Hi! Love this video was wondering if you could correct the link error for the step by step build from the schematic it doesn't seem to show up on your site. Thanks!
Thanks for mentioning that. Unfortunately, if I remember right, I completely scrubbed my website of my old diagrams and web pages when I started making them the way that I make them now. Nobody really visited the site back then, so I didn't try to preserve any of it. I deleted the link from this video.
This is a really great video and I enjoyed. I made this and it works. I used this on a Robotic System I was working on, so when a buzzer beeps, an LED blinks. I also created another Circuit and combined these two, so that the led would do a series of blinks when noise is made. This is the best video ever!! I just think the LM358 Op-Amp is so cool. I also love that you don’t just say “Pin 3”, you say “Non-Inverting Input” this makes a difference and helps people like me. Thank you and keep posting!!
Is there a good reason to replicate the voltage divider as you did? It seems as though a single one is all that's necessary (tapping off it in both places) Thanks!
This is the first time I made this circuit, after stumbling across a similar one. I'm sure there's tons of modifications that can be made to make it better.
@@Electronzap I played around a bit more with it, andended up using TIP31C after the 0.047 cap and from the collector to base of another 12 TIP31C transistors to power Leds and I can add onto it if I needed, and where you had yr voltage divider at the beginning (2 10k res) I changed the one to ground to a variable 10k so I can control the gain on mic, TIP31C are so cheap so why not, but now am waiting on MEL 7135 drivers to replace the transistors
So essentially the inverting and non inverting are set to the same voltage due to via negative feedback.. the microphone signal is riding on the inverting signal and the change of that signal is pretty much acting as a comparator.. very clever, thanks
