RF COMMUNICATION OF MESSAGE WITH MICROCONTROLLER

[ORGENES]

Hi...
I have a project to design and implement a circuit which will send message encrypted in micro controller through RF technology from RF transmitter to the RF receiver separated at a distance of about 100M. Now i want to use RF modules operating at 433MHz and two micro controller. The problem here is a circuit which will take signal from micro controller to transmit to the receiver and what values of components such as(resistors and capacitor ) will be used to stabilize circuit.

Any one have more idea about that circuit diagram, please help me even a link to follow.
Thanks.

[pebe]

Have you decided on which RF modules you will be using? Many have simple logical high/low inputs and outputs that can interface with the micros directly.

All you then need is micro software that can send/read the data.

[ORGENES]

Thanks...
I decide to use TX 433MHz as transmitter and RX 433MHz as receiver. These have no pins digital pins hence i decide to use RF Decoder and RF Encoder, before micro software to read data, how will a circuit be?.

[pebe]

This pair of modules has data pins for normal 0-5V logic.
Use 5V for the Rx and up to 12V for the TX to get the range you require.

http://www.ebay.co.uk/itm/433Mhz-RF-tra ... Sw2s1UrXSE

It needs only simple sub-routines to send and receive serial data, a byte at a time, from a micro; each byte with a start and a stop bit (10bits).