Part IV: Model 12 Card Cage Build, Install, And Power Harness @TJBChris
Part IV: Model 12 Card Cage Build, Install, And Power Harness  @TJBChris
Uploaded December 2023 | Updated September 2026, 3 weeks ago
It's finished! In Part IV of the card cage build for the TRS-80 Model 12, I compare two different prints of my card cage from CraftCloud and Shapeways, address electrical harness and grounding needs, and assemble and install the card cage. I then test it all out.

This video is *NOT* sponsored by any brand or provider in any way. I paid full price for the card cages for the purposes of this comparison and have not been in contact with any company in any way other than that of a paying customer.

TE Connector Part Numbers:
Male connector housing: 1-480271-0
Female connector housig: 1-480270-0
Female pins: 350550-1
Male pins: 1062-16-1422

Tools Part Numbers:
TE Crimper: 354940-1
Pinned Die Set: 90546-2

SFX (in order):
Scrabble Letter Placement

Music:
None. Just me jabbering.

Links:
The card cage project on GitHub: github.com/TJBChris/TRS-80Model12CardCage
CraftCloud: craftcloud3d.com
Shapeways: shapeways.com

Chapters:

Intro (0:00)
CraftCloud vs. Shapeways Cage Comparison (1:33)
PSA: Don't Use Floppy Drive Power Cables For Backplane (12:19)
Power Harness Splitter Overview (13:25)
Voltage Check (14:44)
Making The Power Harness (17:49)
Assembling the Cage (22:23)
Installing the Cage and Wiring Harness (29:04)
Grounding (34:43)
Testing It Out (37:36)
Outro (41:57)

I do these videos unscripted, so I apologize if the in-the-moment descriptions of things are a bit scattered. If you have any questions/comments about this video, you can find me in any of these fine locations:

The Tandy Discord Server
The CoCo Nation Discord Server
The TRS-80 Color Computer (CoCo) group on Facebook
The CoCo Crew Podcast group on Facebook
On the Vintage Computer Forums (vcfed.org)
The TRS-80 Models I-4/4P Group on Facebook
Tandy / Radio Shack Model II /12 / 16 / 16B / 6000 Owner's Group on Facebook
Twitter (I'm TJBChris there...)
The Level29 BBS (I'm TJBChris there, too.)
Particles BBS (Guess who I am here? Yeah, TJBChris.)

Thanks for watching!
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Part IV: Model 12 Card Cage Build, Install, And Power Harness

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