ACS712 Current Meter

File:TArduinoACS712CurrentMeter.png

Summary

Measures electrical current using the ACS712 hall-effect current sensor.

Description

The **ACS712 Current Meter** component provides current measurement based on the Allegro ACS712 sensor IC. It can be configured for different ranges (5A, 20A, or 30A), with support for voltage reference adjustment and zero offset calibration. The component supports calibration through configurable operations, such as **Calibrate Samples** or **Calibrate Period**, to improve measurement accuracy.

Diagram:

Properties

• Enabled – Enables or disables the sensor.
• Operations – Opens a configuration window to add operations like **Calibrate Samples** and **Calibrate Period**.
• Range (A) – Selectable measurement range (5A, 20A, 30A).
• Voltage Reference – Defines the reference voltage:
  • Enabled – Use an external or user-defined reference.
  • Value – Reference voltage value (default = 5V).
• Zero Offset – Offset adjustment to calibrate the sensor’s baseline reading.

Pins

Input Pins

• In (analog) – Analog input from the sensor.
• Clock – Synchronization input for periodic sampling.

Output Pins

• Out (analog) – Measured current in amperes (A).

Categories

• File:TArduinoAnalogCategory.png Category Analog – Analog signal measurement and processing.
• File:TArduinoSensorCategory.png Category Sensors – Sensor interface components.