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# Measuring mash temperatures with custom equipment
# Measuring mash temperatures with custom equipment 🍺 🌡️
![alt-text](@asset/1.png)
For yesterdays brew I wanted to improve something in the brewery, namely having a dedicated thermometer so I don't have to steal the one from the kitchen. I looked at what I had at home to see what I could build for cheap and dug up an old nodemcu, the esp8266 variant and remembered that I set it up with esphome sometime last year. After a quick check at the esphome documentation I found out that esphome supports the dallas ds18b20 temperature sensor which I have one of at home already but i picked up a couple more since in knew I wanted to be able to measure multiple things at the same time.