Looking for TINY Rx/Tx modules

[strokedmaro]

what up...Someone sent me this link Complete TWS-434 RWS-434 4-Bit RF remote control package...I tried it and its awesome!! The only problem I have is I would like this exact setup on a different frequency so I can use 2 of them in close proximity. Can I modify one or does anyone know where I can get something equally small on a different frequency? I dont need a single 8 channel...I really only need a 1 or 2 bit version. Need to send info with one and receive with the other. Any help appreciated.

 

[MioTheGreat]

SparkFun sells 315MHz radio transmitter/receiver pairs for $9.

SparkFun Electronics

 

[transistance]

I was looking for complete micro tx/rx modules. these are going to be very helpful! thx for posting

 

[Boncuk]

Is that tiny enough? Die size 2.910X3.315µm.

The name of the device is RF12. It is a transceiver working on 315, 433, 868 and 915MHz.

Check out hoperf.com

 

[MacFeegle]

Reynolds Electronics sells transmitter and receiver modules that work at 315, 418 and 434 MHz

 

[strokedmaro]

exactically what I was looking for! Can someone tell me this: the TX and RX only send/receive information thats been encoded/decoded by IC's. Correct? If so, will any TX/RX be able to send any number of signals as long as the En/De can handle it? Thanks again!

 

[colin mac]

Whatever you put on the input of the TX, you get at the output of the RX. You could use microcontrollers if you wanted.

 

[MioTheGreat]

Whatever you put on the input of the TX, you get at the output of the RX. You could use microcontrollers if you wanted.

If you're going to use a microcontroller (An 8pin PIC will work), you're probably going to want to send a few 0x55s first, and then do some kind of error checking. A parity bit would probably be enough.

 

[Nigel Goodwin]

Whatever you put on the input of the TX, you get at the output of the RX. You could use microcontrollers if you wanted.

This isn't true, unless the TX/RX modules include encoders and decoders, you normally need to use some kind of coding system, of which Manchester is the most common.

 

[colin mac]

You're right, it depends on the module I should have said. The ones I've ordered from Sparkfun work like that.