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Temperature: Detector 8051

Metal Detector Circuit Diagrams
4 Comments - in Miscellaneous
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!
Photo: Temperature Meter LCD Temperature Meter LCD
This temperature meter uses a Harris 7106 IC as the heart of a low cost, accurate temperature meter. LCD 3-1/2 digit readout. All of the active circuits are in this one, versatile chip. In addition to temperature functions, the board includes an area for
Photo: Motion Detector Movement Detector Components Motion Detector Movement Detector Components
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
Photo: Motion Detector Motion Detector
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.
Mobile Phone Incoming Call Detector
5 Comments - in Telephone
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.
Photo: Motion Detector Ultrasonic Movement Detector Motion Detector Ultrasonic Movement Detector
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
Photo: Infra Red Motion Movement Detector Infra Red Motion Movement Detector
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
Photo: Peltier Junction Thermo Electric Heat Pump Peltier Junction Thermo Electric Heat Pump
Learn how to control temperature with a Peltier Junction with PID temperature controller.
Photo: Temperature data logger, multi channel Temperature data logger, multi channel
PC controlled 4 channel temperature meter
Photo: Temperature Controller Temperature Controller
This LCD panel meter is a very flexible design that can be customized to your own VOLT meter or AMP meter needs. It may be customized to measure any voltage range, standard or not. Or you can customize it to measure input from a transducer; full details a
Photo: Peltier Junction Module Peltier Junction Module
Learn how to control temperature with a Peltier Junction with PID temperature controller.
Simple Electronic Lie Detector Circuit
0 Comments - in Fun and Games
This is an extremely simple lie detector electronic circuit that can help tell if somebody is lying to you (oh how we hate liars!).