On 6/3/26 10:36, Stefan Monnier wrote:
They are also going to be polled, and will return the voltage they find
at polling time. What they won't tell you is what various ripple
voltages are, both the initial rectified mains at 100/120Hz and the
residual switching frequencies of the various step-down regulators.
Yeah, I think we'd need a kind of sensor that doesn't give just the
current voltage but gives a bracket of the lowest & highest voltage seen
since the last measurement, or one that can trigger an interrupt if the
voltage ever goes outside of a given range.
I want something that does a Fourier transform of the voltage data so I
can see if there's ripple at any particular frequency. A live waterfall
plot would be wonderful.
