One ring to rule them all, and in the infrared light, bind them! With this thermometer ring, I thee wed! I fell down, down, down, into the burning thermometer ring of fire! Ok, we could do that all day. Thermometers have come a long way from sticking a piece of glass with toxic liquid metal under your tongue. Here’s a great project on making an infrared thermometer ring, from Gokux via hackster:
An infrared thermometer is an essential tool for rapid, accurate, and contactless temperature measurements. I used this tech to create a DIY smart coaster. That project inspired me to build a wearable infrared thermometer ring.
As the name suggests it is an infrared thermometer that can be worn like a ring on the finger. The thermometer has an infrared temperature sensor under the ring, and the temperature reading is displayed on an OLED screen on top of the ring. For this project, I used the Xiao esp32c3 microcontroller, and I incorporated a built-in BMS for recharging the battery. Additionally, I used the MLX90614 Non-Contact Precision Thermometer Module, which provides fast temperature readings ranging from -70°C (-94°F) to +380°C (+720°F).The sensor does not need to have contact with the subject to measure the temperature. You can get a reliable measurement from 2cm to 5cm away from the subject.