There are so many limitations tied to Bluetooth, and it certainly causes its fair share of frustrations. But there’s also a unique niche that Bluetooth fills. To find out which Bluetooth. I decided that the first step would be to build a prototype on a breadboard.
FigureArduino code for temperature convertion. You will then need to set up your Bluetooth module, figure will show how to connect a Bluetooth module like the one I used in this project to the previous.
A voltage divider is required to connect the TXpin of Arduino to RX pin of the module since this accept online 3. Brifit Wireless Thermometer Hygrometer, Bluetooth 5. LE technology to get data from long distance, it can work from internal battery up to 3days! Collected temperature and humidity information of the surrounding environment is transfered to FMB device which has possibility to support up to four temperature sensors at the same time!