from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electronic component whose resistance is inversely proportional to the intensity of incident light; a photoconductor
Sorry, no etymologies found.
In most 'automatic'-mode strobes, the photoresistor controls a short-duration timer which drives a trigger circuit for the thyristor.
She recently built an "optical encoder," a photoresistor she programmed to count flashes of light.
It outputs a squarewave whose pitch is controlled by the amount of light striking a photoresistor.
If you aren't happy about your housemates sneaking around your room, maybe you could give the laser tripwire project a try, as it involves hooking up a laser pointer, a photoresistor, and a webcam together, creating a laser tripwire that will capture a photo of the intruder and upload a link to the photo on Twitter.
If you want to use stock components, then you can take a standard LED and photoresistor, (