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Kitronik Ambient Light Sensor Breakout Board

2.95
This circuit provides an analogue signal which gives a representation of the levels of light that are falling on the phototransistor on the board.

Availability: In Stock.

Code1+ 10+
5105£2.95
(£3.54 incl VAT)
£2.65
(£3.18 incl VAT)
OR

This circuit uses an SFH 320-3/4-Z phototransistor and provides an analogue signal which gives a representation of the levels of light that are falling on the phototransistor on the board. This is achieved by creating a potential divider using a 2M2 resistor and the phototransistor. As the light level increases the resistance of the phototransistor decreases, which increases the voltage at the SIG pin. So by reading the voltage at the SIG pin you can determine how much light the phototransistor is being exposed to.

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

Features:

  • A phototransistor with easy to use connections.
  • Measures ambient light level.

Contents:

  • 1 x Ambient Light Sensing Breakout Board.

Possible applications include:

  • Day / night activation of equipment.

Dimensions:

  • Length: 28mm.
  • Width: 18mm.
  • Height: 3mm.

Connections:

  • Vcc: Supply Voltage
  • SIG: Analogue Out
  • GND: Ground

Resources:

This product is supplied in a bag.


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Questions:

Posted by Theo Saitis, Thursday, 5 January 2017 on product Kitronik Ambient Light Sensor Breakout Board
  • 0
    vote
    A:

    Hi Theo, I have checked the parts this for this product and it does appear we use a 220K resistor, not a 2.2meg resistor. I have flagged this with our web team to review, thank you for pointing this out.

    Posted by Michael Lockhart on Thursday, 5 January 2017

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Physical characteristics:

  • Length: 28mm.
  • Width: 18mm.
  • Height: 3mm.

Electrical characteristics:

  • Min supply voltage: 0.6V
  • Typical supply voltage: 3.3V-5V
  • Max supply voltage: 6.0V
  • Typical current consumption: <15mA
  • SIG output: 0.3V to 4.9V (when using 5V)
  • Spectral Range of Sensitivity: 450nm to 1150nm
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