Electronics-Lab.com Blog

The purpose of this project was to design and implement a reliable and cost effective wireless temperature sensing system for the recreational spa industry. This wireless product has potential applications in many other areas including, salmonid enhancement hatcheries, private/public tubs, and indoor/outdoor pools. [via]

Wireless Spa Temperature Sensing System - [Link]

If you have an Arduino project where the dev board is stuck inside a machine, or attached to the rafters or is inaccessible in some other way, a wireless programming/debugging link will save you tons of time. This tutorial is an extension on Rob’s version. In this version, no extra firmware or hardware (other than a capacitor) is necessary. Just use the default bootloader. I demonstrate it with a ‘classic’ Arduino but of course this can be easily adapted to any version or clone.

Wireless Arduino programming using XBee’s - [Link]

XBee modems are one of the easiest ways to create a wireless point-to-point or mesh network. They have error correction, are configured with AT commands, come in multiple flavors and can create a wireless serial link out of the box! I wanted to make a wireless Arduino project but all the adapter boards on the market made me unhappy. So I designed what I think is an excellent low-cost adapter board.

An XBee wireless modem adapter - [Link]

SquidBee is an Open Hardware and Source wireless sensor device. The goal of SquidBee is getting an “open mote” to create Wireless Sensor Networks (WSN).

How does SquidBee work?

• Acquires values from environment parameters: temperature, humidity, lightness, presence, pressure or (almost!) whatever you can sense
• Operates with these values, when required
• Transmits these values using a low power comsumption wireless technology (ZigBee)
• Sleeps until next timeout and repeats from the first stept

SquidBee: Wireless sensor device – [Link]

Low Power Radio Solutions announces new wireless modules from Circuit Design Inc., the leading producer of narrowband radio modules. The CDP-TX-02E-R and CDP-RX-02E-R radio modules are intended for use in wireless industrial products.

The CDP-TX-02E-R and CDP-RX-02E-R are housed in small, robust shielded cases and require only a small number of additional components to make a working radio system. Thy use narrow-band FSK modulation for high noise immunity, and the high-sensitivity receiver ensures stable operation even in weak signal fields. The modules achieve a line-of-sight communication distance of more than 600 m with only 10 mW power output. They also combine a very small footprint with HF characteristics that guarantee high reliability and resistance to mechanical vibration and shock. [via]

Narrowband radio modules span 600 m with 10 mW - [Link]

Here is a practical example how to use a XBee module with PIC18F452 to remotely control a led connected to the port of the recieving module.

Wireless Communication with XBee Radios - [Link]

This simple circuit demonstrates wireless transmission. You can send Morse Code signals over distances of a few meters to any AM radio. The antenna is created by winding 3 meters of wire on two 12 cm sticks secured 6 cm apart. Any wire is OK for the antenna.The switch is constructed from a small piece of aluminum cut from a cookie sheet and all of components attached to a piece of wood(the antenna, breadboard and switch). [via]

Experimenting with Wireless Transmission - [Link]

This system acquires several different sensor inputs, FM modulates each level by manipulating Direct Digital Synthesis(DDS) increment values, transmits the resulting signal on a commercial FM radio band, and receives and decodes the original sensor levels. [via]

Wireless Telemetry System - [Link]

WIMP is a project developed by 5 students as the 4th year project and supervised by Professor Trevor W. Pearce of the Department of Systems and Computer Engineering at Carleton University. But, what the heck is WIMP ? As the title says its a wireless interactive media player, basically a MP3 stereo system with a wireless link to a PC. Currently the students are still working on the project, but I can see some serious applications, for this system in the future, so good luck guys in finishing the project and scoring nice grades. [via]

Wireless Interactive Media Player (WIMP) - [Link]

This is wireless FM transmitter project, when you speak into the transmitter and others hear you on any FM radio. The transmitter can be built in an afternoon with simple, affordable and widely available parts. Construction is fun and much can be learned although performance is modest; for example, your voice gets difficult to hear at distances greater than 25 feet. [via]

Wireless FM Transmitter - [Link]