Whereas a typical scale would then simply show the resulting number on an LCD display, [Mirko] decided to use a moving coil meter driven by the Arduino ... with any analog sensor, calibration ...

Oh sure, it’s pretty cool to display your current gear selection on a little LCD screen using an Arduino ... build since he chose to use analog Hall sensors to detect the shift lever position ...

The primary problem for fitting such sensors to LCD screens was the thickness of the panel and the presence of a backlight, which stopped light from passing through the screen to the fingerprint ...