Micro scale radio transceiver for a sensor network demo

For a Micro scale radio transceiver for a sensor network demonstration, roI'm looking for a very small and light weight radio tranceivers capable of transmitting and receiving digital data within 3 meters radius.

Followings are desired specifications; Weight : Less than 5 grams (including battery, probably a tiny watch battery) Size : as small as possible Operation life time : 5 hours operation with a new battery Bit rate : 9600 baud (or faster) Communication range : 3 meters Capable of operating in the presence of multiple other active transceivers of the same kind within 3 meters. This effectively means that multiple transceiver can simulataneously communicate with each other and/or a host. (It is acceptable if transceivers required to be programmed to have unique addresses prior to experiments.) Capable of operating on a moving platform (including on a human or animal)

Any suggestion will be highly appreciated.

Regards,

Gustav Gorev

Reply to
Gustav Gorev
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The new range of microprocessors from microchip would be perfect for you. They integrate a UHF transceiver and are as small as you will find. rfPIC12F625H or similar Won't break the bank too. AU$3.86 from Futurlec.com.au

What are you building?

Reply to
Heywood Jablome

Only 5 hours ? nordic rf240x chip

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Sparkfun.com sells some little modules with these chips.

If you want to have multiple transceivers talking with each other thats going to get very tricky and expensive quickly.

Good chance you are going to have to implement a protocol on top the base chip. Something like can bus that can handle multiple transcievers. Ther nordic rf2401 can handle 2 recieve channels(8 MHz apart)

Problem is a lot of chips like this are designed to be paired.

Reply to
Alex Gibson

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