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Messages - madbean

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Build Reports / Re: FV-1 Build Arduino Eagle
« on: June 16, 2019, 09:15:42 AM »
Looks bad-ass! I'm going to dig through this project a bit. Thanks a lot for the share. You're a super-star :)

VFE Projects / Re: VFE Dragon
« on: June 12, 2019, 03:36:47 PM »
Are you sure you used the correct relay? The Dragon requires the non-latching version:

Open Discussion / Re: Your suggestions on overdrives for mbp
« on: June 05, 2019, 08:22:22 AM »
Well I wasn't expecting this strong of a response, haha. Good show!

Some really solid ideas in here - more tube stuff, amp ports, Grease Gun 2, old Maxon stuff, Sparkplug (that's already been completed but not released yet), and quite a few things I never thought of. Some suggestions might be a little out of my lane such as digital controlled analog overdrive, etc. Mostly I am looking for projects that will be fun, unique, and definitely not too time consuming to develop. And something high gain is well overdue as well.

Anyway, keep the suggestions coming. I think I'll make a spreadsheet of the suggestions and see how it could play out.

Open Discussion / Your suggestions on overdrives for mbp
« on: June 02, 2019, 08:04:18 AM »
The OD section of the Shop page is looking really pretty pathetic. I've spent a great deal of time working on modulation ideas over the last year and literally none on overdrive. What kind of OD projects would you like to see? I don't want to do clones of boutique stuff and there's already a lot of that out there anyway. Also, I'm not going to so anything that's already covered by the existing VFE projects since I still have lots of those boards.

More tube based projects, maybe? And different types of tubes? Or, something else? Something totally original (haha, yeah, whatever that would be)? Maybe combining OD with another type of effect...hmmm.

One project I do hope to add this summer is my (discrete) pedal version of the Vox Night Train, if I can finally get the damn thing to work right. Maybe a couple more amp to pedal conversions? I used to do one for the Carmen Ghia several years ago that was pretty neat.

Anyway, throw your ideas out if you have them.

Tech Help - Projects Page / Re: Pork Barrell 2019 Help!
« on: June 02, 2019, 07:56:17 AM »
Well, there's nothing alarming about your voltages. Your Vgg voltage is slightly higher than mine (0.73v vs. 0.6) but that is a completely normal range.

Obviously, the problem lies in the two outputs as you already know. You should have about 4.5v or so whereas you have less than a volt. You appear to have 56k on R20 as expected. And I assume you have twidled the Bias trimmer and no output no matter what.

First questions are always where did you source your MN3101 and MN3007. I think your 3101 is probably fine since it is putting out the right voltages. The MN3007 could be a problem (although by outward appearances it looks legit to me).

 The other thing I would do is pop out IC2 and use a continuity checker to make sure pins 7 and 8 do not have continuity with any other pins on that socket, nor ground (do this with no power applied to PCB). If you look at the trace diagram in the doc you can see where you should only have continuity with C13 and R20.

Lemme know what you find.

Tech Help - Projects Page / Re: Old build guides? Pork Barrel 2015
« on: June 01, 2019, 03:44:48 PM »
There is an archives link on the projects page.

Tech Help - Projects Page / Re: Pork Barrell 2019 Help!
« on: May 31, 2019, 10:46:22 AM »
Do you have the jumpers set correctly?
Have you audio probed the input and output of the MN3007 to check for signal?

General Questions / Re: Stage Fright Rate LED brightness
« on: May 31, 2019, 05:46:57 AM »
1 - The second resistor in parallel makes the LED go fully dark when it pulses (without it the LED only dims somewhat).
2 - You change both resistors. If you want less brightness, make both 10k.
3 - Only if the resistors are not high enough in value. At 4k7 or 10k, it's not an issue.

No doubt pins 3 and 4 of the MN3005 are the problem here. You have twice the expected voltage. My first thought was you did not use 100k for R20 and R21 but it appears you have.

Here are the possibilities (in no order):
micro bridge with solder
bad chip
bad socket (it can happen)
bad board or traces
wrong trimmer (should say 103 on it for 10k)

First thing I would do is pop out the MN3005. Remelt all the solder joints around there. Connect power (with chip still out) and measure the voltages on pins 3 and 4 of the empty socket. If you have a continuity checker, make sure that pins 3 and 4 do not have continuity with any of parts of the socket (without power applied).

Tech Help - Projects Page / Re: RustBucket 2019 not working
« on: May 24, 2019, 07:27:14 PM »
Possibly one of your ICs is not functioning correctly. I would pull all the ICs out of there sockets to start. Then recheck the output of the Murata to see if you get +/-15v. Then put in each IC one at a time and re-check to see if you still have +/- 15v.

I had this exact problem on my very first build of the Rustbucket and it was due to two bad ICs. One of them was a 3080 and I forget what the other one was.

There is some inherent grit in the Rustbucket but it's more prominent with the edge switch on (2nd half of the video).

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This is what it should sound like. If this is not the result you are getting there might be something off in your build - but I wouldn't go removing parts. Instead, I would leave R27 and the diodes in and experiment with higher values of R23 to see if it is more to your liking.

I'm mostly okay with where the story ended but wasn't thrilled about how they got there. I think a couple more episodes to flesh out the conclusion would have made all the difference. I kinda love where they went with Daeny but it just was too rushed IMO. There were lots of small moments taking her in that direction over the years but it needed a bit more to sell her transformation. And, since A Dream of Spring will probably never release this is the only conclusion we'll get :(

Still, it will be one of my all time favorite shows next to Breaking Bad, BSG and ST:TNG. I could probably just watch those 4 shows for the rest of my life and be satisfied, haha.

VFE Projects / Re: Drilling templates
« on: May 17, 2019, 06:46:33 PM »
It's in the switching doc.

Global Annoucements / Re: Info on next releases
« on: May 17, 2019, 08:20:11 AM »
Last update: All remaining Fritters claimed. In the end mbp gave out about 150+ so I expect to see lots of Hotcake builds, haha. A great success. We'll do another giveaway probably in July but I don't know yet what it will be.

I will have more info very soon on the remaining projects to be released (HB1.5, ManOWar and Polytrog). Lastly, all the boards currently out of stock have been re-ordered and should be here in about 10 days.

Open Discussion / Re: What are you playing? (games)
« on: May 14, 2019, 11:00:10 AM »
Finally found something I want to play.

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