@rozpruwacz Sorry, it's hard for me to work on this subject during week days. I2C is in the code, I'm just trying to find a generic solution. Currently, my raspberry has only the nrf24, therefore, I'm probably not using I2C. My configure options are: ./configure --soc=BCM2835 --my-gateway=ethernet --my-port=5003 --my-rf24-encryption-enabled --my-rf24-channel={{ rf24_channel }} Note that since my network is only sending information (nothing is controlled), I'm not worried about not using signatures between nodes. I enabled it in the past but then, disabled it.