Elektor's newly released book, Building Wireless Sensor Networks with OpenThread, not only presents a massive amount of background information on building and programming your own networks to read sensors of all sorts, it also shows practical applications using a Nordic Semiconductor nRF52840 dongle, which is supplied with the book. Let’s examine such a use case to see if it's really a stroll in Low Power Park along with Zephyr, CoAP, Wireshark, and Nordic.