Hero image 0 of Adafruit Photo cell (CdS photoresistor), 0 of 2

Adafruit Photo cell (CdS photoresistor)

(No ratings yet)

Key item features

Resistance range is 1K - 10K
Symmetric pins
Not RoHS compliant

Specs

Brand
Adafruit
Model name
ADA161

Current price is $6.74

Price when purchased online

Out of stock

How do you want your item?

Out of stock

Report an issue with this seller

About this item

Product details

Key Features

Resistance range is 1K - 10K
Symmetric pins
Not RoHS compliant

CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When its light, the resistance is about ~1KΩ, when dark it goes up to ~10KΩ.

To use, connect one side of the photo cell (either one, its symmetric) to power (for example 5V) and the other side to your microcontroller's analog input pin. Then connect a 10K pull-down resistor from that analog pin to ground. The voltage on the pin will be 2.5V or higher when its light out and near ground when its dark.

Item Specifics
Length: 4.46mm/0.18in
Width: 5mm/0.20in
Height: 2.09mm/0.08in
Weight: 0.25g/0.01oz
CdS photocells are not RoHS compliant

Resistance range is 1K - 10K
Symmetric pins
Not RoHS compliant

info:

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.

Specifications

Brand

Adafruit

Model name

ADA161

Warranty

Warranty information

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.