Configuring and using XBEE wireless modules

Xbees are some of the most powerful wireless modules you can find and they are also very easy to configure and use. The only thing is they cost about Rs.1000 to...

Wireless Ir Headphone Receiver Circuit

IR detector diode D1 intercepts the IR signal at around 40 kHz and feeds it from Ul, a high-gain preamp, to PLL, U2, a 4046 configured to serve as an FM detect...

Wireless Ir Headphone Transmitter Circuit

The transmitter for the wireless headphones is built around a CD4046 CMOS phase-locked loop, coupled with a driver transistor, and a pair of infrared LEDs. Alt...

Wireless-video-camera-link

This high-performance video-camera link transmits signals from your video camera to your VCR, or from your VCR to TVs throughout your home. The first stage of ...

Infrared-wireless-speaker-system

Although theIR region is free from radio interference, it is subject to interference from incandescent lamps, fluorescent lamps, stray reflections, and other s...

Invisible infrared pulsed laser

The device generates an adjustable frequency of low to medium powered IR pulses of invisible energy and must be treated with care. The portable battery pack is ...

Wireless Lan for AVR microcontrollers

The page is about equipping an Atmel AVR microcontroller based system with a Prism WLAN interface. This document is intended for people that already have experi...

Wireless doorbell 300MHz

The operation of a 303MHz circuit has been covered in our project WIRELESS DOORBELL. We are not going over how the circuit works but explain the importance of...

GSM900 Cellular Jammer

Emits a carrier that sweeps the 925-960 MHz cellular tower transmitter band (handset receive band)....

Mobile cellphone jammer

This cell phone jammer is not applicable for use in Europe, Middle East, nor Asia. The GSM jammer circuit could block mobile phone signals which works on GSM19...

Wireless LCD Display (AT90S2313)

Its an adaptation of the 2X 16 LCD project, by adding a fettite loop antenna, two resistors, and a capacitor. Here the display shows the output of the 10 bit sc...

Wireless Coupler

Here's a way to get a short range bidirectional RF (Radio Frequency) channel on a microcontroller, using the controller's tristatable I/O pins and on-chip compa...

Wireless Coupled Scanning Voltmeter (ATMega8)

A 10 bit scanning voltmeter with a Minimum Mass Wireless Coupler, based on the ATMega8.Range to the Minimum Mass Base Unit is 10 to 15 cm. If the voltmeter is b...

Wireless XBee Accelerometer

The present document shows step by step how to easily build an interesting pointing device: the wireless tilt mouse, that allows to control the mouse?s cursor o...

Wireless Keylogger circuit

The Wireless Keylogger consists of two main building blocks: the transmitter, and the receiver. The actual keylogging takes place in the transmitter, which is i...

Wireless Data Communication system

This project is used to communicate or transmit a text message from one place to another place through wireless. The text message is encrypted by using the Micr...

Bluetooth for Symbian OS Mobiles

Use your Symbian OS mobiles to control devices through Bluetooth. The serial to Bluetooth converter from sparkfun.com is used in this project. The Microco...

BEEPER BUG

This bug can be attached to anything from a glider to a pot plant and you can track it with a radio. Why track a pot plant? The Beeper is the result of many ...

Tin Can Waveguide WiFi Antenna

Got no dough for a commercial WiFi antenna? Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cante...

Tin Can Waveguide WiFi Antenna

Got no dough for a commercial WiFi antenna? Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cante...