© 2024 EasyEDA Some rights reserved ISO/IEC
Editor Version
×
Standard
1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
Profession
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 5,000 devices or 10,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
Completed
STD TRS-80 Model III / 4 mini keyboard RTP 1.7
License: LGPL 3.0
Mode: Editors' pick
Cloned from TRS-80 Model III mini keyboard
- 0
Update time：
2024-01-09 07:53:42
Creation time：
2024-01-09 07:38:13
Description
I had a loose Model III mainboard laying around for years, and finally decided to build a working system with it.
So I needed a small cheap keyboard for it. Since these keyboards are pretty simple, I decided to design a PCB myself.
And here is the result. A small cheap keyboard for Model 3 or 4 computers.
PS: It should also work for Model 1 computers, but you would need to add the required 74LS05 and 74LS368 logic (you could maybe design a small extra board for that).
WARNING! I mistakingly used the footprint of 4.5mm tactile switches (not the more common 6mm tactile switches). So make sure you order the correct type (or update the schema and PCB with the correct footprint, which should be pretty easy).
Design Drawing
schematic diagram
（
1
/
）
PCB
（
1
/
）
The preview image was not generated, please save it again in the
editor.
| ID | Name | Designator | Footprint | Quantity | Manufacturer Part | Manufacturer | Supplier | Contributor | JLCPCB Part Class | spiceSymbolName | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | TS-1091-A2B2-D2 | 0,1,2,3,4,5,6,7,8,9,*,+,,,.,=,?,@,A,B,BREAK,C,CAPS,CLEAR,CTRL,D,DOWN,E,ENTER0,ENTER1,ENTER2,F,F1,F2,F3,G,H,I,J,K,L,LEFT,LSHIFT,M,N,O,P,Q,R,RESET,RIGHT,RSHIFT,S,SPACE0,SPACE1,SPACE2,SPACE3,SPACE4,SPACE5,SPACE6,T,U,UP,V,W,X,Y,Z | SW-TH_4P-L4.5-W4.5-P3.00-LS5.5 | 68 | TS-1091-A2B2-D2 | Yuandi(元迪) | LCSC | LCSC | C2972094 | https://lcsc.com/eda_search?q=C2972094&%26type=1&ref=editor | TS-1091-A2B2-D2 |
| 2 | XDZ254-2-10-Z-2.5-G1 | KEYB_CONN | HDR-TH_20P-P2.54-V-M-R2-C10-S2.54-5 | 1 | XDZ254-2-10-Z-2.5-G1 | XUNDA(讯答) | LCSC | lcsc | C18905889 | https://lcsc.com/eda_search?q=C18905889&%26type=1&ref=editor | XDZ254-2-10-Z-2.5-G1 |
Unfold
Project Members
0
0
Collect to album
Target complaint
Related Projects
Change a batch
Loading...
Add to album
×
Loading...
reminder
×
Do you need to add this project to the album?