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2022-09-15 17:15:05 +02:00
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corrections for C7, C8 and R59
2022-09-15 17:14:40 +02:00
mahjongg2
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2022-09-15 17:13:28 +02:00
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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
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2022-09-15 17:11:22 +02:00
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corrected values of C7, C8 and R59
2022-09-15 17:11:02 +02:00
mahjongg2
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2022-09-15 17:09:20 +02:00
mahjongg2
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2022-09-15 17:08:18 +02:00
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2022-09-10 17:05:23 +02:00
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2022-09-10 16:48:27 +02:00
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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
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2022-09-10 16:40:49 +02:00
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using these files you can open KiCad and continue working on the keyboard PCB.
2022-09-08 22:31:08 +02:00
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2022-09-08 22:28:23 +02:00
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rectangular single sided PCB (copper traces and pads on top side.)
2022-09-08 22:25:56 +02:00
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2022-09-08 22:23:12 +02:00
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2022-09-08 22:22:44 +02:00
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2022-09-08 22:21:53 +02:00
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gerber and drill files for a single sided PCB, with copper pads and traces on top.
2022-09-08 22:11:05 +02:00
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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
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2022-08-23 18:14:16 +02:00
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2022-08-23 18:12:41 +02:00
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2022-08-23 18:11:36 +02:00
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2022-08-23 17:58:42 +02:00
mahjongg2
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Delete ZX81plus38_BOM_revision 1.8 .ods
2022-08-23 17:57:19 +02:00
mahjongg2
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2022-08-23 17:56:28 +02:00
mahjongg2
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Delete ZX81plus38Rev1,8 Schematic.pdf
2022-08-23 17:55:46 +02:00
mahjongg2
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2022-08-23 17:54:54 +02:00
mahjongg2
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2022-08-23 17:53:54 +02:00
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2022-08-23 17:53:26 +02:00
mahjongg2
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Delete ZX81+38 rev1.8 production files.zip
2022-08-23 17:51:53 +02:00
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revision 1.9 with repaired joystick interface
2022-08-23 17:51:25 +02:00
mahjongg2
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2022-08-23 17:48:22 +02:00
mahjongg2
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2022-08-13 02:54:11 +02:00
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2022-08-12 16:52:42 +02:00
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2022-08-12 16:50:43 +02:00
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2022-08-12 15:28:29 +02:00
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2022-08-12 15:27:46 +02:00
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2022-08-12 15:22:29 +02:00
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keeping my promise of releasing the KiCad project files.
2022-08-04 19:15:59 +02:00
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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
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2022-07-26 16:11:13 +02:00
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2022-07-26 16:09:23 +02:00
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2022-07-26 16:03:32 +02:00
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2022-07-26 15:50:49 +02:00
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2022-07-26 15:49:07 +02:00
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Production files for revision 1.8 with all the latest corrections, copper fill isolation of JP1 and JP9 so JP1 can be scratched through now to switch to 8K rom-space. Modified transistor footprints for easier soldering, corrected non plated hole (drill holes) placement, corrected USB connector placement, corrected logic families (now only HC logic) , corrected crystal footprint now suitable for PTH and SMT crystals (use paper isolation for PTH crystals!) clock inverter using one half of U18 to solve the no white characters in black squares problem when using slow (EE)PROMS. corrected orientation of keyboard data lines (5-pins) header.
2022-07-26 15:45:54 +02:00
mahjongg2
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Delete ZX81+38 rev1.8 production files.zip
2022-07-26 15:33:04 +02:00
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ZX81+38 rev 1.8 gerber and drill files, with swapped keyboard data connector, clock inverter drill hole corrections and more.
2022-07-26 15:32:06 +02:00
mahjongg2
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Delete ZX81+38rev1,7.zip
2022-07-26 15:29:53 +02:00
