Looking for TINY Rx/Tx modules - Electronic Circuits Projects Diagrams Free

strokedmaro · 11th July 2008, 03:40 AM

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 · 11th July 2008, 03:53 AM

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

SparkFun Electronics

transistance · 11th July 2008, 09:57 AM

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

Boncuk · 11th July 2008, 04:44 PM

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 · 12th July 2008, 02:58 AM

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

strokedmaro · 13th July 2008, 03:52 AM

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 · 13th July 2008, 04:12 AM

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 · 13th July 2008, 04:37 AM

Quote:

Originally Posted by 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.

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** · 13th July 2008, 12:31 PM

Quote:

Originally Posted by 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.

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 · 13th July 2008, 01:09 PM

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

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11th July 2008, 03:40 AM	(permalink)
strokedmaro	Looking for TINY Rx/Tx modules 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.

11th July 2008, 03:53 AM	(permalink)
MioTheGreat	SparkFun sells 315MHz radio transmitter/receiver pairs for $9. SparkFun Electronics Last edited by MioTheGreat; 11th July 2008 at 03:54 AM.

11th July 2008, 09:57 AM	(permalink)
transistance	I was looking for complete micro tx/rx modules. these are going to be very helpful! thx for posting __________________ transistance is futile...

11th July 2008, 04:44 PM	(permalink)
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

12th July 2008, 02:58 AM	(permalink)
MacFeegle	Reynolds Electronics sells transmitter and receiver modules that work at 315, 418 and 434 MHz

13th July 2008, 03:52 AM	(permalink)
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!

13th July 2008, 04:12 AM	(permalink)
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.

13th July 2008, 01:09 PM	(permalink)
colin mac	You're right, it depends on the module I should have said. The ones I've ordered from Sparkfun work like that.