Home

Jump to bottom

zStamler edited this page Oct 12, 2017 · 11 revisions

Welcome to the Speedometer wiki!

Magnetic speedometer with display. Reads angular velocity using wheel-mounted magnet and Hall Effect sensor, outputs data on yet-to-be-determined visual display. Based on STM32F072 MCU.

###MUST

Take input from sensor
Convert analog voltage to digital data
Calculate speed based on angular velocity, convert to mph
Display in clearly visible way
Low-voltage operation and small, weather-resistant package suitable for mounting e.g. on bike, skateboard

###SHOULD

User-Parameterizable wheel diameter
Different units (kmh, m/s, rpm, etc), selectable at run-time with some visible mode indicator.
Resettable distance/trip monitor

###BONUS

Phone connectivity/interfacing eg through Bluetooth or similar
Charging capability, perhaps using solar.