DIY Info Collection.



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Re: DIY Info Collection.

Postby moose23 » Tue Apr 19, 2011 4:43 pm

I usually have a bottle of IPA on my desk at all times.

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Re: DIY Info Collection.

Postby McSpunckle » Tue Apr 19, 2011 5:38 pm

Well played.
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Re: DIY Info Collection.

Postby jfrey » Fri May 06, 2011 11:42 am

moose23 wrote:I usually have a bottle of IPA on my desk at all times.

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I need to get some of their stuff. I have yet to try any. IPAs and Stouts are my favourites. Imperials are a plus.
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Re: DIY Info Collection.

Postby MEC » Mon May 09, 2011 10:51 pm

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http://youthministry.bandcamp.com/
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Re: DIY Info Collection.

Postby McSpunckle » Wed May 25, 2011 5:39 am

Just discovered that you can solder to the metal sides of Alpha stomp switches, and the "industrial" 3PDTs at Mammoth (Jason brand) and make a ground connection just like soldering to a pot. Great for LEDs, input grounds, etc. I'd be worried about heat, but it takes less heat than a pot by far.

Tried the same with a normal toggle switch and it didn't work... must be a different metal or plating or something. Pretty sure the stomps use tin.
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Re: DIY Info Collection.

Postby warwick.hoy » Fri Jun 03, 2011 6:34 pm

Talk to me about the interchangeability of parts, specifically resistors.

The Schem I'm going off of says it needs a 1.2M Ohm resistor. Finding that value is troublesome however,....I can find 1.0M resistors easily. How interchangeable are resistors. Would using the lower value make the circuit not function; at all? as intended?
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Re: DIY Info Collection.

Postby jfrey » Fri Jun 03, 2011 6:38 pm

warwick.hoy wrote:Talk to me about the interchangeability of parts, specifically resistors.

The Schem I'm going off of says it needs a 1.2M Ohm resistor. Finding that value is troublesome however,....I can find 1.0M resistors easily. How interchangeable are resistors. Would using the lower value make the circuit not function; at all? as intended?

Couldn't you just use a 1M and 200K resistor in series?
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Re: DIY Info Collection.

Postby warwick.hoy » Fri Jun 03, 2011 6:41 pm

:idk:

:erm:

:animal:
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Re: DIY Info Collection.

Postby McSpunckle » Fri Jun 03, 2011 6:47 pm

warwick.hoy wrote:Talk to me about the interchangeability of parts, specifically resistors.

The Schem I'm going off of says it needs a 1.2M Ohm resistor. Finding that value is troublesome however,....I can find 1.0M resistors easily. How interchangeable are resistors. Would using the lower value make the circuit not function; at all? as intended?


It depends on the circuit. In a fuzz or booster or something, you have a lot of wiggle room. In some circuits it could throw the whole thing off.

As Jfrey said, you can use a 1M in series with a 200K, or you could try 1M and see what happens.

Here's a 1.2M carbon film on Mouser:

http://www.mouser.com/ProductDetail/Xic ... Ds4Q%3d%3d
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Re: DIY Info Collection.

Postby warwick.hoy » Fri Jun 03, 2011 6:53 pm

Ah,...my difficulty came from trying to find metal film.
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Re: DIY Info Collection.

Postby McSpunckle » Fri Jun 03, 2011 6:58 pm

Yeah... I tried metal film first, but it seems once you get to 1M, the selection really drops off with those. Carbon films have all sorts of high values, apparently.

Resistors are weird.
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Re: DIY Info Collection.

Postby warwick.hoy » Fri Jun 03, 2011 7:12 pm

Is there any benefit to one over the other? Values aside.
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Re: DIY Info Collection.

Postby eatyourguitar » Fri Jun 03, 2011 11:58 pm

metal film are slightly less noisy
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Re: DIY Info Collection.

Postby McSpunckle » Sat Jun 04, 2011 9:29 am

^Basically that.

The more current, and the higher the value, the more noise a resistor will create. Metal film creates less noise. BUT! physically larger resistors will also create less noise. So 1/2 watt will make less noise than 1/4 watt.

Thing is, pedals are extremely low current anyways. So the difference is going to be very small if you even notice it.
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Re: DIY Info Collection.

Postby eatyourguitar » Sat Jun 04, 2011 10:09 am

McSpunckle wrote:^Basically that.

The more current, and the higher the value, the more noise a resistor will create. Metal film creates less noise. BUT! physically larger resistors will also create less noise. So 1/2 watt will make less noise than 1/4 watt.

Thing is, pedals are extremely low current anyways. So the difference is going to be very small if you even notice it.

you are correct that larger values cause more noise but I think you got it backwards for the 1/4 watt 1/2 watt thing. the 1/4 watt is less noisy than 1/2 watt.
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