Current Sensor Breakout Board (ACS711)

KitronikSKU: KIT5107
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Sale price £7.70
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Description

This circuit uses the ACS711 and can be used to measure currents ranging from -25A to 25A. The current you are measuring is routed into the pad labelled IP+ and back out of IP-.

The board contains a range of hole sizes allowing for different gauge wires to be connected to the board. The IC then outputs the reading as an analogue signal between 0.3V and Vcc-0.3V to the OUT pin. When no current is drawn the output is at half the supply voltage, as the current draw increases the output moves further away from the centre point.

If the device is operated from a 5V supply and is connected directly to a microcontroller analogue input (with a 10-bit resolution) then the resolution of the current reading will be 55mA.

The sensor works by utilising the Hall Effect so it must be kept away from strong magnets if it is to function correctly.

The board can easily be connected to a microcontroller and will operate at 3V or 5V.

Features

  • Measures up to 25A current (in either direction)
  • Can be used with a microcontroller or an analogue circuit

Package Contents

  • 1 x Current Sensor Breakout Board

Connections

  • Vcc: Supply Voltage (3 to7V)
  • OUT: Analogue Out (0.3V to Vcc-0.3V)
  • GND: Ground (0V)
  • FLT: Fault Pin
  • IP+: Current sensing pins + (-25 to 25A)
  • IP-: Current sensing pins - (-25 to 25A)

Resources

Dimensions

  • Length: 38mm
  • Width: 28mm
  • Height: 3mm

Note: the maximum working voltage is 100V VAC peak or VDC.

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