I made an "analog" bike speedometer using an arduino nano and a servo : r/electronics
Arduino Based Analog Speedometer Using IR Sensor
DIY Bike Speedometer and Trip Meter Arduino and IR Sensor - YouTube
Motorcycle Digital Speedo With Arduino – Martyn Davis | Marengo
One of the reasons I love arduino is the ability to make what I need quickly, often with stuff I have laying around. Like this bike speedometer, because the wire for my
Arduino + LCD Display as a Bicycle Speedometer - Hackster.io
Digital Speedometer With An Arduino | Hackaday
DIY bike speedometer Arduino - YouTube
Arduino Bicycle Speedometer Using GPS - Hackster.io
DIY Speedometer using Arduino and Processing Android App
Make an “analog” bike speedometer with Arduino | Arduino Blog
Bicycle speedometer with Arduino
Android Display for Arduino Speedometer Using Bluetooth - Cohesive Computing
Arduino Bike Speedometer With 128 X 64 Graphics LCD : 5 Steps (with Pictures) - Instructables
Bicycle Odometer and Speedometer « Adafruit Industries – Makers, hackers, artists, designers and engineers!