Multiple mqtt gateways via nrlf24l01 secure/unsecure

[Yoshu]

Re: Multiple Gateways

If possible what would be required to se up two separate mysensors gateways?
I want to have two seperate networks

• One using the full security and signing for some security crital equipment.
  -A second to be unsecure for non security critical components allowing quick easy setup of these nodes
  I will use the mqtt gateway or (ethernet gateway if the openhab binding become functional again ) and the nrlf24l01 radios on an arduino

[electrik]

Yes it is possible, as long as you use different channels for the communication so the gateways won't be confused. I have two gateways running also (I am using static node IDs), one with nrf24 and the other one with rfm69.

[Yoshu]

Hi Thanks for the reply!

If I used only nrf24l01 radios, (as I have plenty laying around) if I defined a different channel (and node Id) for the second network. Would this prevent confusion between the two networks rather then using a different radio type (rfm69)?

• @def MY_RF24_CHANNEL
• @brief RF channel for the sensor net, 0-125.
• Frequence: 2400 Mhz - 2525 Mhz Channels: 126
• http://www.mysensors.org/radio/nRF24L01Plus.pdf
• 0 => 2400 Mhz (RF24 channel 1)
• 1 => 2401 Mhz (RF24 channel 2)
• 76 => 2476 Mhz (RF24 channel 77)
• 83 => 2483 Mhz (RF24 channel 84)
• 124 => 2524 Mhz (RF24 channel 125)
• 125 => 2525 Mhz (RF24 channel 126)
• In some countries there might be limitations, in Germany for example only the range 2400,0 - 2483,5 Mhz is allowed
• http://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Allgemeinzuteilungen/2013_10_WLAN_2,4GHz_pdf.pdf
  */
  #ifndef MY_RF24_CHANNEL
  #define MY_RF24_CHANNEL 76
  #endif

[mfalkvidd]

@Yoshu yes, different channel is sufficient. Maybe a few channels away from the default/other network to avoid crosstalk.

No need to use different nodeID.

[Yoshu]

@mfalkvidd Cheers! This project will keep me occupied for my 2 week hotel isolation stay.