We using inches or millimeters around here? (Is there a PedalPCB standard for pot spacing?)

xefned

xefned

Well-known member
Hey friends,

I'm making a drill template for the Golden Falk.
My calipers are showing 1 inch height exactly between pots.
Is that correct, or should I be using mm? Or does it even matter? Close enough for rock and roll?
(I suppose the rounding error would be pretty small either way.) Just wanted to check with you more experienced folk before I send a drill template. Thanks.





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EDIT: On 2nd thought, the rounding error is so ridiculously small it makes no odds. Carry on pretending like I didn't ask this... Tayda's drill tool only uses mm anyway.
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When I’m pulling PedalPCB drill templates into Corel Draw to make Tayda drill templates, or if I’m designing enclosures and pot spacings for PCBs, I use millimeters.

Metric makes more sense to me.

When I was hardcore into brewing beer, I also used metric.
 
I use inches for the control layouts because that was the default setting in my PCB layout software when I started many years ago.

Metric would probably be a better choice since that's what the PCB fabricators and the Tayda drill tool use, but it's a little late to change now. :ROFLMAO:

Your measurements are correct. 1.3" horizontal and 1" vertical spacing (on center) between the pots.
 
Here's my Golden Falk drill template with a 3mm LED.
Move or resize the LED as desired.

UNCONFIRMED as of Feb. 9, 2022. But I will order one and confirm ASAP, (which could still take a while after drilling, painting, printing, and shipping.) Will update with a new thread when confirmed.

CONFIRMED. Drill template is perfect. Build thread forthcoming …
(Except for the LED, which is probably correct. I decided the placement clashed with my art so I moved it offboard.)
 
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I go by the 33mm spacing horizontally and 25mm vertically and it works even though it should probably be 25.4mm vertically. The holes I drill are just big enough that it always fits with a little persuasion. I haven't made anything with 12 knobs in vertically yet.
 
I’ll work with whatever, but brain appreciates the slightly reduced cognitive load of not doing arithmetic with rational numbers.
 
Metric rocks because that’s the number of fingers I currently have.

I have to say, the PPCB spacing standard is great. Apart from having to do research of my own, it works efficiently across 125B, 1590B/BB/LB!
 
I'm in the US and I really wish we'd all collectivly just rip the band aid off like big boys and girls and do a full switch to metric.

I think the construction industry is one of the big holdouts. There is just not a good metric equivalent of a foot. Decimeter just doesn't roll off the tongue like foot does...
 
Canada's been metric since '75, when all thermometers were converted to thermometres, though the process of metrication for the nation started rolling in 1970, and the GWN was fully metricificated by 1985.
Our P.M. John A MacDonald had foresight, I tell yah, as he laid the groundwork in 1871 by legalizing metric as a legalised system.

The construction industry was, as Aentons noted, a holdout against metrication, but it too has become metricu-related.
For example Canadian home-builders now use 5.08cmX10.16cm boards for wall-studs spaced 50.64cm apart.

Using metric just takes a bit of practice and before you know it you'll find saying:
"Hal, pass me that eight-foot two-by-four..."
to be extremely awkward compared to how easily the following rolls off the tongue:
"Hal, pass me that two-hundred-and-forty-three-point-eight-four and five-point-zero-eight-centimetre-by-ten-point-one-six-centimetre board..."

The reason Canada went metric was while being imperial-based, we were tired of extremely confusing exchanges with the U.S.A. —
for example in regards to barrels of oil, paying for Imperial-gallons (4.55 litres) and receiving US-gallons (3.79 litres);
or selling imperial-bushels (Avery, ie 36.369 litres), but paid for the US's Winchester-bushel (35.239 litres)...

So in a sense, ripping off the band-aid would almost make sense since the US-imperial system wasn't based on the rest of the world's imperial system anyways.
Understanding the now world-adopted system of measurement goes from difficult imperial Ee-Zee Pee-Zee to simple metric ea-zed-pea-zed:
for example:
29.99998515MPG is more easily understood as 7.84049 litres per 100km


BTW, the cost of Canada converting to metric by 1990 had cost Canuckian-average tax-payers (ie not the corporations, but little guys) in excess of one billion dollars.
Presumably that's CAD, so about USD 713,695,000.xx. So, if the US were to convert to metric now, it might cost you guys USD-BILLION. However, since you have a larger population-base to spread the cost across, joe-average little-guy won't be screwed as hard as us North American cousins above the 49th Parallel.


Don't get me started with the bar industry and pints...
 
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And the band METRIC... actually from Canada.




I wonder if the Scottish band BOARDS OF CANADA are using metric board feet or imperial board feet?

Then there's CANADA, an indie folk-pop band from Ann Arbor, Michigan.


There's another US-band with a Canadian name that I can't quite recall right now...
 
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