Light: Detector

Metal detectors a tons of fun. These metal detector electronic circuits will enable you to go hunting for all kinds of cool stuff, wherever you like!

The Traffic Lights circuit performs actions just like those of a real traffic light system, switching between red, amber & green.

A bit different from other kits. We supply the three basic components for you to make your own movement detector. Included is a PCB mounted fresnel lens, a PIR movement sensor and the latest movement IC just released. Eight pages of application notes show

This super sensor detector sounds an alarm if someone approaches the unit. Adds safety to your home or office. Learn the basics of motion detector technology. Uses pyroelectric infrared sensor.

This is an excellent security device, sees infra red heat of intruder in field of view. This is a recent design for a PIR detector; should not be underestimated. Rather than the usual opamps-amps and amplifiers, this kit uses a movement IC. Has PC board m

This circuit will play a tune when light strikes a light dependent resistor, such as when a music box lid is opened.

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

A simple circuit that flashes an LED when a cell phone has an incoming call. Uses a coil to pick-up the signal emitted during an incoming call event. Cell phone call detector.

Three relay-based electronic switching circuits that switch according to light levels.

The circuit uses a matched pair of 40 Khz transducer elements to detect movement up to 22 feet away. You may add a relay (not included) to switch higher voltage loads. The unit switches a LED for movement indication. Sensitivity is setable via control. Cr

Versatile light organ based on PIC microcontroller.

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.

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

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.

Circuits that operate just like the real gameshows, where a light shows up for the first contestant to hit their answer button.

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.

This is an extremely simple lie detector electronic circuit that can help tell if somebody is lying to you (oh how we hate liars!).