01.23.13 - Zero Point documentation

[garfo]

Oh thanks Brian, I've just realized that I have purchased he 7805 for my Sea Urchin because that's what comes on SU BOM.So, 78L05 for both of them.Great, thank you vey much

Should be 78L05 for everything. That's the regulator in a TO-92 package.

[murdog47]

Looking at the data sheets, if you already have 7805 laying around you will need to turn it 180 degrees. On the 7805 the leads are 1.Input 2.Ground 3.Output. The 78L05 is 1.Output 2.Ground 3.Input

Like Brian said the 78L05 comes in the TO-92 package. That's what I'd use just for size purposes.

[madbean]

Yeah, my bad. I think the Eagle part was labeled that way and I forget to change it to 78L05 sometimes. I need to fix that in Eagle!

[jalmonsalmon]

 I just got my board in for the SDX and this will be the biggest build I have ever tackled.

I want to just thank Brian for his hard work here: BRAVO!
Speed of delivery was amazing! Just a few days delivery to Texas 

Now for compenents, I want amoung the best you can find and what I plan on ordering are xicon metal film resistors and Kemet 5mm metal film box caps plus the tantalums that are needed. For the Elecro's I am not sure between some Vishay's, Lelon's or Nichicon's but if some of you pro's out there can recommend optimal brands of passives for the cleanest build... would be great!
( I am measuring the lead spacings for sure so I don't get the wrong size passives ! )
As stated a 1590BB can be a tight fit but doable!

[jimilee]

Just keep looking til you find the most expensive, im pretty sure they'd be the best!

[neiloler]

I'm going to build mine with the cheapest components, that way when it sounds amazing the credit goes to Mad Bean and my fingers.

[jalmonsalmon]

Just keep looking til you find the most expensive, im pretty sure they'd be the best!

LOL I am not getting the most expensive, just quality - I am of the   Garbage in Garbage out mindset


Buying the most expensive stuff for an SDX would add up fast. no thanks

and I know your only teasing jimilee   

[jimilee]

I'm gonna have to build one if these too, I got about 5 in front of it though

[aballen]

Just got my board in the mail.  Is there a demo video on this one?

[madbean]

There will be very soon (within the next few days). For all three of the Zero Points.

[Stomptown]

I just got my board in for the SDX and this will be the biggest build I have ever tackled.

I want to just thank Brian for his hard work here: BRAVO!
Speed of delivery was amazing! Just a few days delivery to Texas  

Now for compenents, I want amoung the best you can find and what I plan on ordering are xicon metal film resistors and Kemet 5mm metal film box caps plus the tantalums that are needed. For the Elecro's I am not sure between some Vishay's, Lelon's or Nichicon's but if some of you pro's out there can recommend optimal brands of passives for the cleanest build... would be great!
( I am measuring the lead spacings for sure so I don't get the wrong size passives ! )
As stated a 1590BB can be a tight fit but doable!

I prefer mini caps from Mouser that Brian suggests for 1590A builds. Lelon is a reputable brand and they look cool! Brian posted some links to these in his baby board build document on the projects page. I am currently trying out some cheaper mini's that Jon P (Midwayfair) suggests here:

http://www.madbeanpedals.com/forum/index.php?topic=6634.0

They are made by panisonic and you can also get them at mouser. I think the minis just look cooler than the taller ones and if you buy in bulk you can build anything from 1590A up...

[garfo]

Ei Brian, you have written on the sdx document this sentence:"Omit R45 (1M). This will increase delay time and is not needed".I didn't quite understand what is not needed;did you miss some information by any chance?It crossed my mind that doing that mod would make change the pot to 100k not necessary to extend delay time.

[madbean]

The resistor is not needed. You can certainly increase delay time by using a larger pot like 100k. How much of it will be useable delay depends on how much noise you can tolerate.

[madbean]

And just to clarify, it is not needed because it essentially duplicates the function of the resistor in parallel with the delay pot (which is optional anyway).

[neiloler]

Populating both, say perhaps because it was late, you were watching Psych, and on autopilot (...) won't result in anything too crazy, at least that I can see...right?