Photosensitive Sensor Module Testing

I got this from DX: MN-EB-PTCMN Photosensitive Sensor Module - Orange.


Basically a photocell, after some investigation I got some help from this site, the code showed here is

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int photoRPin = 0; int minLight; int maxLight; int lightLevel; int adjustedLightLevel; void setup() { Serial.begin(9600); //Setup the starting light level limits lightLevel=analogRead(photoRPin); minLight=lightLevel-20; maxLight=lightLevel; } void loop(){ //auto-adjust the minimum and maximum limits in real time lightLevel=analogRead(photoRPin); if(minLight>lightLevel){ minLight=lightLevel; } if(maxLight<lightLevel){ maxLight=lightLevel; } //Adjust the light level to produce a result between 0 and 100. adjustedLightLevel = map(lightLevel, minLight, maxLight, 0, 100); //Send the adjusted Light level result to Serial port (processing) Serial.println(adjustedLightLevel); //slow down the transmission for effective Serial communication. delay(50); }

This code is property of Scott please take a look at his site for more interesting posts.

Thanks to this excellent piece of code you get a reading from 0-100 of the light sensed. Cool to build on to another things.

Here's an image of the serial console of the reading.

Heres a basic of the circuit, basic 3 pins (ground, 5v, signal(this goes to analog 0 in arduino))