I will show you how to build a bike speedometer. It shows your speed,
the average speed,the temperature, the trip time and the total distance. You can change it using the button. Additionally, the speed is shown on a tachometer. I built it because I like building new things, I have not found anything like this on the internet so I want to show you how to build a good speedometer as the one on my bike is not as cool as I want :) . So let's get started.
This is a list of parts that you will need. They cost me about $ 40 but I bought them in Poland.
-bike with reed switch
-LCD display 16x2
-resistor 1.2k Ω , 4.7k Ω
-potentiometer 10 kΩ
-tools (drill, soldering, knife, tape)