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Mini Photocell
sku: SEN-09088
Description: This is a very small photocell. A photocell changes (also called a photodetector, CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something).
Features:
- Light resistance : ~1k Ohm
- Dark resistance : ~10k Ohm
- Max voltage : 150V
- Max power: 100mW
Dimensions:
- 2 x 4 x 5mm
- 4mm between pins
- 31mm lead length
Documents:
Pricing
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Comments
6 comments
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I first used them for an automatic blinds project to detect when morning comes. I've also used them to detect lines on a line following robot. I know that the combo IR emitter detectors work better but at this price it is worth paying for just to see if it will work for your purposes. I was able to simply connect this with a 10k resistor as a resistor divider to an ADC pin. I then was able to reliably use it to detect a 1/2" solid black line pretty reliably.