ACS712 Low Current Sensor Hookup Guide
This Tutorial is Retired!
Note: This tutorial is for the ACS712 Current Sensor Breakout Boards. If you are using either of the newer ACS723 Breakout Boards, please refer to the new Current Sensor Breakout (ACS723) Hookup Guide.
View the updated tutorial: Current Sensor Breakout (ACS723) Hookup Guide
Contributors:
AGlass0fMilk
AGlass0fMilk Resources and Going Further
The ACS712 sensor is ideal if you need to measure a small to moderate amount of current, especially if it's AC current! For more information about the ACS712, check out the links below:
- ACS712 Datasheet
- SparkFun Hall-Effect Current Sensor Breakout - ACS712
- SparkFun Low Current Sensor Breakout - ACS712
If you don't need electrical isolation and want to measure smaller currents, check out the INA169 Breakout Board. And for even higher power applications, check out the Non-Invasive Current Sensor - 30A.
For more power related learning, check out the tutorials below:
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Learn how to assemble and use the TL431 in the Uh-Oh Battery Level Indicator Kit.
Benchtop Power Board Kit Hookup Guide
Need more power? This Benchtop ATX Power Supply Kit should help give you the boost you need to power those energy hungry projects.
Powering LilyPad LED Projects
Learn how to calculate how many LEDs your LilyPad project can power and how long it will last.
Single Supply Logic Level Converter Hookup Guide
The Single Supply Logic Converter allows you to bi-directionally translate signals from a 5V or 3.3V microcontroller without the need for a second power supply! The board provides an output for both 5V and 3.3V to power your sensors. It is equipped with a PTH resistor footprint for the option to adjust the voltage regulator on the low side of the TXB0104 for 2.5V or 1.8V devices.