This was my first Linux Day in Turin, and I was late, like very late (as always 😂 ).

I decided to attend the IoT talk ‘cause I’m interested about this topic.

The speaker, @cesco_78, talked about how the tech companies are deploying a lot of devices, rapidly and they haven’t so much worries about security and stuffs like that.

You can find the notes here:

IoT

There’re a lot of IoT devices

Problems

Solution

They’re a Low Power Wide Area Network. They use free frequencies. The range is great.

LPWAN aren’t Internet backed.

So a cluster of sensors is connected to a gateway. The gateway is then connected to internet.

SigFox

Less data and slow.

12 bytes/3 seconds

SigFox uses resellers and it’s a commercial network. The price is big and it’s billed “per-device”.

Western Europe is fully covered.

The advantages are:

Compatible devices:

LoRa

Choosing a low power, data service is difficult. The decision has to be taken “per-project”.


Alternatives

If you have a network (WiFi/3G/4G) and if you want to transfer data without using a lot of bandwidth you can use:

MQTT

Message Queue Telemetry Transport

It uses a broker, subscriber and publisher infrastructure.

Configuring a MQTT connection to/from a broker is dead simple.


As you can see, IoT is a great thing.
If we’re able to avoid big manufactures we can get back our data.