This project is about a simple inclinometer featuring auto rotation of display.
This inclinometer can be rotated in any position keeping the digits readable even upside down!
It is controlled by an Arduino 101 driven by accelerometers to read the tilt angle of X-Y axes.
Additionally, there is a feature to show the ambient temperature in Celsius or in Fahrenheit degrees.
The assemble is very simple and I hope you have fun using it!”

Link