Eight Ball Overdrive

[JimL]

I populated the PCB today. Got some help with one item: the 2sk209g orientation. FYI: I used an adaptor and did not consider the girth of a 220u cap. It was a tight fit and something to consider. I decided to go with the N4148 diodes that the build called for and I made no changes in the directions. There are quite a few components involved in this build and I am going to have it up on the PedalPCB auditorium platform tomorrow and then get it boxed up probably Monday because of the Superbowl tomorrow.

Right now I am deciding of my graphics choice here is too risqué. I see most people use the pool reference for their graphics.

It will be all gold, the footswitch, Stompbox powder coated enclosure, LED bezel, output jacks, and knobs. I am including images of my board and soldering..

 

[Robert]

FYI: I used an adaptor and did not consider the girth of a 100u cap. It was a tight fit and something to consider.

If you run into that issue again you can mount them vertically using right angle pins (or rigid solid core wire).

 

[JimL]

Well, I got it up on the platform didn’t work. Checked all the resistors and caps redid all of the solder. No time for further testing today because of that Super Bowl I got a party to go to. I did have trouble with one cap the 100 and in the upper right. So I gave that a little more attention. I had initially put the wrong cap there and had to really jag around to open up the hole so hopefully I didn’t damage the board too bad maybe that’s why it doesn’t work. I’ll certainly be back to this tomorrow.

 

[Robert]

Let's start with the easiest stuff first...

Did the LED light up?

Where did you get those MC33178 opamps?


Now I want to mount a battery on my Auditoriums.....

 

[owlexifry]

for what it's worth, you can actually just sub the JFET for a 2N5089 (or probably a 2N5088) and it doesn't sound any different. (per breadboard investigations).
it's just an input buffer.

Where did you get those MC33178 opamps?

good call.
maybe drop in something guaranteed genuine like a 4558 or whatever and see if it works (opamp choice isn't really critical to the sound)

 

[JimL]

Looks like I got them

Let's start with the easiest stuff first...

Did the LED light up?

Where did you get those MC33178 opamps?


Now I want to mount a battery on my Auditoriums.....

yes, the light works. And you get a little bit of an extremely muffled sound. Iyes, the light works. And you get a little bit of a extremely muffled sound. I haven’t tested it since I redid all the solder and I just checked where I got those chips from Amazon. I got some legit ones I bought from pedal PCB but I decided to try these Amazon ones because they were less work. What other chip you think I could stick in there?