James Young
78d5224a1d
* remove HD44780_ENABLE rules: G-H * remove HD44780_ENABLE config: G-H |
3 years ago | |
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keymaps | [Keyboard] Magnavox Videowriter conversion with Pro Micro (#7634) | 4 years ago |
README.md | [Keyboard] Magnavox Videowriter conversion with Pro Micro (#7634) | 4 years ago |
config.h | Remove no-longer-necessary LTO checks from keyboards' config.h files (#8773) | 4 years ago |
info.json | [Keyboard] Magnavox Videowriter conversion with Pro Micro (#7634) | 4 years ago |
rules.mk | Remove HD44780 References, Part 3 (#10238) | 3 years ago |
videowriter.c | [Keyboard] Magnavox Videowriter conversion with Pro Micro (#7634) | 4 years ago |
videowriter.h | [Keyboard] Magnavox Videowriter conversion with Pro Micro (#7634) | 4 years ago |
Matrix layout is based on info from this article.
Magnavox Videowriter keyboard conversion project: direct connection of Pro Micro to the matrix.
Make example for this keyboard (after setting up your build environment):
make handwired/videowriter:default
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
Videowriter has 8x10 matrix:
col/row | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|---|
0 | 51 LShift | 39 Caps | ||||||
1 | 08 Copy | 07 Find | 06 Split | 05 Center | 04 Page | 03 Spell | 02 Print | 01 Menu |
2 | 16 5 | 15 4 | 14 3 | 13 2 | 12 1 | 11 Delete | 10 GoTo | 09 Move |
3 | 24 BkSpc | 23 Equals | 22 Minus | 21 0 | 20 9 | 19 8 | 18 7 | 17 6 |
4 | 32 U | 31 Y | 30 T | 29 R | 28 E | 27 W | 26 Q | 25 Tab |
5 | 41 S | 40 A | 38 Return | 37 ] | 36 [ | 35 P | 34 O | 33 I |
6 | 49 ; | 48 L | 47 K | 46 J | 45 H | 44 G | 43 F | 42 D |
7 | 58 M | 57 N | 56 B | 55 V | 54 C | 53 X | 52 Z | 50 " |
8 | 67 Left | 66 Up | 65 Insert | 64 Space | 63 Style | 61 / | 60 . | 59 , |
9 | 62 RShift | 72 Undo | 71 Help | 70 Do | 69 Right | 68 Down |
Initially left and right Shift keys are connected in parrallel. You need to cut the traces from right Shift (switch 62) and wire it to column 2 (switch 65, right pin) and row 9 (switch 71, bottom pin).
SN74LS145N IC (BCD-to-decimal decoder, drives matrix rows), NEC D8049HC IC (MCU, drives matrix columns) and resistor array need to be desoldered from the PCB. You need to shorten the 4 diodes (D2–D5) in the bottom right corner of the PCB (solder a wire between their pins). I've also removed two electrolytic capacitors and some ceramic capacitors just to free an additional space.
Optional: add diodes between each switch and corresponding row for NKRO. If you choose not to add them, create config.h
file in your personal keymap folder and add #define MATRIX_HAS_GHOST
to it.
Suggested mount position for the Pro Micro:
Compile and flash the firmware. Use matrix debug mode if something is wrong.