I would like to know if someone has done it or, at least, tested (mathematically,) the idea of, with an appropriate size led-matrix, construct a 'kind' of oscilloscope & for what range of frequencies it's useful?
The idea occurred to me the other day while browsing this very site when I stumbled into a post of a matrix of leds. Sorry, don't remember what was the purpose of the circuit nor the amount of leds involved.
Thanks in advanced for any comments on the subject!
Note: If it can be done with a frequency response of at least 250 KHz it has potential practical uses!
