Just some information to other people that are trying to get two RFM12b’s up running.
After installing the JeeLabs software and running the RF12Demo I got the OK ack as described in my ealier post today. But I had some difficulties to figure out how to send data from one Arduino to the other with only one computer connected. Because of fustration I installed the LowPowerLab (Felix Rusu) · GitHub as the forum user oric_dan suggested yesterday. I then installed the example program SEND on one Arduino and RECEIVE on the other and BINGO, it just worked out of the box. I only had to configure the NODEID, NETWORKID and GATEWAY, but that was simple
It was not possible for me to find this information elsewhere, so I hope someone can use his thread ?