Adafruit 1384 GA1A12S202 Log-Scale Analog Light Sensor

Adafruit 1384 GA1A12S202 Log-Scale Analog Light Sensor
£4.68  

Adafruit Analogue Light Sensor Breakouts - Adafruit 1384, The Adafruit GA1A1S202 Log-Scale Analogue Light Sensor is very simple sensor to use, just add power and then monitor the analogue output. Most light sensors have a linear response to the light intensity which means that they can be quite insensitive to low light levels and then max-out at high light levels. This sensor on the other hand has a logarithmic response which means that it is more sensitive in low light conditions when small changes in intensity make a big difference to a human eye. Its also less sensitive to changes in very bright conditions when it takes a bigger change to register with the human eye.The light sensor has a dynamic range of between 3 and 55,000 lux. 3 lux is equivalent to civil twilight. Heres a fun fact, evening twilight ends when the centre of the sun is 6° below the horizon. 55,000 lux is equivalent to full sunlight on a clear day.Supplied as a fully assembled and tested light sensor board plus a strip of 0.1in. pitch header pins for you to solder on as required. Adafruit provide a free tutorial to help get you started. When you read the datasheet you will see from table 3.3 that the GA1A1S202 provides an output current not a voltage. Adafruit have added a 68kΩ resistor to translate this to a more convenient and microcontroller friendly voltage of 0.3 to 3V. Adafruit 1384 GA1A12S202 Log-Scale Analog Light Sensor

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Adafruit 1384 GA1A12S202 Log-Scale Analog Light Sensor

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