In this post we learn how to transmit Internet data through LiFi using a class D amplifier as the transmitter and an ordinary audio amplifier circuit as the receiver. How Li-Fi Concept Works If you are wondering how a LiFi concept could be used for transmitting USB data, this article will provide with all the […]
Search Results for: transmitter
Spy Circuits – FM Bug Transmitters
Here we’ll discuss how to make an electronic spy bug circuit using two methods, one that consists of wire link from the transmitter to the receiver, and the other which is completely wireless and can be used to eavesdrop a particular conversation over a range of about 30 meters, over an ordinary FM radio. All […]
1.5 watt Transmitter – 500 meter Range
This little transmitter will allow you to communicate, chat, send music transmission on any standard FM Radio tuned within the existing band, across a radial distance of not less than 500 meters or half a kilometers. Warning: Using this transmitter could be illegal in your country or area, take appropriate permissions before indulging. How it […]
Simple TV Transmitter
The TV transmitter circuit presented in this post incorporates the European standard FM frequency for audio and Video up-links. Referring to the circuit below, Q1 is configured as a preamplifier for amplifying the audio input to be modulated. Circuit Description Q2 is fundamentally responsible for conducting a couple of important functions: It amplifies the carrier frequency […]
Long Range Transmitter – 2 to 5 Km Range
The proposed long range transmitter circuit really is very steady, harmonic free design which you can use with standard fm frequencies between 88 and 108 MHz. Technical Specifications of the Transmitter This will likely encompass 5km spectrum (long range). It includes an extremely consistent oscillator for the reason that you employ LM7809 stabilizer that is […]
Stereo FM Transmitter using IC BA1404
The following posts explains how to build a simple to build FM stereo transmitter circuit using IC BA1404. About the IC BA1404 An exceptional stereo audio FM wireless transmitter circuit is presented below. The circuit relies upon the IC BA1404 from ROHM Semiconductors. BA1404 is a monolithic FM stereo modulator which includes integrated stereo modulator, […]
How to Make a Wireless Robotic Arm using Arduino
This robotic arm circuit which can be also implemented like a robotic crane, works using 6 servo motors and can be controlled through a microcontroller remote control, using an Arduino based 2.4 GHz communication link. Main Features When you are building something as sophisticated as a robotic arm, it must look modern and must include many […]
Ultrasonic Wireless Water Level Indicator – Solar Powered
In this post we are going to construct a ultrasonic based solar powered wireless water level indicator using Arduino in which the Arduinos would be transmitting and receiving at 2.4 GHz wireless frequency. We will be detecting the water level in the tank using ultasonics instead of traditional electrode method. By Girish Radhakrishnan Overview Water […]
Wireless Office Call Bell
In this post we are going to construct wireless office calling bell which can be used for calling 6 different personnel from head’s / boss’s desk or some other calling bell type fun project for your home. By Girish Radhakrishnan Using nRF24L01 2.4 GHz module We will be constructing a simple wireless calling bell using Arduino […]
Mini Circuit Projects
The following page shows a comprehensive list of diverse electronic mini projects an circuits which are simple to build using minimum electronic components such transistors, resistors, capacitors and some easily available ICs like IC 555, IC 741, IC LM324 etc. These mini projects are specially designed keeping the new hobbyists in view and so ensure […]
Make this IR Remote Control Range Extender
In this post we will learn how to increase or extend the range of an ordinary infra red or IR remote control through a 433MHz RF remote control system. IR Range Extender Concept The idea of this circuit is to feed the IR data from an IR transmitter into the transmitter input of an RF […]
Simple Proximity Sensor
In this post we learn how to design your own simple yet useful proximity sensor circuit using a single opamp LM351 and a couple of infrared diodes. Overview A sensor is a device that detects and measures any physical parameter of our environment and converts it into electric signals. There is a long list of […]
Using TSOP17XX Sensors with Customized Frequencies
We know that the center or band-pass operating frequency of a TSOP17XX IR sensor is assigned to a particular frequency which makes it difficult to use these sensors for designing unique or customized frequency based remote control circuits. In this post we will try to figure out an idea for enabling these sensors to work […]