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Detailed Description:

Precisely monitor and manage electrical currents in your projects with the versatile ACS712 Hall Effect Current Sensor Module. This indispensable sensor, based on the Allegro ACS712 IC, provides an economical and highly accurate solution for measuring both AC (Alternating Current) and DC (Direct Current), without needing to break the circuit or introduce significant resistance. It's ideal for a wide range of applications, including motor control, power monitoring, battery management systems, and overcurrent protection circuits.

The ACS712 module operates on the principle of the Hall effect, where a magnetic field generated by the current flowing through an internal copper conductor is sensed by an integrated Hall IC. This generates an analog voltage output directly proportional to the measured current. A key advantage of this technology is the electrical isolation it provides between the current path and the sensor's output, ensuring the safety of your microcontroller and sensitive electronics from high voltage or current spikes.

Available in various current ranges, commonly ±5A, ±20A, and ±30A, the ACS712 module offers flexibility to suit different project needs. It typically operates from a 5V DC supply and provides an output voltage centered around VCC/2 (e.g., 2.5V for a 5V supply) when no current is flowing. The sensitivity (mV/A) varies with the current range (e.g., 185mV/A for 5A, 100mV/A for 20A, 66mV/A for 30A), allowing for precise calculations of the measured current. With its low-noise analog signal path, fast response time (typically 5 µs), and high accuracy (factory-trimmed for precision), the ACS712 Hall Effect Current Sensor Module is a robust and user-friendly choice for integrating current measurement capabilities into your Arduino, Raspberry Pi, or other microcontroller-based systems.

The ACS712 Current Sensor Module is a high-accuracy, Hall-effect-based current measurement module capable of detecting both AC and DC currents. Based on Allegro’s ACS712ELC chip, it outputs a linear analog voltage relative to the current passing through the onboard conductor. With galvanic isolation and fast response time, it is ideal for real-time monitoring in embedded electronics, automation, and energy metering systems. Available in three variants – 5A, 20A, and 30A, this module is compatible with Arduino, Raspberry Pi, NodeMCU, and other microcontroller platforms.

Key Features:

• Based on ACS712ELC Hall Effect IC

• Supports AC and DC current measurement

• Available in ±5A, ±20A, and ±30A versions

• Analog voltage output proportional to sensed current

• Galvanic isolation between current path and control circuitry

• High accuracy and linear output

• Simple 3-pin interface (Vcc, Out, GND)

• Onboard power indicator LED

• Compact and easy to mount

Technical Specifications:

How to Use:

1. Connect VCC (5V), GND, and OUT pins to your microcontroller (e.g., Arduino).

2. Feed your load current through the screw terminals (IN+ and IN−).

3. Use the analog output (OUT) to read voltage proportional to current.

4. The midpoint (2.5V at zero current) shifts up/down with the current direction and magnitude.

5. Use the formula:
   Current (A) = (Vout - 2.5V) / Sensitivity

Applications:

• Load current monitoring

• Solar power systems

• Overcurrent protection

• Industrial automation

• Smart energy meters

• IoT power sensing nodes

• Electric vehicle diagnostics

• Home appliances monitoring

• Battery management systems

Package Includes:

• 1 x ACS712 Hall Effect Current Sensor Module (Choose: ±5A / ±20A / ±30A variant)

• 1 x Set of Screw Terminals (pre-soldered or included)