github.com/mahjongg2.ZX81plus38
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Author SHA1 Message Date
mahjongg2
5310bf9b1e Update README.md 2022-10-26 18:21:21 +02:00
mahjongg2
5d7a3452b1 Update README.md 2022-10-06 17:37:33 +02:00
mahjongg2
cc175ee53d Add files via upload 
6 October, 2022 small corrections (74LS11 from mouser must also be a 74HC11, and the SRAM must be a 600mil wide and not a 300mil wide from mouser)
 2022-10-06 17:33:50 +02:00
mahjongg2
bc66fd4fd3 Delete ZX81plus38_BOM_revision 1.9.ods 2022-10-06 17:31:42 +02:00
mahjongg2
d945fe7a56 Update README.md 2022-09-15 17:26:25 +02:00
mahjongg2
1666b13070 Add files via upload 
version rev1.9 with corrections to cassette I/O
 2022-09-15 17:25:35 +02:00
mahjongg2
bfd71ab0d1 Delete KICAD files ZX81+38 rev1,9.zip 2022-09-15 17:24:28 +02:00
mahjongg2
39f38246d5 Add files via upload 
Corrections for CO2 and CO3 (TIP not RING connected) and for values of C7, C8 and R59
 2022-09-15 17:17:14 +02:00
mahjongg2
419c062db1 Delete ZX81plus38rev1,9 schematic.pdf 2022-09-15 17:15:05 +02:00
mahjongg2
b996cf87ee Add files via upload 
corrections for C7, C8 and R59
 2022-09-15 17:14:40 +02:00
mahjongg2
d7785def9c Delete ZX81plus38_BOM_revision 1.9.ods 2022-09-15 17:13:28 +02:00
mahjongg2
f2a550b6a2 Add files via upload 
Rev 1.9 but with corrected connections for CO2 and CO3 for connection to TIP of TRS connectors
 2022-09-15 17:13:14 +02:00
mahjongg2
d6239db2f7 Delete ZX81+38rev1,9 production files.zip 2022-09-15 17:11:22 +02:00
mahjongg2
05a40e6772 Add files via upload 
corrected values of C7, C8 and R59
 2022-09-15 17:11:02 +02:00
mahjongg2
2821df1cd2 Delete ZX81+38_rev_1.9 component_placement.png 2022-09-15 17:09:20 +02:00
mahjongg2
19c27b1be8 Update README.md 2022-09-15 17:08:18 +02:00
mahjongg2
debae01234 Update README.md 2022-09-10 17:05:23 +02:00
mahjongg2
30532d65e8 Update README.md 2022-09-10 16:48:27 +02:00
mahjongg2
70281e0a77 Add files via upload 
Updated the silk screen overlay, with some lettering below the buttons repaired, for example the lettering "10" was replaced with "0", also the lettering was made bolder.
This is thus revision 1,2
 2022-09-10 16:44:25 +02:00
mahjongg2
754fdedd8f Delete ZX81+38 rev 1.1 keyboard PCB production files.zip 2022-09-10 16:40:49 +02:00
mahjongg2
a9a8358975 Add files via upload 
using these files you can open KiCad and continue working on the keyboard PCB.
 2022-09-08 22:31:08 +02:00
mahjongg2
9a157d2c57 Update README.md 2022-09-08 22:28:23 +02:00
mahjongg2
6a085ac4f1 Add files via upload 
rectangular single sided PCB (copper traces and pads on top side.)
 2022-09-08 22:25:56 +02:00
mahjongg2
6052a1b599 Update README.md 2022-09-08 22:23:12 +02:00
mahjongg2
c4d5cc046b Update README.md 2022-09-08 22:22:44 +02:00
mahjongg2
e080f98489 Update README.md 2022-09-08 22:21:53 +02:00
mahjongg2
9b07e074d6 Add files via upload 
gerber and drill files for a single sided PCB, with copper pads and traces on top.
 2022-09-08 22:11:05 +02:00
mahjongg2
124f862c6b Add files via upload 
Keyboard PCB specifically for the ZX81+38.
This keyboard uses 6x6mm buttons and a keyboard overlay specifically designed for the ZX-81, with round holes for the button stems.
Its a single sided PCB with round corners designed to fit into the indentation of the keyboard in the ZX-81 enclosure.
buttons are soldered to the top side (with the copper traces), so that pressing the button does not damage the copper pads. after soldering the buttons the leads that stick though are cut off near the PCB so the bottom will be flat.
 2022-09-08 22:08:56 +02:00
mahjongg2
f3ef073f27 Update README.md 2022-08-23 18:14:16 +02:00
mahjongg2
e6ad797e61 Update README.md 2022-08-23 18:12:41 +02:00
mahjongg2
8fdc4bd518 Update README.md 2022-08-23 18:11:36 +02:00
mahjongg2
71374397f6 Add files via upload 2022-08-23 17:58:42 +02:00
mahjongg2
d4a0a123fd Delete ZX81plus38_BOM_revision 1.8 .ods 2022-08-23 17:57:19 +02:00
mahjongg2
096aaa2f9b Add files via upload 2022-08-23 17:56:28 +02:00
mahjongg2
4ad02bf9ba Delete ZX81plus38Rev1,8 Schematic.pdf 2022-08-23 17:55:46 +02:00
mahjongg2
d7c662ba41 Add files via upload 2022-08-23 17:54:54 +02:00
mahjongg2
a840962db2 Delete ZX81+38_rev_1.8component_placement.png 2022-08-23 17:53:54 +02:00
mahjongg2
2459d20ccf Add files via upload 2022-08-23 17:53:26 +02:00
mahjongg2
301e2022f9 Delete ZX81+38 rev1.8 production files.zip 2022-08-23 17:51:53 +02:00
mahjongg2
48d4d85674 Add files via upload 
revision 1.9 with repaired joystick interface
 2022-08-23 17:51:25 +02:00
mahjongg2
3d5198194d Delete KICAD files ZX81+38 rev 1.8.zip 2022-08-23 17:48:22 +02:00
mahjongg2
e792072c6e Update README.md 2022-08-13 02:54:11 +02:00
mahjongg2
39b69cf733 Update README.md 2022-08-12 16:52:42 +02:00
mahjongg2
2d5ff731dc Update README.md 2022-08-12 16:50:43 +02:00
mahjongg2
89b4fdcbae Update README.md 2022-08-12 15:28:29 +02:00
mahjongg2
21d5ddcafc Update README.md 2022-08-12 15:27:46 +02:00
mahjongg2
3a68bc020e Update README.md 2022-08-12 15:22:29 +02:00
mahjongg2
02e3691875 Update README.md 
keeping my promise of releasing the KiCad project files.
 2022-08-04 19:15:59 +02:00
mahjongg2
536ca44517 Add files via upload 
complete KiCad project files, with these you should be able to create your own ZX81+38 KiCad project (Not tried yet)
 2022-08-04 19:08:14 +02:00
mahjongg2
e87a4065e5 Update README.md 2022-07-26 16:11:13 +02:00