Originally Posted by mike-tt special
great to see that you got the light sensor idea working babushka
my turn to ask some questions baring in mind i know very little about electronics and i'm reluctant to disassemble my speedo.
if i taped a light sensor to the speedo glass above the LFL would light bleed from the speedo illumination light trigger the light sensor. and if so could i tune out the sensors sensitivty to back ground light with a different sensor or resistor.
I am certainly not the electronics pro, but from all the experience i've been through with my sensor, I don't think it would work. Too many other lights. If you look at the pics I posted, I had to use the black heat shrink wrap tubing to further isolate the source of light. Damn thing was so sensitive, that even through white plastic, when the neighbor LEDs would go on, it would interfere.
As for resistors, I proved in practice that laws of physics and theoretical design had nothing to do with getting this project working. In fact everything that made sense on paper and calculator, proved to not work irl. I suspect my sensor was not specced correctly. Maybe if you can get your hands on a good sensor, you could get somewhere with regulating sensitivity.
My only advice is to take the speedo apart, if you decided to permanently remove it. It is not difficult at all, but be aware if you decide to reassemble it back, it probably not be the same cosmetically. I can help you with what I did, if you need.
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