Descriptions: ACS712 Current Sensor Module-30A

This current sensor board is based on the Allegro ACS712ELCTR-30A bi-directional hall-effect current sensor chip that detects positive and negative flowing currents in the range of minus 30 Amps to positive 30 Amps. The board operates at 5V DC and the current flow through the sensor is converted to an output voltage starting at 1/2Vcc (or 2.5V) for no current flow and moves up 66mV per amp for positive current or down -66mV per amp for negative current.

For example:

The output voltage at +2 amps would be (2.5V + (0.066 * 2)) = 2.632 VThe output voltage at -5 amps would be (2.5V – (0.066 * 5)) = 2.170 V

Specifications:

Diagram:

Documents:

• Connection Detail
• Datasheet(ACS712)
• Sample Code– Arduino
• Useful Introduction_1 from embedded-lab
• Useful Introduction_2 from embedded-lab

Package Includes:

• 1 x ACS712 Current Sensor Module – 30A

• 30A Range ACS712 Module
• Current Sensor for Arduino
• The current sensor chips: acs712elc20a;
• Pin5 V power supply on board power indicator
• The module can measure the positive
• Negative 20 amps PCB
• Board size: 31 (mm) x13 (mm)