A flash comes to my mind: what about static electricity buildup on the trolley itself?MichelJasmin Today, 15:57
I'm not a professional; I'm a hobbyist. My only qualification is a lack of expertise that has lead to many similar issues - odd, inconsistent behavior that seemingly comes from nowhere. For me, it...Amoque Today, 15:06
How much current can the reed switch sink (datasheet link?) and what value do you have on the pullup resistor?
It might suffice to simply put in a stronger pullup.
Another thing to think thru is...