- Calculates speed of revolving object by magnetic hall sensor
- Displays speed via servo in "analog-like" scale
- Displays odo (distance)
- Keeps traveled distance in EEPROM, so it is not zero after reboot
- Quick start with Arduino
https://www.instructables.com/id/DIY-Speedometer-on-Arduino/
- Arduino NANO https://ali.ski/ZKXvi
- Hall sensor https://ali.ski/QOzKMN
- Servo https://ali.ski/-QKlv0
- Display https://ali.ski/p9-Xt
- 5V dcdc step up hhttps://ali.ski/49cqYU
- Lithium charger https://ali.ski/P2leDa