Data: Sheet Light Dependent Resistor
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Data sheet for the 7805 (LM7805), a compact IC 5v DC voltage regulator integrated circuit. This page further describes the 7805 and provides Datasheets for the IC device.
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Datasheet and PDF Data sheet for the TL494 Pulse Width Modulation (PWM) Control Circuit.
Light Activated Music Box
This circuit will play a tune when light strikes a light dependent resistor, such as when a music box lid is opened.
Traffic Lights Kit / Circuit
The Traffic Lights circuit performs actions just like those of a real traffic light system, switching between red, amber & green.
Photo Sensor with Control Relay
The most popular use for this kit is to make you own night-light. It can also be used to switch just about any appliance on or off in light or darkness. Light sensitivity is adjustable over quite a range. The relay can handle up to 10 Amps at 110VAC. Oper
Light Activated Relay Switches
Three relay-based electronic switching circuits that switch according to light levels.
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Complete instructions and circuit diagram for a Geiger counter meter device, which will allow you to measure radiation levels.
Audio-Light Modulator Isolator
Introduces the Optocoupler-triac MOC3010. Complete electrical isolation between input audio signal (low voltage circuit) and output light modulation. Operates from 100 VAC line. Audio input via 3.5mm jack.
Light Alarm Electronic Kit
A sensitive photo Darlington transistor is used with a CMOS nand gate. The circuit detects light and triggers a siren. You could add your own triac or relay and switch practically anything. The kit uses the MEL12 Darlington super alpha phototransistor, ty
Outgoing Phone Number Logger Kit
Recorder all outgoing dialed numbers on your phone with this electronic kit.
Educational Robit Kit Moon Walker II
A stronger, Mecha-Medusa is a walking robot that operates with the aid of a sound sensor. Clap hands or snap fingers to command this robot to start walking on four legs. Stops automatically after a preset time. Ideal for the hobbyist or budding scientist.
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Circuits that operate just like the real gameshows, where a light shows up for the first contestant to hit their answer button.
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This super cool circuit behaves as a clapper-switch. You clap and the circuit turns on. Clap and it turns off. Great as a light clap switch.