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water level circuit – Circuit Schematic
water level circuit
There are situations in home automation applications where you would like to measure the level of some body of water (e. g. pool, pond). The 1-Wire network make...
ultrasonic range imager – Circuit Schematic
ultrasonic range imager
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thermoelectic controller scriptable thermometer – Circuit Schematic
thermoelectic controller scriptable thermometer
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sound sensor schematics – Circuit Schematic
sound sensor schematics
Here is simple sound sensor schematic, it`s use only one IC and and two transistor to drive the relay. this schematics can change the sensitivity using VR resis...
geomagnetic field detector – Circuit Schematic
geomagnetic field detector
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adxl202 accelerometer to cv output – Circuit Schematic
adxl202 accelerometer to cv output
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active ir motion detector – Circuit Schematic
active ir motion detector
Circuit shows the operation of an ultrasonic motion detector. There are two transducers, one emits an ultrasonic wave and the other picks up reflections from th...
acceleration monitor using adxl202 and avr – Circuit Schematic
acceleration monitor using adxl202 and avr
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Motion sensing wildlife camera – Circuit Schematic
Motion sensing wildlife camera
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ultrasonic sensor interfacing with 8051 – Circuit Schematic
ultrasonic sensor interfacing with 8051
If you want to make your robot sense the objects in it`s surroundings i suggest you to go for an ULTRASONIC sensor. Though the IR based sensors are cheep, their...
simple line follower – Circuit Schematic
simple line follower
If there is no light falling on the diode it will exert a high impedance(resistance). if light falls on the diode resistance of the diode willdecreased. (almost...
making simplest room thermometer – Circuit Schematic
making simplest room thermometer
The circuit diagram shown below explains it all, no need of any complicated circuitry, just connect a 0-1 V FSD moving coil meter across the relevant pins of th...
how to make simple earthquake sensor – Circuit Schematic
how to make simple earthquake sensor
The article shows a circuit idea which incorporates an innovative way of detecting the minutest of shocks caused by a possible earthquake tremor. The circuit is...
how to make vibration detectormeter – Circuit Schematic
how to make vibration detectormeter
Whether it`s truckthrottling over the highway, or an airplane roaring about the sky, or whether it`s a knock on the door or a purring of the cat or simply your ...
Line Detector – Circuit Schematic
Line Detector
One of the simplest ways to show autonomous motion of a robot is to have it follow a line. In fact there are competitions for the fastest or for robots that can...
dry model 1 isca tracker – Circuit Schematic
dry model 1 isca tracker
This is a handmade prototype research project, intended to demonstrate what goes into a tracker and to facilitate developing tracker-related magnetic-field mode...
Protector – Circuit Schematic
Protector
The circuits presented here will prevent turnouts from being thrown while a train is on a switch, ideal where the switch cannot be seen by the operator. They us...
8PhotoNonInverting – Circuit Schematic
8PhotoNonInverting
The circuit on this page is for a visible and infrared light detector circuitboard that has 8 detectors. LM339 voltage comparators are the active element. These...
Photo Inverting – Circuit Schematic
Photo Inverting
For phototransistors a value of 470K ohms will work for most room light situations. If the light is dim, selecting a higher value resistor such as 1 Megohm will...
continuity tester circuit – Circuit Schematic
continuity tester circuit
A continuity tester is handy for checking that there is a conducting path between two points. The following circuit has the advantage that it is very sensitive ...