LCD Speedometer wier?

[Pfnyq]

Hello, i have a sensorless controller so i dont have any hall wiers to get a speed signal reading from. Is there any other way i can connet this speedometer (purple wier).
My e-bike dont have the 5 LCD connetion allso. Now i only use the positive and negative so i get a battery reading, but i wan km/h too!
Do you guys now a way?


https://www.aliexpress.com/item/LCD-display-48v-72v-speedometer-with-turning-light-for-Electric-bike-SCOOTER-tricycle-motorcycle-battery-level/32795501221.html?spm=a2g0s.9042311.0.0.mepYIR

 

[d8veh]

Simple - use a wheel speed sensor. I guess you need a 3-wire one that you can get from Aliexpress, BMSbattery, or a supplier of ebike kits/accessories.

 

[Pfnyq]

Thank you i will try that!