I am struggling with the getting started example in the RF24 lib and cannot track down the source of the problem.
I have one Uno R3 and one Diecimila and two NRF24l01+ with chip antennas. I have soldered a 10uF capacitor between the ground and Vcc on both NRF24l01 and connected the directly to the Arduinos. I have used both USB power and external battery powered input for the Arduinos. I have checked that the Voltage is 3.3 V on the radios. I have turned of my wifi to exclude that interference.
A couple of days ago I actually got this example to work with exactly the same hardware but now I see this behavior:
Switch A (UNO) to Transmitter: Now Sending 50125...failed Failed, response timed out Nothing gets out from the radio...
Switch UNO to Receiver, Switch Diecimila (B) to Transmitter: First two messages sending OK, response OK, roundrip delay 23 and 25 Then: Sending fails, but Uno gets messages and responds, but the response is not received in Diecimila. A few transmits are successful.
Now sending 54467...failed. Failed, response timed out. Now sending 55744...ok...Failed, response timed out. Now sending 56962...failed. Failed, response timed out.