Summer has been relentless this year. My passion for Bitcoin mining took a major hit due to the immense heat from my miners and the electricity costs required to keep them cool and running. There were times when the miners overheated so badly that I had to shut them down "manually" to prevent a fire hazard.
To automate the shutdown and restart process and to enable remote temperature monitoring, I built an RGB thermometer with its own web interface that can control home appliances based on temperature changes.

Watch this video, for detailed step by step instructions on how to build this circuit and to know how this circuit works.

YouTube: https://youtu.be/WecOhmHxspg