I try to use the RFM12B module with an arduino 2009. I can compile and load RF12Demo in the arduino.
I'm using these pins to connect the arduino with the RFM12b : 10 -> SEL 11 -> SDI 12 -> SDO 13 -> SCK 2 -> IRQ
I know that the RFM12B need 3V for these inputs so I use a simple voltage divider to bring the tension from 5 to 3V. I'm using the gnd from the arduino and the 5V for the VDD of the RFM12B. I think 3.3V is not enough maybe 5V is too much ? I don't have a pull up resistor I think I don't need it with the RFM12 module.
With that I'm able to use the Serial Monitor of arduino 21 and to send commands to the program.
The problem is that I can't see anything on the 2,11,12,13 pins of the arduino with an oscilloscope. To test it I'm sending commands like "t" to send a packet or simply "2i" just to see if there is anything.
Should I see anything on theses pins if there is a mistake on the circuit ?