{"title":"Octopus Analog Photocell Brick OBPhotocell","handle":"octopus-analog-photocell-brick-obphotocell","url":"/products/octopus-analog-photocell-brick-obphotocell","description":"The Octopus Analog Photocell Brick is a light-dependent resistor (LDR) module from the ElecFreaks Octopus Electronic Bricks series. It uses a cadmium-sulfide (CdS) photocell that changes resistance based on ambient light levels — the brighter the light, the lower the resistance. With its 3-pin connector, it plugs directly into sensor shields and expansion boards with no soldering required.\n\nPhotocells are ideal for detecting basic light level changes such as \"light vs dark\", \"something blocking a sensor\", or \"which direction has more light\". They're inexpensive and easy to use, though not precise enough for exact lux measurements.\n\nKey Features\n\n\nCdS Photocell (LDR) – Resistance varies with light intensity\n\nAnalogue Output – Read light levels via an analogue input pin\n\n3-Pin Connector – Buckled wire interface for secure, breadboard-free connections\n\nPlug and Play – No soldering; connects directly to sensor shields and OCTOPUS:BIT\n\nWide Compatibility – Works with Arduino, micro:bit (via OCTOPUS:BIT), and other MCU boards\n\n\nIdeal For\n\nLight vs dark detection for automated projects\nBreak-beam and object detection sensors\nAmbient light level monitoring\nBeginner Arduino and micro:bit projects\nSTEM education and classroom activities\n\n\nResources\n\nMakeCode Example Program (micro:bit)\n","vendor":"ElecFreaks","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4655,"title":"Default Title","sku":"EF-EF04032","price":2.32,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}