I found2 interesting projects for small Arduino oscilloscope. I want to use it as an audio visualizer in separate panel more than actual tool. Question is, witch one do you recommend more looking on the input signal ranges and code? For the second project I have spare LM1458N, will it fit instead of LM358N?
http://radiopench.blog96.fc2.com/blog-entry-997.html
http://radiopench.blog96.fc2.com/blog-entry-996.html
https://blog-imgs-138-origin.fc2.com/r/a/d/radiopench/20200427_OLEDosilloscope_V200E.txt