I tried a new cable on the dso nano and it works much better. So, flashing the firmware of that is available now.
On Wed, Apr 6, 2022, 3:23 PM Undiscussed Horrific Abuse, One Victim of Many <[email protected]> wrote: > 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. > > > > >
