For my speedometer, I have a “Planet Bike Protegé 8.0 Bike Computer”. It has been working great for 2.5 years on my Bacchetta giro 26. I replaced the battery at the 2 year mark because the display was getting a little dim. This past winter, it has stopped working when temperature is <60F. The battery is still good. I have cleaned all contacts. I have the magnet as close as possible to the sensor (0.5mm, wow!). But alas, the computer gets no signal until the temperature rises.
I’m just wondering if I need a stronger magnet? Any ideas why it doesn’t work all the time?