Ring register[1 from 8] which seven speeds. The result is presented on 8 LEDs. After every cycle, speed grows. The process starts again after last 8 cycle.
This project shows the temperature on a three digit 7-segment display, it measures the temperature from -9.5 to 99 degrees Celcius in 0.5 C steps, or from 0 to 210 degrees Fahrenheit in 1.0 degrees steps. Because of the LED display the temperature is also readable in the dark.
