Recent posts

#1

Tech Help - Projects Page / Re: Ballast Junior

Last post by azrael - July 26, 2024, 06:33:49 PM

Interesting. Alternatively you can increase R25 to 100k. This will increase the charge up time on the anti lock circuit. So, at power up pin6 will see the 2k2 to ground then as the transistor switch is powered it will reduce to the total resistance to its minimum.

Okay, will take note. After changing back to 100 ohms, I was unable to make the lockup state occur again after multiple power disconnect/reconnects with discharge time in between. But I will probably do this if it occurs again, that sounds like an easy fix to make that boot up time happy.

I think that one PT2399 was definitely unhappy in the circuit, but maybe the TL062 also helped? In any case, my coworker seems happy as his first pedal works now!

#2

Global Annoucements / Re: July 2024 releases

Last post by jimilee - July 26, 2024, 12:48:27 AM

You guys are killing me. My daughter is going into her Sr year of high school. She's looking at colleges, I can't deal with the thought of her going off to college. How do you guys do it?


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I just want to reclaim my bathroom.

Bwahahahahaha


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#3

Global Annoucements / Re: July 2024 releases

Last post by madbean - July 26, 2024, 12:39:32 AM

You guys are killing me. My daughter is going into her Sr year of high school. She's looking at colleges, I can't deal with the thought of her going off to college. How do you guys do it?


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I just want to reclaim my bathroom.

#4

Tech Help - Projects Page / Re: Ballast Junior

Last post by madbean - July 26, 2024, 12:38:13 AM

An update, I put in another PT2399 and the high current draw state has been fixed. Current draw is 37 mA when it is working properly.
However there are still issues where the chorus effect does not happen. I'm going to revert R24 back to 100 ohms.

Interesting. Alternatively you can increase R25 to 100k. This will increase the charge up time on the anti lock circuit. So, at power up pin6 will see the 2k2 to ground then as the transistor switch is powered it will reduce to the total resistance to its minimum.

#5

Tech Help - Projects Page / Re: Ballast Junior

Last post by azrael - July 25, 2024, 10:12:39 PM

An update, I put in another PT2399 and the high current draw state has been fixed. Current draw is 37 mA when it is working properly.
However there are still issues where the chorus effect does not happen. I'm going to revert R24 back to 100 ohms.

#6

Build Reports / Re: Peacock Parallel Fuzz

Last post by gordo - July 25, 2024, 09:59:33 PM

Needless to say I'm in.

#7

Tech Help - Projects Page / Re: Ballast Junior

Last post by azrael - July 25, 2024, 08:48:58 PM

Something is sinking a whole lot of current but I'm not sure if it's your particular PT2399 or the anti-latch circuit. Using the TL072 for the other is fine - shouldn't have any effect.

Try removing the two TL072 and check the current draw again on power up and see if you get the same result. Check for any pins on the PT2399 having continuity with ground that shouldn't (on pins 3 and 4 should).

One other idea: try powering it up with IC3 removed to see if you have the same issue. Maybe let us know if the LFO is causing an issue.

Pic of the top of the board, too, please. And, report any other voltages that are out of line with the build doc.

to be clear, when I probe pin 2, the current draw drops back to 40-50mA, and I can get chorus tones out of it again. So that's why I think the current draw may be related to the lockup issue. Only pins 3 and 4 are connected ground, as we would expect.

This is something my coworker built, his first pedal, so I'm helping him debug it. I've attached a photo

#8

Build Reports / Re: Peacock Parallel Fuzz

Last post by Aleph Null - July 25, 2024, 08:48:40 PM

1. Yes
2. 1590BB (vertical)
3. I like the 30° look, but I'm a lazy SOB and prefer pcb-mounted pots
4. nope

Pots would be PCB mounted Whether at 30° or 90°. I'll provide a drill template for whatever layout we end up using.

#9

Build Reports / Re: Peacock Parallel Fuzz

Last post by jessenator - July 25, 2024, 07:24:59 PM

1. Yes
2. 1590BB (vertical)
3. I like the 30° look, but I'm a lazy SOB and prefer pcb-mounted pots
4. nope

#10

Global Annoucements / Re: July 2024 releases

Last post by jimilee - July 25, 2024, 05:23:10 PM

You guys are killing me. My daughter is going into her Sr year of high school. She's looking at colleges, I can't deal with the thought of her going off to college. How do you guys do it?


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