@flopp It seems to work, index on Domoticz is still consistent with the real index... I will see in a few days if it's still the case.
Thanks a lot for your help !

Hello,

I'm french, so my english might be strange sometimes...

I use RFM69W to communicate between Arduino Nano Serial Gateway and prototype sensor, based on Arduino Duemilanove.
As it's written in the title it doesn't work.

You can see here below the gateway log:

0;255;3;0;9;MCO:BGN:INIT GW,CP=RRNGA--,VER=2.1.1
0;255;3;0;9;TSM:INIT
0;255;3;0;9;TSF:WUR:MS=0
0;255;3;0;9;TSM:INIT:TSP OK
0;255;3;0;9;TSM:INIT:GW MODE
0;255;3;0;9;TSM:READY:ID=0,PAR=0,DIS=0
0;255;3;0;9;MCO:REG:NOT NEEDED
0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.1.1
0;255;3;0;11;Thermostat Meuble NAS-Box
0;255;3;0;12;1.0
0;0;0;0;6;
0;1;0;0;3;
0;2;0;0;6;
0;3;0;0;6;
0;255;3;0;9;MCO:BGN:STP
0;255;3;0;9;MCO:BGN:INIT OK,TSP=1

And herebelow, the sensor log:

0 MCO:BGN:INIT REPEATER,CP=RRNRA--,VER=2.1.1
3 MCO:BGN:BFR
5 TSM:INIT
6 TSF:WUR:MS=0
8 TSM:INIT:TSP OK
9 TSM:FPAR
139 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2146 !TSM:FPAR:NO REPLY
2148 TSM:FPAR
2278 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
4285 !TSM:FPAR:NO REPLY
4287 TSM:FPAR
4417 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
6424 !TSM:FPAR:NO REPLY
6426 TSM:FPAR
6556 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
8563 !TSM:FPAR:FAIL
8564 TSM:FAIL:CNT=1
8566 TSM:FAIL:PDT

Of course, both have the same MySensors library version (2.1.1, also tested with 2.1.0 and 2.0.0).
47uF capacitor has been added between 3.3V and GND in sensor and gateway.
3.3V is provided by Arduino Nano in gateway and Arduino Duemilanove in sensor.
In order to adapt arduino voltage, an "8 Channel I2C IIC Logic Level Converter Module Bi-Directional for Arduino" bought on eBay is used to convert 5V <=> 3.3V for RFM69W I/O.

I've browsed forum topics find on Google, but nothing works.
Of course, I've started by following the page "Debugging Sensors and the Gateway"

I've just made a strange observation, when I connect the sensor and the gateway on my computer USB, if I connect or disconnect the gateway USB from my computer, the LED "L" on my arduino duemilanove (sensor) blinks several times before recovering its initial state.

Could you help me please ?

If I can give you more informations, do not hesitate.

Thanks in advance for your help !