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car parking sensor circuit using infra – Circuit Schematic
car parking sensor circuit using infra
All distances mentioned before can vary, depending on infra-red transmitting and receiving LEDs used and are mostly affected by the color of the reflecting surf...
colours sensor detector circuit – Circuit Schematic
colours sensor detector circuit
This circuit can sense eight colours, i. e. blue, green and red (primary colours); magenta, yellow and cyan (secondary colours); and black and white. The circui...
color sensor circuit diagram – Circuit Schematic
color sensor circuit diagram
This is a color sensor Circuit Diagram. This circuit will sense 8 colors that are:, green, red and blue ; magenta, cyan and yellow ; and black and white. It`s w...
plant soil moisture meter and automatic controller circuit – Circuit Schematic
plant soil moisture meter and automatic controller circuit
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Infrared Radar Circuit – Circuit Schematic
Infrared Radar Circuit
Chris from PyroElectro.com has a great article about a do-it-yourself radar system build with PIC18F452. It’s a great hobby project although the schematic ...
automatic detectors water tank pump – Circuit Schematic
automatic detectors water tank pump
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basic lm35 temperature sensor circuit – Circuit Schematic
basic lm35 temperature sensor circuit
This is basic of workmaship LM35 temperatur sensor, whish is taken from the LM35 spending and boosted again by the amplifier op-amp. High output if the sensor i...
fotovoor schema – Circuit Schematic
fotovoor schema
The Photovore`s brain is built around two NAND-gates and six inverters, four elements each in two 74HC00 IC`s. Two photodiodes (the `eyes`) and two feelers prov...
Ultrasonic signal range – Circuit Schematic
Ultrasonic signal range
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ultrasonic parking sonar – Circuit Schematic
ultrasonic parking sonar
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infrared motion detector – Circuit Schematic
infrared motion detector
Here is the circuit diagram of an infrared motion detector that can be used to sense intrusions. Infra red rays reflected from a static object will be in one ph...
interface humidity sensor – Circuit Schematic
interface humidity sensor
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wireless temperature sensor – Circuit Schematic
wireless temperature sensor
Use a voltage to frequency conversion chip along with an analog temperature sensor such as LM335 or a thermistor, and then transmit the modulated frequency sign...
ir sensors from scratch line follower – Circuit Schematic
ir sensors from scratch line follower
To get a good voltage swing, the value of R1 must be carefully chosen. If Rsensor = a when no light falls on it and Rsensor = b when light falls on it. The diff...
Rain sensor circuit diagram – Circuit Schematic
Rain sensor circuit diagram
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Heat sensor circuit – Circuit Schematic
Heat sensor circuit
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temp control circuit – Circuit Schematic
temp control circuit
For a few experiments such as solar air heaters, I needed a automatic turning on and off of a fan. Probably the simplest way to do this is with a bimetal snap d...
Ultrasound Sonic Heterodyne Receiver – Circuit Schematic
Ultrasound Sonic Heterodyne Receiver
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oxygen sensor tester circuit board – Circuit Schematic
oxygen sensor tester circuit board
A 12V supply is connected to the 12V positive wire, the current flows through a protection diode and a capacitor, in order to filter the voltage into a smoother...
schematic diagram of my geiger counter – Circuit Schematic
schematic diagram of my geiger counter
I found some relatively cheap ex-army radiation detectors at an army-dump shop. One of them appeared to be suitable to even detect the (usually low) background ...