• It works! (With noise)

    Hannah • 09/30/2018 at 01:04 • 0 comments

    So here it is in its breadboard beauty:

    There is one difference: I added a 100nF cap between the input and potentiometer:

    And I am a broke student so my... wiring... is interesting, to say the least. I need to just get a breadboardable aux input:

    Oof. And now to the results! It gets loud. I only had one aux cord around, so I had to test it with my headphones. RIP. I used my scope to show the amplification:

    Very Nice. Only one problem. It's extremely noisy. The eternal hiss is very much present along with this weird blip:
    The hiss is probably a mix of my fantastic washi tape wiring and headphone use, but the blip is probably coming from the power supply. I will eventually use a better supply, but I'd like to make it work decently even with a mediocre voltage source. I'm researching it, but haven't come up with any good solutions yet.

  • Finally Getting Somewhere

    Hannah • 09/28/2018 at 02:51 • 0 comments

    So here is my LTspice schematic:

    Note that R4 is a pot and there is another pot right after Vin. I simulated a 0.1 V sine wave and got this:
    NICE. All the parts came in now, so onto the building!

  • Almost Ready... To Start

    Hannah • 09/06/2018 at 12:47 • 0 comments

    Some of the parts came in, should be ready to start building soon.