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Anyone IoT?

1449 Views 8 Replies 6 Participants Last post by  Lariliss
Though I am more familiar (experienced) in PIC, hence Arduino, the Raspberry Pi vs Arduino is a question of what you have in hand and how much time do you have at your disposal.
There is a good example of model of controlled railway, including hardware, coding and connection steps.

After several personal trials, I have went through it as well.
Is there any body out there? With IoT experiments?
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I came across an article recently where a fella in a UK model railway club had used either Arduinos or Pis (I don't remember which) extensively on a layout. It worked well until he took the layout to an exhibition where there was enormous amounts of 'interference' which had the effect of crashing the system. Apparently, each of the devices had their own Wifi module and became overloaded (and crashed) by all the mobile phones at the exhibition which were polling to make contact.

Going forward, I think solutions to this issue need to be found. I'm not sure that every device on a model railway necessarily needs to be connected to the internet. A safer solution might be to have them all on their own private network communicating with a suitably 'beefed up' base station. The base station could connect to regular wireless. Of course, this is a 'hub' type arrangement as opposed to a true IOT configuration, but if interference due to use of a common network is causing a problem, maybe it isn't the way to go.
2.4GHz Wi-Fi is too crowded for exhibition use, if you are going to use Wi-Fi it has to be a 802.11ac or newer 5GHz router with beam-forming (the type that has at least three aerials). Fortunately the new Pis have 5GHz Wi-Fi so can be used, but otherwise you will be best using a more resilient wireless solution such as Zigbee with a gateway to Wi-Fi.
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