It’s still flashing
Search Results for: lm3909
A 1 MΩ resistor serving as a mechanical strut
The LED lights brightly, then fades away
A dirt-cheap single-trace oscilloscope can get you quite a ways to the goal
Confirming the cap doesn’t enter reverse-charge territory
The pretty plots are more along the lines of serving suggestions
The pulse now lasts long enough to charge the cap nearly half a volt in the wrong direction
