[Edward], creator of the Cave Pearl project, an underwater data logger ... using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno clones ...

This video demonstrates how to set up a remote temperature monitoring system using an Arduino Uno R4 WiFi, an LM35 temperature sensor, and the MQTT protocol. The system captures ambient temperature ...

It is an Arduino compatible board (hardware ... connector (for the usual nRF24L01 2.4GHz radio), one power & user LED and finally a reset button. There are two power rails on the board which ...