SPEEDO:

Measuring speed and acceleration without acceleration sensor on your vehicle.

This project is based on precise time measurements using optical sensors and some computations the ESP32 processor is doing for us. The measuring method is accurate and universally applicable. Using optical sensors, it has great potential for a number of projects. 

We were showing the principle, the mathematics, the accuracy and a number of tests in our YouTube videos. In addition, we are providing here the files for 3D printing a suitable casing.

BOM:

1x ESP32 WiFi Bluetooth Dev Kit

8x Optional: Resistor 330 Ohms 0,25W 

8x Optional: Blue,Red, Green, Yellow, White LEDs

3x IR Proximity Sensor

4x Neodym magnets: diameter 12mm x 2mm

YouTube Links:

https://youtu.be/_BZrosT-hCM

https://youtu.be/aZsuF4vs7ds

https://youtu.be/g-p3zXgNHpw

https://youtu.be/FhTrE6C5zQE