Looking for TINY Rx/Tx modules

S

strokedmaro

New Member

• Jul 10, 2008

• #1

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

New Member

• Jul 10, 2008

• #2

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

SparkFun Electronics

 

Last edited: Jul 10, 2008

transistance

New Member

• Jul 11, 2008

• #3

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

 

Boncuk

New Member

• Jul 11, 2008

• #4

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

 

M

MacFeegle

New Member

• Jul 11, 2008

• #5

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

 

S

strokedmaro

New Member

• Jul 12, 2008

• #6

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!

 

C

colin mac

New Member

• Jul 12, 2008

• #7

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

New Member

• Jul 12, 2008

• #8

colin mac said:

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

Click to expand...

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

Super Moderator

Most Helpful Member

• Jul 13, 2008

• #9

colin mac said:

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

Click to expand...

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.

 

C

colin mac

New Member

• Jul 13, 2008

• #10

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