I have two arduinos, a mega and a uno each with RFM69HCW modules attached. I can run software from Adafruit that shows communication between both devices. Ack and encryption seems to work. Both devices send and receive. However I am having trouble getting the example code from the SparkFun site to work.
When I try to send from node 1 to Node 2, it sort of works the first time and then no longer. On the first send, the receiving node receives the message but it seems no ack gets sent. The next time I try to send, it looks like the sending works but there is no receiving on the other side. Something is hung up and I cannot see the problem.
Anybody else put there having this problem?