Hi, this works! But with small changes. I have a need to tell you this. A few months ago, I struggled with this (then I didn't know how to read electrical schematics) and I didn't manage to put it together. But now, last night, I made it! It is very functional and useful! But how did I do it? Replace the 2.2uF capacitors with 1uF, also very important, replace the resistor around 47k with 4.7k, instead of connecting the minus to pin 1, connect it to the minus of the capacitor that goes from pin 3. This way, this works just fine. The buzzer buzzes, when you get close to the metal it changes the sound. Use a 9V battery to make it work nicely. I did not use an excessively long wire, if you use a very long one, a few meters, then you will have a stronger effect. It also works with a diameter of 10 cm, but I put 5 cm (I used the same length of wire). I put it through the rod and that's it. I also added an LED, connected in parallel with the buzzer so that I know when it is on, although the buzzer buzzes, for the sake of aesthetics, I like it. Greetings and cheers! I am available for additional questions! Update: Instead of using a resistor, use a potentiometer, I used a 100k. It is very easy and precise to set the diode and the buzzer to react only if the metal is approached. Greeting!
Hi Guitar A, I am inquisitive to make this circuit but won't be able to. Can you please make a video explaining how to make it and how it works, plus a circuit diagram so I can make one? Could you upload it on your RU-vid channel or send e to my email, please? Thanks.
@@tahamuzaffar007I'm sorry, I don't answer because every comment would be too long, and YT won't post it, doesn't accept it... I explained the most important things above... If you don't know something, just go to Google and search, thanks for understanding!
