Two months to go from 1.0 V (!) to nearly zero
Search Results for: lm3909
As good a use for dead cells as I can think of
The LED waveform shows it needs about 2 V
It’s still flashing
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
