Ismail Uddin has a great blog post about how to make a NeoPixel temperature gauge with a Raspberry Pi. A thermistor is used to measure temperature using a nifty trick that doesn’t require an analog to digital converter, and a NeoPixel ring lights up based on the measured temperature value. There are even details on how to log the temperature data to a service like Plotly so it can be monitored from anywhere. Great job with the project!
Be sure to check out the Science Exposure blog for other science and Raspberry Pi projects!