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#26 2014-11-19 00:32:48

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Snaaaaake!

Yeah I like the idea of playing snake through the display.  Right now my focus is on managing the whole thing without needing to plug in a mouse to each and every machine.  After that, the DE9 to minidin8 to expand the wall (hopefully it can be almost doubled in size, power permitting)!

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#27 2014-11-19 01:28:39

jt
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From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Why don't you KM switch your Vs? DE-9 switchboxen are cheap as dirt if you only need a mouse and you can cascade as many as needed. DB-25 works for both at the same time if needed. Breadboarding your own KM switch array would be even less expensive and much smaller.

Is there any electrical reason mechanical switches won't work out?

Great space heater for the winter, you might want to look into ventilation, the farther you go up the ladder, the more likely you are to melt the louvers above the transformer on the A/B. Overheating such as that is still in evidence on the remaining side of my Visible Plus bucket.

Last edited by jt (2014-11-19 01:39:01)

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#28 2014-11-19 02:42:22

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Snaaaaake!

Yeah, a set of old mechanical DB9 switch boxes off ebay or something would probably work fine.  That's a lot of cabling though.  And it's all about the science project!
I've got the INIT working to control the mouse with opt-a/w/d/s/space with the keyboard, and with a DDP appletalk packet.
I can now script the mouse pointer movement from a linux box:

# moves the mouse cursor to x = 0x0030, y = 0x0040 for machines listening on socket 101
./ddp -s 101 --hex 010000300040
# sends mouseDown
./ddp -s 101 --hex 02
# sends mouseUp
./ddp -s 101 --hex 03

So, lots of ways to move the mouse now.  Unfortunately the menubar is special and doesn't listen to mouse events.  It directly looks at mouse state.  So my pseudo-mouse clicks on the menubar aren't recognized.  Oh well, it's enough to launch apps with Finder.

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#29 2014-11-19 04:08:41

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Snaaaaake!

photo-main.jpg


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#30 2014-11-19 17:06:20

jt
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From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

bbraun wrote:

Yeah, a set of old mechanical DB9 switch boxes off ebay or something would probably work fine.  That's a lot of cabling though.  And it's all about the science project!

You can set up a 4x4 array by stripping ribbon cable, IDC connector termination that don't protrude much at all and 5 of the 4-way printer port variety. flip flop the stripping and you save a lot of cable scrappage, wanna go for 16x16? tongue

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#31 2014-11-19 17:06:50

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

bbraun wrote:

Yeah, a set of old mechanical DB9 switch boxes off ebay or something would probably work fine.  That's a lot of cabling though.  And it's all about the science project!

You can set up a 4x4 array by stripping ribbon cable and IDC connector termination won't protrude hardly at all. Just five of the 4-way printer port variety does the trick that way. Flip flop the stepped cable stripping to cut down on cable scrappage.

Wanna go for KBD integration or 16x16? tongue



edit: just had another thought: strip off the boxes and mount the rotary switches and backplane connectors to a clear plexi box on your desk  .  .  .


--O------------o___o___o___o

--O------------o___o___o___o
----------O
--O------------o___o___o___o

--O------------o___o___o___o

.  .  .  with LED unit indication and illumination of all the pretty wiring inside.  cool


.

Last edited by jt (2014-11-19 17:25:43)

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#32 2014-11-19 22:06:33

techknight
Member
Registered: 2014-05-22
Posts: 453

Re: Snaaaaake!

With enough of these you could build a replica wheel of fortune board. Haha

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#33 2014-11-20 01:19:37

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Vanna, hell no! tongue

Jeopardy_game_board.png

<  .  .  .  bolts for work, no time to convert pic to dithered-grayscale  hmm   >

Last edited by jt (2014-11-20 01:23:32)

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#34 2014-11-24 00:31:14

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Snaaaaake!

Alright, up to 12 in a 4x3 configuration.  It's getting significantly harder to deal with, the more machines there are.  First, no phonenet adapters, so I made DE9 to minidin8 adapters to be able to use the newer minidin8 phonenet adapters on the 512ke machines.  Then ran out of telephone cable to connect all the phonenet adapters.  Then getting the machines working.  A couple had bad solder joints on the analog board, most had unreliable floppy drives.  The cable management gets a bit out of hand, and increasingly difficult to reach the inner machines as the wall grows.  Fixed the floppy drives, and then with all the machines connected, localtalk was very unreliable.  I figured it had to be my DE9 to minidin8 adapters, so checked those out.  Those were fine.  Then figured there had to be a break in the phonenet somewhere.  Nope, that was fine.  Turns out, the Farallon localtalk to ethertalk print adapter I was using really didn't like all those machines on the localtalk side.  After abandoning the print adapter and isolating the localtalk network, things were working smoothly again.
My INIT to allow keyboard control of the mouse worked great, allowing much easier control of things than reaching behind the machines.

So, here's 4x3 playing Snake.  I don't think I'll shoot for 5x3.  It's getting a bit out of hand.

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#35 2014-11-24 01:46:22

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Snaaaaake!

Someone asked how much power this setup uses.  So I plugged it all in to a kill-a-watt, and it's about 390W idle, 428W when everything is accessing their floppies simultaneously.  Which is about what my 2008 macpro draws.

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#36 2014-11-24 03:04:36

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Gotta love it! Mouse control from the KBD sounds great.

How happy are the lower units with their cooling vents covered? Do you have them separated a bit a/o have supports running across the back to allow some airflow while keeping them level?

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#37 2014-11-24 04:26:26

bbraun
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Registered: 2014-05-29
Posts: 1,064
Website

Re: Snaaaaake!

Yeah, I have about a 3/4" x 3x4" piece of wood under the back of the machines to keep them level-ish.  I guess it also lets some heat escape.  I'm not overly worried about heat, since we're talking like 35W TDP in such a large space and I'm not really leaving the machines on 24/7.
I might finally have a use for my FastPath, since it should be able to handle the number of machines a little better than a puny print adapter.

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#38 2014-11-24 17:45:16

bbraun
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Registered: 2014-05-29
Posts: 1,064
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Re: Snaaaaake!

Ok, really and for true the end of the line at 5x3.  There's enough machines for another 2 or 3 columns, but it's getting a bit out of hand:
snake5x3.jpg

Actually...  if there's that many machines left, maybe 2 walls that play against each other...  Nah.  I better stop now.

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#39 2014-11-24 18:41:26

uniserver
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From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Snaaaaake!

sick smile
is all that on one breaker ?  lol


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#40 2014-11-24 20:54:40

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Nah! Keep going!

Divide each screen into six dithered grayscale pixels in a sparse array to play the beginning of Chariots of Fire on it. It's a slow motion sequence, so you might be able to pull it off within AppleTalk bandwidth limitations at whatever aspect ratio they shot the original.

Can you feed the far left six and the far right six Macs tones to play for the stereo soundtrack across the network connection?

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#41 2014-11-24 21:49:08

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Snaaaaake!

Who else do you know that could wire up 15 vintage macs, networked and make them play Snake?


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#42 2014-11-24 21:54:05

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Dick at Tekserve, nobody else is is even close to being that far out there. wink

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#43 2014-11-25 00:30:54

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Snaaaaake!

ah,  oh were you talking about this ?
Tekserve-New-York.jpeg


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#44 2014-11-25 01:00:41

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,470

Re: Snaaaaake!

Nah, that looks like David's attempt to keep Dick's wild side in check. big_smile

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