Comparison page

ACS712 vs HC-SR04

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

ACS712

Projects needing Current and Hall effect with a commonly available sensors part.

HC-SR04

Projects needing Distance and Ultrasonic with a commonly available sensors part.

Specification Matrix

DimensionACS712 HC-SR04

CategorySensorsSensors

MakerAllegro MicroSystemsGeneric

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino, MicroPython

Price$1.00 - $3.00$0.80 - $2.00

Known Tradeoffs

ACS712

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

HC-SR04

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

ACS712

Allegro MicroSystems

Hall-effect current sensor module used for AC/DC current measurement projects.

China-madeSensors76% confidence

HC-SR04

Generic

Classic ultrasonic distance sensor module used in robotics obstacle detection and beginner projects.

China-madeSensors78% confidence