Author Topic: Prototyping an eggcrate control unit.  (Read 5920 times)

0 Members and 1 Guest are viewing this topic.

Offline ComeOnDown98

  • In the Audience
  • **
  • Posts: 25
  • Lavender lollipops!
Re: Prototyping an eggcrate control unit.
« Reply #30 on: March 15, 2021, 10:51:12 PM »
Hmm... y'know what, as tomcat mentioned, eggcrates are pretty much entirely discreet.

That would mean they'd be easy to replicate, right down to the aluminum foam mask if you searched for a good material.

The diode card can be programmed in EasyEDA or some other CAD program, and you can use 1N5401 diodes as the bits. Cathodes hook to the "word" lines, and anodes to the "bit" lines.

Use BA9s sockets and 1820 lamps for the pixels. The diode card's outputs hook to the ground of the corresponding sockets, and the common (all the remaining socket pins) hook to +28V through a tan wire.


Then, the following colors hook to each word:


0 - black
1 - brown
2 - red
3 - orange
4 - yellow
5 - green
6 - blue
7 - violet
8 - gray
9 - white
Symbol - pink

And use a 0.093" (2mm) 12-pin Molex connector for hookup.
« Last Edit: March 15, 2021, 11:00:53 PM by ComeOnDown98 »

Offline ComeOnDown98

  • In the Audience
  • **
  • Posts: 25
  • Lavender lollipops!
Re: Prototyping an eggcrate control unit.
« Reply #31 on: March 15, 2021, 11:13:31 PM »
A follow-up: the diode placement on the board. A 1 indicates a diode present, and a 0 indicates otherwise.

Code: [Select]
0 - 0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 0 1 1 0 1 0
1 - 0 0 1 0 1 1 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0
2 - 0 1 1 1 0 0 1 0 1 0 1 1 1 0 1 0 0 1 1 1 1
3 - 0 1 1 1 0 0 1 0 1 0 1 1 1 0 0 0 1 1 0 1 0
4 - 1 0 0 1 0 0 1 1 1 1 1 1 1 1 0 0 1 0 0 0 1
5 - 1 1 1 1 0 0 0 1 0 1 1 1 1 0 0 0 1 0 1 1 0
6 - 0 1 1 1 0 0 0 1 0 1 1 1 1 0 1 0 1 1 0 1 0
7 - 1 1 1 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0
8 - 0 1 1 1 0 0 1 1 1 0 1 1 1 0 1 0 1 1 0 1 0
9 - 0 1 1 1 0 0 1 1 1 0 1 1 1 1 0 0 1 0 0 1 0
$ - 0 1 1 1 0 1 1 1 0 0 1 1 1 0 0 1 1 1 0 1 0

The result: (# indicates a bulb lit, _ indicates unlit or not present)
Code: [Select]
0
_ # # # _
# _ _ _ #
# _ _ _ #
# _ _ _ #
# _ _ _ #
# _ _ _ #
_ # # # _

1
_ _ # _ _
_ # # _ _
_ _ # _ _
_ _ # _ _
_ _ # _ _
_ _ # _ _
_ # # #_

2
_ # # # _
# _ _ _ #
_ _ _ _ #
_ # # # _
# _ _ _ _
# _ _ _ _
# # # # #

3
_ # # # _
# _ _ _ #
_ _ _ _ #
_ # # # _
_ _ _ _ #
# _ _ _ #
_ # # # _

4
# _ _ _ #
# _ _ _ #
# _ _ _ #
# # # # #
_ _ _ _ #
_ _ _ _ #
_ _ _ _ #

5
# # # # #
# _ _ _ _
# _ _ _ _
# # # # _
_ _ _ _ #
_ _ _ _ #
# # # # _

6
_ # # # _
# _ _ _ _
# _ _ _ _
# # # # _
# _ _ _ #
# _ _ _ #
_ # # # _

7
# # # # #
_ _ _ _ #
_ _ _ _ #
_ _ _ # _
_ _ # _ _
_ _ # _ _
_ _ # _ _

8
_ # # # _
# _ _ _ #
# _ _ _ #
_ # # # _
# _ _ _ #
# _ _ _ #
_ # # # _

9
_ # # # _
# _ _ _ #
# _ _ _ #
_ # # # #
_ _ _ _ #
_ _ _ _ #
_ # # # _

$
_ # # # _
# _ # _ #
# _ # _ _
_ # # # _
_ _ # _ #
# _ # _ #
_ # # # _

And the pinout, as viewed from the back:
Code: [Select]
Horizontal
1 4 7 0
2 5 7 +
3 6 9 $

Vertical
3 2 1
6 5 4
9 8 7
$ + 0
« Last Edit: March 15, 2021, 11:22:44 PM by ComeOnDown98 »

Offline tomcat

  • Outside in Line
  • *
  • Posts: 9
Re: Prototyping an eggcrate control unit.
« Reply #32 on: March 16, 2021, 02:55:22 PM »
Hmm... y'know what, as tomcat mentioned, eggcrates are pretty much entirely discreet.

That would mean they'd be easy to replicate, right down to the aluminum foam mask if you searched for a good material.

The diode card can be programmed in EasyEDA or some other CAD program, and you can use 1N5401 diodes as the bits. Cathodes hook to the "word" lines, and anodes to the "bit" lines.

Use BA9s sockets and 1820 lamps for the pixels. The diode card's outputs hook to the ground of the corresponding sockets, and the common (all the remaining socket pins) hook to +28V through a tan wire.


Then, the following colors hook to each word:


0 - black
1 - brown
2 - red
3 - orange
4 - yellow
5 - green
6 - blue
7 - violet
8 - gray
9 - white
Symbol - pink

And use a 0.093" (2mm) 12-pin Molex connector for hookup.

That looks like an awesome plan for a project! I'm hoping more people take a look at designs for these and build them.

Brian

Offline ComeOnDown98

  • In the Audience
  • **
  • Posts: 25
  • Lavender lollipops!
Re: Prototyping an eggcrate control unit.
« Reply #33 on: March 16, 2021, 04:33:12 PM »
Yeah, Brian.

I even took the time to draw up a schematic for reference.

Wish I could share but I'm a bit of a n00b at sharing images from my hard drive...  :oldlol:

Offline ComeOnDown98

  • In the Audience
  • **
  • Posts: 25
  • Lavender lollipops!
Re: Prototyping an eggcrate control unit.
« Reply #34 on: March 23, 2021, 08:28:17 PM »
Okay, I got a Photobucket now. Here's the schematic:



Note how all the diodes are connected. Also note all the part numbers; the part numbers will be very important so as not to release any magic smoke!
« Last Edit: March 23, 2021, 08:30:41 PM by ComeOnDown98 »

Offline ComeOnDown98

  • In the Audience
  • **
  • Posts: 25
  • Lavender lollipops!
Re: Prototyping an eggcrate control unit.
« Reply #35 on: March 23, 2021, 10:38:51 PM »
Hmm... might start another thread since I have an idea and this one's dead anyway...

BRB...