors & Input
Related Tutorials
Free guides on learn.littlebird.com.au
