Interfacing a Sigfox module
In this section, we will discuss interfacing a Sigfox module with the Raspberry Pi Pico. Before we get started, let's take a quick look at Sigfox.
What is Sigfox?
Sigfox is a type of Low-Power Wide Area Network (LPWAN) that is operated by a French company of the same name. Sigfox radios have a range of about 10–30 km, and the network operator restricts the total number of transmissions to 140 messages per day with each message restricted to 12 bytes. This type of network is suitable for battery-powered wireless nodes deployed at scale. Sigfox typically operates in unlicensed ISM radio bands ISM refers to Industrial, Scientific and Medical bands. As the acronym suggests, it is meant to be used in those applications without a license. In the US, it is typically 915 MHz. You can learn more about Sigfox here: https://build.sigfox.com/sigfox.
Sigfox's future
At the time of writing this chapter, Sigfox filed for bankruptcy protection...