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Remote Infrared Switch Circuit
SFH505A made by Siemens combine infrared diode receiver, amplifier, demodulator and a filter band pass for minimizing interferences. This circuit works tog..
Basic Infrared IR Transmitter Circuit
This infrared tranmitter is intended for use with this infrared receiver. It works with 2 - 1.5V batteries or a 3V lithium battery. To give a compact infra..
Improved Infrared Detector Circuit
This improved infrared detector is specifically intended for use with commercial IR remote control handsets. This little circuit is useful for quick go/no-..
Infrared Switch Circuit
A Simple Infrared controlled Switch. It can be operated using the TV remote handset. The Load can be any AC operated device which can be connected to the relay. The load turns on for three minutes then goes off. It can be used to switch on the lamp in the TV room The circuit uses the popular IR sensor module TSOP 1738 and the precision Mono
Infrared Remote Control Tester
This small InfraRed Remote Control Tester circuit is used for checking the operation of an infrared remote control unit. The circuit is based on the idea of connecting a piezo buzzer directly to an IR receiver IC. The TSOP1738 integrated IR receiver accepts, amplifies and demodulates the IR signal from the remote control, producing an output with
Power Switch with Infrared Proximity Sensor
The power switch with infrared proximity sensor is intended for the recognition of obstructions at distances of a few millimetres to a few centimetres. Thi..
Invisible Infrared Alarm Circuit
This circuit uses invisible infrared light to detect the movement of people through the door. A short beep will be generated when the infrared beam breaks
LM567 Infrared Transmitter Circuit
The transmitter is equiped with LM567, tone decoder circuit. Audio signal ( at least 50mVvv ) is amplified with T1 and then it is used to modulate IC1. Infrared transmitter frequency is adjusted with P2 between 25 and 40KHz.
Infrared Alarm Barrier Circuit
This infrared alarm barrier can be used to detect persons passing through doorways, corridors and small gates. The transmitter emits a beam of infrared light which is invisible to the human eye. The buzzer at the output of the receiver is activated when the light beam is interrupted by a person passing through it. The transmitter and receiver circ
Infrared Model Train Detector Circuit
This simple and economical IR model train detector circuit is intended especially for those hobbyists who wish to add a smart sensor to detect trains on their model railway track. As can be seen in the schematic diagram, it comprises of a simple infrared transmitter and receiver wired around the good old PLL Tone Decoder LM567(IC1). It has a worki
Infrared Remote Control On/Off Switch Electrical Mini Project
This is a good Electrical project report on Infrared Remote Control On/Off Switch and was Submitted in partial fulfillment of the requirements for the award of the degree of Bachelor of Engineering in Electrical Engineering and is used to switch on/off the Home Appliances by using a standard Remote control. The system is used to switch on/off upto
Infrared-Led based Wireless Data & Voice Communication withCircuit
Objective of this project are to Design a circuit of an electronic infrared communication system, develop new ideas to implement this circuit purposely, to study the circuitry and different types of components & DTMF generator, DTMF decoder, op-amp and infrared-LED in the circuit. The main part of Circuit is an amplifier. This sound signals...
4 channel infrared remote relays
Infrared cordless Headphone Amplifier
Transmit Infrared Signals Through Walls
How to use your existing infrared transmitter from any room in the house. The principal is really pretty simple, and it works better than you would think. This is a "very handy" little project. With this gadget you can control anything from pretty much anywhere. Even place your stereo equipment inside an enclosure then use your existing IR...
Project [E-20] Infrared Data Transmitter
The AVR Basic Infrared Transmitter is a sister project for the Basic Infrared Reciever. The emphasis here is on "basic" because the simplest version can be built using only 10 discrete components and a typical AVR microcontroller. Taken together, these two projects will allow your projects to be remotely operated for distances averaging as far as
Glolab 4 Bit Encoder/Decoder for Wireless and Infrared
The Glolab ED4GP microprocessor based Encoder / Decoder is designed for use with wireless modules, infrared remote controls and other devices that operate with serial input and output data. It can be used as either an encoder or a decoder by simply connecting pin 3 either low to VSS for an encoder or high to VDD for a decoder. It can encode or dec
Infa-Red Remote Control circuit
his remote transmits a tone using an infa-red LED. This tone is decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental activations..
Infra Red Switch circuit
This is a single channel (on / off) universal switch that may be used with any Infra Red remote control that uses wavelengths between 850-950nm..
IR Remote Control Jammer circuit
Don`t like your little brother`s TV channel selection? Hate the volume your wife sets the stereo at? Want to just annoy someone? This circuit does all that and more by jamming most IR remote signals. The circuit releases a flood of pulsing IR light that confuses the reciever by corrupting the data stream..
IR Remote Control Tester circuit
IR Receiver Toggle Switch circuit
Infrared Fire-Cracker Igniter circuit
Firecrackers are normally ignited by using a matchstick or a candle. You have to run away quickly after igniting the fuse of the firecracker. This method of igniting firecracker is unsafe, because the danger of the firecracker bursting before you reach a safe distance is always there. The device described here uses remote control, usually used wit
Long-Range IR Transmitter circuit
Most of the IR remotes work reliably within a range of 5 metres. The circuit complexity increases if you design the IR transmitter for reliable operation over a longer range, say, metres. To double the range from 5 metres to metres, you need to increase the transmitted power four times. If you wish to real i se a highly directional IR beam (very...
On-off Infrared Remote Control circuit
Most homes today have at least a few infrared remote controls, whether they be for the television, the video recorder, the stereo, etc. Despite that fact, who among us has not cursed the light that remained lit after we just sat down in a comfortable chair to watch a good film? This project proposes to solve that problem thanks to its original...
ir remote control tester
This small circuit is ideal for checking the basic operation of an infrared remote control unit. The circuit is based on the brilliantly simple idea of connecting a piezo buzzer directly to an IR receiver IC. This method is almost as simple as connecting a photodiode directly to the input of an oscilloscope, but has the advantage that no...
Infrared Remote Tester circuit
A very simple device allowing a quick check of common Infra-red Remote-Controls can be useful to the electronics amateur, frequently asked to repair or test these ubiquitous devices. A reliable circuit was designed with a handful of components: the LED will flash when any of the Remote-Control push buttons will be pressed. The side of the...
IR (Infrared) Detector Circuit
Men in particular enjoy the convenience of television remote controls often to the annoyance of their female partners. Men apparently want to know what they re missing when the TV is tuned to a particular program, so they like to keep zapping to other channels. With the remote control in their hands, they feel like they are the lord and master...
ir music transmitter and receiver
TV Muter Circuit
Many households are still graced by tube-type television sets. If you want to connect one of these large tellies to your stereo system to improve the sound quality, this is usually not a problem because there are plenty of SCART to Cinch adapters available in accessory shops. However, with some sets your pleasure is spoiled by the fact that the...
220vAC Operated Remote Tester circuit
Here is a simple tester for checking the basic operations of an infrared remote control unit. It is low-cost and easy to construct. The tester is built around infrared receiver module TSOP1738. Operation of the remote control is acknowledged by a tone from the buzzer. The circuit is sensitive and has a range of approximately five meters. The...
Schematic - Wireless Infrared Communication Link System
Light Sensing Circuits
Light Dimmer Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
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