Hello people
I'am from Germany and i have a little question. I have two Arduino Leonardo and two RFM12 433MHz. The only thing i want to do is to send an digital I/O Signal from Ardino 1 to Arduino 2. The first question is how to connect the RFM12 to the Arduino, the second Question is, how to programm this little programm. (connect a little button with Arduino 1, send I/O Signal via RFM12 to Arduino 2 which runs my program by pressing the button.
The first question is how to connect the RFM12 to the Arduino
Connect the correct pins on the radio to the correct pins on the Arduino. Since you haven't provided a link to the radios, you are on your own there.
the second Question is, how to programm this little programm.
The IDE works great for that. If, for some reason, you don't like the IDE, you can use a text editor or there are alternatives to the IDE.
The only thing i want to do is to send an digital I/O Signal from Ardino 1 to Arduino 2.
Typically, the radios are use to send text. One Arduino detects that an input occurred, and sends some text to the other. The other one then sees the text, and knows what to do when that text arrives.
The first one might see that pin 8 went high. It could then send "Turn pin 8 on" to the second Arduino. The second Arduino would see this text, and know what to do.
Of course, you could send other text that was a bit lighter, and that was easier to parse (like "[8,1]") to make it easier to affect different pins in different ways.