Was listening to the Security Now podcast today and they had a section on power LED’s flickering when data is being sent etc. I had the idea which I am going to try using a LDR to see if you see anything usable. Then try and detect data I am sending back and forth. Its an interesting experiment.
I remember years ago a customer I was working with was able to read a device, but not program it. They sent me their code and I tried it on a board I knew worked the same and I saw no problem at all.
So I got them to send me their hardware and I tried it again, nope no programming. So I started testing voltages, and found that the programming on that device caused the input line to not supply the correct voltage it required for a logic level. Little mod to the board and it worked.
I assume (and you now what that means for U and Me) this is a similar thing, voltage draw on the programming/reading on the device is dragging down the supply voltage a little and making the LED flicker. The flicker would probably not visible at all to the human eye, but enough to be seen as noise on a camera or an LDR.
So there is a thing for me to try out and see what I see.
NOTE: Bryish is on hold for a while, as I start a new job working 4 days on and 4 days off 12 hour shifts. So my time will be limited, but hopefully my band account will fill up and I can fund more things to do here.
Thanks for the views and things so far, its been 3 years of failed funding attempts, not due to me by the way, every one ran out of money or had their funding taken away. Was all a complete waste of time. Will not do that again, lesson learnt. Anyway, laters taters.