[ot][spam][crazy] The Trials of Controlling a Programmer

[Undiscussed Horrific Abuse, One Victim of Many]

I asked in the old rtlsdr chat regarding this and learned about buffering,
and electrical engineering concept.

Without sorting buffering out, I did find I have an optoisolator, a
potentiometer, and a few transistors from the nyansat kit. I wired the
potentiometer in and just judging it visually, it kind of looks like there
is a weak association between value and voltage from 0V-1V and then a very
strong association from around 1V-1.4V or something like that. It reminded
me a little of the shunt resistor diagram from the laptop. (I also saw
different, less distinctive, behavior when reverse polarized).

I recall there were also strong spikes seen when tuned to a frequency, when
the voltage changed.

So basically this isn't going to be an oscilloscope quickly, but would
indeed work as a quick and messy logic probe.

I'm thinking I might just kind of move forward on logging data from the
lines in any adhoc manner that can be correlated.

The rtlsdr maybe has more utility than the oscilloscope here, because it
has an api I can wire to data storage and event information. Even if the
signal is heavily transformed by shoddy circuitry.

I do not have anything visual at this time. I am just looking at scrolling
numbers.

Assuming I can work through the double inhibitions, logging multiple
event-synchronised signals and plotting them would be a good step for me.

Maybe in c/c++ so the code would be easily portable to a more embedded
device that might be capable of bitbanged probing.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/html
Size: 2001 bytes
Desc: not available
URL: <https://lists.cpunks.org/pipermail/cypherpunks/attachments/20220406/051cc8a8/attachment.txt>