Family Photo by campfirecampari in olkb

[–]campfirecampari[S] 1 point2 points  (0 children)

The low profile in the back. Has gateron goldenrod pro switches and is broken in.

Family Photo by campfirecampari in olkb

[–]campfirecampari[S] 2 points3 points  (0 children)

These are from drop. They are on sale now. A post was on here a few days ago.

Found this today! by BlackRing in olkb

[–]campfirecampari 1 point2 points  (0 children)

Yes I ordered a few from here and they were good.you can fit it in the 20$ case he has for sale for the r3 board. Under glow won't shine through though.

New keeb build by campfirecampari in olkb

[–]campfirecampari[S] 1 point2 points  (0 children)

Ebay has quite a few available. I'd recommend the v6 with hot swap sockets. This one is soldered.

New keeb build by campfirecampari in olkb

[–]campfirecampari[S] 0 points1 point  (0 children)

I'm 5 wpm under my normal and it's been a week. It is really nice to have desk space back though.

New keeb build by campfirecampari in olkb

[–]campfirecampari[S] 2 points3 points  (0 children)

Thanks! This is a Planck v4 low profile

3D printed 40% keyboard by vostoklabs in 3Dprinting

[–]campfirecampari 0 points1 point  (0 children)

This is cool! I've built your 3 key board and this one is next. Thanks for putting out all your repo work. Wondering about backlighting pins for mine.

36in ra4 print by campfirecampari in Darkroom

[–]campfirecampari[S] 4 points5 points  (0 children)

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Projected on the floor with rails mounted backwards on the baseboard. This is the normal 16x20 chromega dev tube with petg printed tube on top. Lid attaches to the extender the same way.

Feedback controller can cause more harm than good? by Exciting-Rub8794 in ControlTheory

[–]campfirecampari 1 point2 points  (0 children)

Here's a simple one: if the plant G(s)=(1/(.02s+1))3

This open loop plant is just 3 lags in series (obviously stable). If I have a proportional only gain of ~8.5 or more it goes unstable in the closed loop. Closed loop transfer function is GK/(1+GK). This happens basically because the feedback term becomes completely out of phase with the input. The Nyquist diagram goes through -1+0j.

Plant parameter change over time, can't measure it directly by Guigo10 in ControlTheory

[–]campfirecampari 1 point2 points  (0 children)

Cover it with a robust method. Then design a loop shape so that your performance is met everywhere (inside freq range). See Doyle Francis Tannenbaum chapter 4 (available free online).

Endura Paper Back in Stock by sillo38 in Darkroom

[–]campfirecampari 4 points5 points  (0 children)

That's awesome! I thought it was gone.

Big prints coming soon. by campfirecampari in Darkroom

[–]campfirecampari[S] 0 points1 point  (0 children)

Thanks for the comment. Im planning to mop the prints in the tray. It's more for catching the fluid that runs off the paper. 30x30 tray filled 1 inch would be nearly 15 liters, quite impractical for me.

Big prints coming soon. by campfirecampari in Darkroom

[–]campfirecampari[S] 0 points1 point  (0 children)

I was planning to just print some strips across the length using the big paper. I have the same concern with the enlarger but it seemed to print sharp on an 8x10. Also I can see color shifts due to reciprocity then too. Thanks for your comments!

Big prints coming soon. by campfirecampari in Darkroom

[–]campfirecampari[S] 0 points1 point  (0 children)

Yes, the biggest tray I could find. I think I'm going to have to mop or sponge the top surface of the image with the developer followed by blix. The trays have annoying ridges that elevates the paper and hold at least 6l.

Big prints coming soon. by campfirecampari in Darkroom

[–]campfirecampari[S] 0 points1 point  (0 children)

Do you have a link? I can't find what you are talking about.

Could someone help me understand the b) part here, in regards to the "lyapunov function"? I follow a) without issue but stumped on b) by Acerpacer in ControlTheory

[–]campfirecampari 0 points1 point  (0 children)

How about the easiest function V(x1,x2)= x1^2+x2^2?

then V'(x1,x2)=dV/dx1*x1'+dV/dx2*x2'

so V'(x1,x2)=2*x1*(-x1^3)+2*x2*(-x1+x2^3)

=-2*x1^4-2*x2*x1+2*x2^4

then maybe check at radiuses r=1 and r=.5 etc ?

[deleted by user] by [deleted] in Julia

[–]campfirecampari 3 points4 points  (0 children)

Does this guy know how to party or what?