Noob question about 9v battery snap

[Leopold T]

Hi guys. I'm trying to make a fuzz pedal following this schematic. Originally this was supposed to work off a wall wart input, but I want to use a 9v battery.



So, my noob question is this: I know the red wire on the battery snap goes to R2, but where does the black wire go? Do I connect it to all the earth wires or what?

[garcho]

yes, you are correct, all the grounds (arrows pointing down) are connected to battery - (black) and R2 is connected to battery + (red)

[Leopold T]

Thanks.
Actually that's the way I've put it together, but something is still not working. The signal is really really faint.

What I've built doesn't include the diode though. I don't have one at the moment and I figured the pedal should basically work without it, and I could could add it in later. Maybe that was a foolish assumption.

[garcho]

yes, foolish. unless you understand how electronics work, i wouldn't omit any components from a schematic. the fact you omitted the diode is why it doesn't work.

[Ben Lyman]

Do you have any LEDs? Those are diodes too, I have even pulled a few from xmas tree light strings.
Bazz Fuss sounds great with a red LED, especially with a bass. It won't be super fuzzy like it is with a 1n4148 but it's still a cool sound, more like an overdrive

[Mark Hammer]

ALWAYS assume that there is a risk you have misinterpreted the pinouts on a transistor.  Sometimes, looking at the flat side with pins down, it's EBC.  Sometimes it's CBE, sometimes ECB, and sometime BCE.

[Leopold T]

Thanks for the suggestion, I will absolutely put an LED in there and see what happens.