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Messages - Guybrush

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1
I've just tested it and what Madbean/Brian said above is (of course) correct. The resistor can attach to any leg of the LED.

Every day is a school day.

Cheers Brian!

2
Thank you, greatly appreciated.

Just to be clear: The resistor can go on either leg of the LED?

I've always assumed that it needs to go inbetween the 9v supply and the positive leg to limit the current before it hits the LED.


3
Hi there

I am planning on building an 8 way TBP loop strip for my baord. I have done some Googling to look for a good wiring diagram but everyone I have found either does mopre than I need (tuner out etc) or is unclear in someway (at least to me). The one I found that seems to best fit the bill for my needs is this one:



The thing I am questioning is the LED wiring. It seems to show the LED taking 9vt from the DC jack with a pull down resistor attached between the negative leg of the LED and the 3pdt. That doesn't sound right to me. Surely the resistor should go between the DC jack and the positive leg of the LED?

Secondly is there a limit to how many LEDs can be powered off 9v? Will each one need to be connected directly to the DC jack in parrallel or can I string them together in series?

Thanks in advance

4
How Do I? Beginner's Paradise. / Re: Extra + and - pads on SAWSE board
« on: August 10, 2017, 05:00:20 AM »
If I look in the build doc, there is no +9V connection at the lower end of the PCB: it's ground, LED switch ground, LED+, LED-, in and out. Makes sense as the switch does not need 9V  8). The bottom ground pad is connected to the top ground pad (you can check with a DMM set for continuity). So, the top 9V+ goes to your testing rig, either of the grounds, and the in/out.

Ahh ok, thank you. I was even more confused than what I thought!

Thanks for setting me straight!

5
How Do I? Beginner's Paradise. / Extra + and - pads on SAWSE board
« on: August 10, 2017, 04:37:38 AM »
Hi all

It's been a long tome since I put a Madbean board together and have seeminly forgotten some of the basics.

The SAWSE board has the usual four 3pdt connection pads at the base of the circuit: In, Out, 9vt and Grnd

At the top of the board are extra pads for 9vt and Grnd.

My question is do I need to connect these two extra pads to my test rig when testing the board or do I just need to connect the four 'normal' pads?

Thanks in advance

6
Open Discussion / Re: Envelope controlled tremolo
« on: July 25, 2017, 12:11:31 PM »
That would be enormously appreciated!

7
Open Discussion / Re: Envelope controlled tremolo
« on: July 25, 2017, 07:16:58 AM »
I've heard this about the Expandora before but when I've looked at YouTube videos no one seems to mention the envelope 'feature'. Does it definitely drive more the harder you play?

8
Open Discussion / Re: Envelope controlled tremolo
« on: July 25, 2017, 04:52:22 AM »
If you listen, the harder he plays, the splattier and nastier it gets. I still think it'd be a cool effect with a nasty enough fuzz that responds well to saggage. One day...

Anything we can do to encourage you?

I've always fancied an OD that drives the harder you dig in, should be the same kind of idea I guess?

9
Open Discussion / Re: Envelope controlled tremolo
« on: July 24, 2017, 04:40:33 AM »
Thanks guys!

I'll check them out.

Appreciated.

10
Open Discussion / Envelope controlled tremolo
« on: July 21, 2017, 03:15:18 AM »
Hi all

Apologies if this has been asked before but I have a friend asking me about building him a tremolo in which the trmolo speed increases the harder you play. I guess it would be an envelope controlled kind of thing?

Is anyone aware of any DIY projects that offer this?

Thanks in advance

11
Open Discussion / Re: Boost pedal with mute
« on: June 27, 2017, 10:43:03 AM »
Thanks guys!

Appreciated

12
Open Discussion / Boost pedal with mute
« on: June 23, 2017, 04:38:48 AM »
Hi all

I'm looking at making a simple one knob boost pedal that has zero volume when the knob is fully rolled off.
Does anyone know if such a project exists?

Thanks in advance

13
Open Discussion / Re: Can anybody identify this circuit?
« on: June 06, 2017, 04:09:45 AM »
I finally finished it over the weekend. I obviously don't have anything to compare it against but I believe it is working as it should.

I am getting a distortion with a fuzzy edge. There's not a great deal of distortion even when cranked but what there is sounds good to my ears. The bias pot changes the nature of the distortion (more splatty and fuzzy in several settings) with several 'dead' spots but I guess this is to be expected with this kind of control.

The shape knobs affect the signal quite dramatically depending on the bias setting and there's plenty of useable and not so useable sounds to be had. I tried swicthing out R1, 18 and 19 as suggested but found the stock values sounded best.

I have only had chance to play it at low volume and looking forward to getting it turned up!

Does it sound like a BOSS unit? No, and that's the point!

Thanks all

14
Open Discussion / Re: Can anybody identify this circuit?
« on: May 31, 2017, 02:55:35 AM »
Thanks pal.

I've been a bit tied up this week but will get on it asap!

Cheers

15
Open Discussion / Re: Can anybody identify this circuit?
« on: May 26, 2017, 06:34:11 AM »

Thanks for this! I've been looking for a new distortion for ages. I put in the parts order yesterday and will get it built (as oper the Tagboard layout) asap.

Thanks again!

You're welcome, have fun!
Also, it does pay to experiment a little with the component values, especially the emitter resistors R18, R19 and the gain of the input amplifier U1a (lower R1 for higher gain).

Noted!

I'll do some socketing. Any suggestions for R18 and 19?

Edit - On the tagboard layout the components are lablled. WOuld you be able to point out which resisors I should socket?

Cheers

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