About that BusBoard Prototype Systems SB4 board -- they're expensive. They're more than $6 each (Canadian) plus shipping from DigiKey. They're $10 each plus shipping from Mouser.

That's a lot for a hobbyist when you're experimenting, especially if you're making mistakes.

I looked around again recently, and couldn't find anything I liked at a reasonable price point.

So what does one do in this situation? Well, if you go Overkill 9000, you design your own prototyping perfboard and have a bunch manufactured for you! When you design your own, you can give it any features you like. So this one has:

18 x 36 (648 holes total)

It's two 18 x 18 sections, though I didn't have them scored for snapping.

A total of 6 horizontal busses in groups of 2, at the top and bottom plus one in the middle.

3 sets of 2 vertical busses within that space between horizontal bus sets, similarly edge - center - edge.

Then each row has a 6-hole pad on each side of the center 2 busses, which are spaced for IC or other standard 0.4" component layout.

Made of proper FR4 fiberglass. Good copper, good soldermask.

Silkscreened row and column IDs on both the front and back, at both the start and end of each row/column (and they match up with the back...).

And silkscreened boxes on the front showing the pad/buss pattern - no more flipping!

They arrived today and ... they're beautiful.

2/x

#NFP

Not for profit, but for the #GreaterGood

#Good = For All

In #Union We Stand

#Song by #Overkill from #Album #TakingOver

Divided We Fall

https://www.youtube.com/watch?v=OvBnBsGhikg

11/

Another nail in the coffin of the theory that climate, not humans, caused mass megafauna extinctions about 100,000 years ago. This debate has been going on under the term of "the Overkill hypothesis", with opponents claiming that the extinctions were due to climate changes, not due to humans coming in and killing large animals.

Here's the article: "People, not the climate, caused the decline of the giant mammals" https://nat.au.dk/en/about-the-faculty/news/show/artikel/people-not-the-climate-caused-the-decline-of-the-giant-mammals

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The new study presents brand new data that sheds new light on the debate. By looking at the DNA of 139 large living mammals – species that have survived for the past 50,000 years without becoming extinct – the researchers can show that the populations of these animals have also declined over the period. This development seems to be linked to the spread of humans and not climate change.
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and

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"We’ve studied the evolution of large mammalian populations over the past 750,000 years. For the first 700,000 years, the populations were fairly stable, but 50,000 years ago the curve broke and populations fell dramatically and never recovered,” he says, and continues: "For the past 800,000 years, the globe has fluctuated between ice ages and interglacial periods about every 100,000 years. If climate was the cause, we should see greater fluctuations when the climate changed prior to 50.000 years ago. But we don't. Humans are therefore the most likely explanation.”
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Paper: "Megafauna extinctions in the late-Quaternary are linked to human range expansion, not climate change" https://www.sciencedirect.com/science/article/pii/S221330542300036X

- Modern humans (Homo sapiens) drive late-Quaternary megafauna extinctions, with no role for climate change.
- The strong body-size bias of the late-Quaternary extinctions is also linked to modern humans, not climatic change.
- The late-Quaternary extinctions represent the first planet-wide, human-driven transformation of the environment.

In case anyone is looking for fundamental errors...

9/

Worldwide Late Pleistocene and Early Holocene population declines in extant megafauna are associated with Homo sapiens expansion rather than climate change https://www.nature.com/articles/s41467-023-43426-5

No quotes this time, read the article.

My own conclusion is:

Either humans are a short-lived mammalian species or hunting is not really part of human nature, because that unsustainable behavior means self-destruction, self-extinction. We do not get to live without a biosphere, that's for sci-fi spacefaring species, not us.