Nordic nRF52840 Dongle is a small, low-cost USB Dongle that made its first appearance in 2018. It also supports Bluetooth 5, Bluetooth mesh, Thread, ZigBee, 802.15.4, ANT, and 2.4 GHz proprietary protocols. Nordic has priced the Bluetooth Dongle at $10, so it is quite a good bargain in their opinion. However, for many customers, the nRF52840 Dongle price is too expensive. Moreover, there are still...