Constructing your own FM/Ultrasonic/Infra Red Wireless Projects

RFID Application and Design
This project provides the basic of RFID and the application in the frequency range of 13.56MHz.


IR Remote Control Transmitter
This project is based on integrated circuit from Holtek Semiconductor HT6221/HT6222. These ICs are commonly used in television and VCR infra red remote controls, garage door controllers, car door controllers, security systems and other remote control applications.


Infrared Remote Control Decoding Project
This project based on Microchip 16C57 microcontroller decodes infrared remote control signals from television, VCR, air conditioner or other home appliances handset that uses NEC 6121 infrared format.


Infra Red Door Monitor
This door monitor project uses an infrared beam to monitor door & passageways or any other area. When the beam is broken a relay is tripped which can be used to sound a bell or alarm. Suitable for detecting customers entering a shop, cars coming up a driveway, etc.


9V FM Transmitters
Construct a FM transmitter in the range of 89MHz-109MHz. A simple LC tuned oscillator is used to generate the frequency needed in this educational project.


3V FM Transmitter
Schematic and the parts list needed to construct a 3V FM Transmitter.


FM Phone Transmitter
This device attaches in series to one of your phone lines. When there is a signal on the line (that is, when you pick up the handset) the circuit will transmit the conversation a short distance.


Ultrasonic Motion Detector
This device can be used to detect any moving object where it is installed. You can place it in the driveway, on the porch, garage, basement or any place where you need to be informed of any object that comes near the location.


Infrared Motion Detectors
This project is an excellent way for beginners of electronics and students to learn about the applications and concept of infrared devices.