Multiple buildings - two gateways or repeaters?

[namomitk]

I have two buildings on my property. In building A, I have setup an RPi3 with HomeAssistant as a controller and using NRF24 configured as an MQTT Gateway. I have configured a few sensors and successfully report them in Hass.

I would like to expand to building B. Wifi and LAN reach building B.

I have:
Arduino UNO R3 / W5100 Shield

Can I use the MQTT Gateway sketch? Will this be a problem if the Arduino picks up on one of the sensors from Building A?
OR
Should I use the Repeater node sketch? Is this as flexible? Can I still attach sensors or actuators to the repeater node?

Any tips?

I've searched and searched and can't seem to figure out the best way or a functional way of setting this up.

Thanks in advance.

[mfalkvidd]

A MySensors network can only have one gateway. Therefore, you should probably have a separate network for building b. The networks are separated by using different radio channels (#define MY_RF24_CHANNEL , see https://github.com/mysensors/MySensors/blob/dd9dff77ed1948db2b348bbdb82d0d3daa9e8e3a/MyConfig.h#L544 For details)

Sensors and actuators can be attached to repeater nodes, but adding a repeater node will only help if the repeater node is able to forward the messages so they reach a gateway.

[namomitk]

This post is deleted!

[namomitk]

@mfalkvidd

That makes sense. I think I can run with that.

So Building A would run on CH76 by default. Building B I would select a different channel for the gateway out there and configure the sensors/actuators to communicate on that channel, say 124.

When I setup the MQTT gateway for building B, can I publish/subscribe to the same topic prefix as building A's gateway or do they need to be different? If both "networks" had a relay node 1, would telling one of them to "turn off" cause them both to turn off. I imagine the payloads would be the same?

[mfalkvidd]

@namomitk I think you would need different topics. As you said, there would be trouble differentiating the nodes otherwise.

[namomitk]

Edit: Found this in the forums. Is it still relevant or did 1.6.15/16 solve the issue? https://forum.mysensors.org/topic/4680/mysensors-2-0-ethernet-gateway-atmega-w5100-restart-all-time/3

I've setup the UNO with the default sketch and made the changes to make it a separate gateway.

I'm seeing the following on repeat. I've tried a few changes here or there to no success.

Serial output shows:

IP: 192.168.4.35
0;255;3;0;9;Attempting MQTT connection...
0;255;3;0;9;MQTT connected
0;255;3;0;9;Sending message on topic: mysensors-outb/0/255/0/0/18
0;255;3;0;9;Message arrived on topic: mysensors-inb/3/255/3/0/6
0;255;3;0;9;!TSF:MSG:SEND,0-0-3-3,s=255,c=3,t=6,pt=0,l=1,sg=0,ft=0,st=NACK:I
0;255;3;0;9;MCO:BGN:INIT GW,CP=RNNGA--,VER=2.1.0
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

Mosquitto log shows:

1483156702: New connection from 192.168.4.35 on port 1883.
1483156702: New client connected from 192.168.4.35 as mygateway2 (c1, k15, u'pi').
1483156717: Socket error on client mygateway2, disconnecting.

Any ideas?