@Yveaux Thanks for your response. I guess that's it. I have to burn a bootloader first :-). I have a USBasp Programmer for that. Can you point me to a wiring diagram that shows how to connect the programmer to the circuit board?

@epierre I normally use a reflow oven and in your case I had to use a heat gun.

I finally made them work I was not using the right clock for programming, 16MHz instead of 8MHz... Thanks @AWI

Hi.... hehe... I must decode it from source code?? hmmmm... interesting... where I need to write my question? power down mode .. every 1 sec wake up .. using timer2 32kHy crystal 2.make sensor with more sensor type in one device .. for example .. temperature , energy meter, bin input state.. etc..

RFduino uses BLE (Bluetooth Low Energy). While this is also 2.4GHz it's not compatible with nRF24L01 in terms of protocol.