I made a digital thermometer using the following components:
I made the thermometer myself (with the help of Arduino). The entire project has a power consumption of only about 50 mA.
The wiring is simple. The most difficult part was figuring out the pin-out of the chosen LM75A module. It is actually designed for Raspberry Pi, where it is simply inserted. So based on the pin layout on the Raspberry, I created this professional diagram:
Pin layout on LM75A
And the entire wiring looks like this:
Thermometer wiring diagram
You can buy the entire kit, including assembly instructions, on my eshop bastlíme.eu and support me in further DIY projects.