Thank you skywatch for your answer. I am talking about RF 433MHz and i have succesfully decode and resend RF commands by connecting RF transmitter and receiver on arduino like this project here: http://www.libremechanics.com/?q=node/31
How can i combine these sketches to make a mysensor node which will be able to read and send the RF commands?

Hi,
I want to make a node to send RF codes to control different devices (alarm system, some switches) which already are controlled from RF remote control. I saw in examples only RF receive decode node. Can anybody help me with RF send?
Thank you.

Hi everybody.
I am running homeassistant on raspberrypi and i have serial gateway on raspberry. I have made 2 nodes with temp hum sensor and they are working fine but i see this warning everytime i reboot homeassistant ''Node 2 is unknown'' the same also for node3. What that means and should i just ignore it?
Also i see this warning ''child_id 1 already exists in children of node 3, cannot add child''

Thank you.

The one chip U4 is high accurancy temperature and humidity sensor. I think its better temperature sensor than the internal temperature sensor of BMP180.

Try persistence: false

If we use pin 22 for CE and pin 24 for CS it is not necessery to declare as you said. But if we want to use other pins we need to declare. I havent try though with other pins.

Because in 1.5-2 years many things are changing. Did you try my config?

2 years ago were you using version 2.3.1 ?

As kebibg said you must also configure the pins for CE and CS. The configure i used was :

--my-transport=rf24 --my-rf24-pa-level=RF24_PA_LOW --my-gateway=serial --my-serial-is-pty --my-serial-port=/dev/ttyUSB020 --my-rf24-ce-pin=22 --my-rf24-cs-pin=24 --my-rf24-irq-pin=15 --my-leds-err-pin=12 --my-leds-rx-pin=16 --my-leds-tx-pin=18

Also you must connect MISO to pin 21, Mosi to pin 19 and CLK to pin 23 on raspberry

I have problem to verify the sketch of Sonoff and i tried also ESP8266 gateway and also i cant verify. Arduino IDE returns the error:

Arduino: 1.8.7 (Windows Store 1.8.15.0) (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, 4M (1M SPIFFS), v2 Higher Bandwidth, Disabled, None, Only Sketch, 115200" In file included from \Arduino\libraries\MySensors/MySensors.h:405:0, from \Arduino\libraries\MySensors\examples\GatewayESP8266\GatewayESP8266.ino:132: \Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:57:53: error: declaration of C function 'void ets_update_cpu_frequency(int)' conflicts with extern "C" void ets_update_cpu_frequency(int freqmhz); ^ In file included from \ArduinoData\packages\esp8266\hardware\esp8266\2.4.2\cores\esp8266/pgmspace.h:10:0, from \ArduinoData\packages\esp8266\hardware\esp8266\2.4.2\cores\esp8266/Arduino.h:256, from sketch\GatewayESP8266.ino.cpp:1: \ArduinoData\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/include/ets_sys.h:218:6: error: previous declaration 'void ets_update_cpu_frequency(uint32_t)' here void ets_update_cpu_frequency(uint32_t ticks_per_us);

What its wrong?