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A Classic II/LC III laptop/book....

Forums > The Lab > Hardware > Homebrew & Frankenbuilds

retr01
Senior Tinkerer
Utah, USA
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Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #21
Attachments:
pb540c-wifi.jpg [View]

-SE40-
Tinkerer
The Netherlands
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Joined: Apr 30, 2022
Posts: 422
Likes: 168
Jun 21, 2022 - #22
It has time.....[smiling-face-with-ha]

Will try to fit it in.
Have to create a DXF from that kicad file somehow.

jajan547
Active Tinkerer
Houston, Texas, USA
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Joined: Mar 25, 2022
Posts: 738
Likes: 297
Jun 21, 2022 - #23
I think a RGB to HDMI would work to output to an LCD. The power supply should be quite simple though, and I assume something like a //C keyboard could be rigged up using ADB. I can work with you and we can create a 3d printed case too. Maybe even use say a rechargeable battery for power and a power supply to charge it.

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retr01
Senior Tinkerer
Utah, USA
--------
Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #24
Or once Pico can be made to work as a more straightforward and uncomplicated tool than the RGB2HDMI to output video, that would be cheaper.

As for the keyboard, I think not the //c. It should be better to type on, such as the first ADB keyboard for the SE. Custom keys are possible but costly. Make the case wider to fit the keys like on this 60% keyboard, and then add palm rests. That way, more stuff can be put in the case, such as Wifi and other things like video out wiring and adapter to the LCD screen.

Attachments:
1655795412934.png [View]

Liked by -SE40-

retr01
Senior Tinkerer
Utah, USA
--------
Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #25

It may be possible, but Classic II only has 24 address lines. Then, techknight points out that there is a 32-bit bus, so breaking the 10 MB barrier is possible by "stitching" with a patch to the System via a software approach. :unsure:

There could be a way to have code in the new ROM that will allow up to 32 MB of RAM using two 16 MB 30-pin SIMMs at 60 ns. [see-no-evil-monkey]:D

retr01
Senior Tinkerer
Utah, USA
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Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #26
The screen resolution could double from 512x384 to 1024x768 on a slightly bigger LCD such as a 10" size?

-SE40-
Tinkerer
The Netherlands
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Joined: Apr 30, 2022
Posts: 422
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Jun 21, 2022 - #27
Hi jajan547

RGB2HDMI would work for sure, and that is what I am aiming for.
Only the PiW seems hard to get the hands on... ive ordered one and they aim on delivery in December....

Now I am hoping that the (Picopi under development here)may do a similar job.
As I will be using this internal, a simple shield will do....

As for the keyboard, suggestions welcome!

[four-leaf-clover]

Liked by retr01

jajan547
Active Tinkerer
Houston, Texas, USA
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Joined: Mar 25, 2022
Posts: 738
Likes: 297
Jun 21, 2022 - #28
>> -SE40- said:
Hi jajan547 RGB2HDMI would work for sure, and that is what I am aiming for. Only the PiW seems hard to get the hands on... ive ordered one and they aim on delivery in December.... Now I am hoping that the (Picopi under development here)may do a similar job. As I will be using this internal, a simple shield will do.... As for the keyboard, suggestions welcome! Click to expand...
PM me I'd be happy to work on this with you.

Liked by -SE40-

-SE40-
Tinkerer
The Netherlands
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Joined: Apr 30, 2022
Posts: 422
Likes: 168
Jun 21, 2022 - #29
As for the display, indeed 1024x768 from a 9,7" ipad ( I have here availble from a almost dead ipad)
At Ebay/Ali small driverboards are selling for these.
Have to see whats needed/fits the picopi or RGB to HDMI best.

Thats about 10"[+1]

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Trash80toG4
Active Tinkerer
Bermuda Triangle, NC USA
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Joined: Apr 1, 2022
Posts: 1,131
Likes: 329
Jun 21, 2022 - #30
>> retr01 said:
WAY BETTER than the bloated Macintosh Portable! Click to expand...
If I might make a suggestion, flip the LCD over so it's a lid that hinges at the back edge. Hartmut never came up with that more ergonomically correct twist for this one that I've seen. ;)

Portable rocks, my concept,decade long project is based on one of frog's designs. The maniac did up in vHack form a year or two back?

jajan547
Active Tinkerer
Houston, Texas, USA
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Joined: Mar 25, 2022
Posts: 738
Likes: 297
Jun 21, 2022 - #31
>> Trash80toG4 said:
If I might make a suggestion, flip the LCD over so it's a lid that hinges at the back edge. Hartmut never came up with that more ergonomically correct twist for this one that I've seen. Portable rocks, my concept,decade long project is based on one of frog's designs. The maniac did up in vHack form a year or two back? Click to expand...
This is gonna be so neat to see

retr01
Senior Tinkerer
Utah, USA
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Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #32
Is it a laptop clam-style or a panel-style that can still see when flat like a tablet? [thinking]

Another twist, get a touch LCD and convert touch signals to ADB. Boom! It doubles as a tablet! System 7 has an on-screen keyboard, so why need a keyboard, anyway? Make it a tablet. A Mac SE/30 tablet with a Classic II board with FPU, bootable ROM, 32 MB RAM, WiFi, and SD storage with connectors to still be able to connect to external SCSI devices, an ADB keyboard and mouse, serial, and external floppy drive. [grimacing-face]

The power of the SE/30 is in your hands! [mindblown]

jajan547
Active Tinkerer
Houston, Texas, USA
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Joined: Mar 25, 2022
Posts: 738
Likes: 297
Jun 21, 2022 - #33
>> retr01 said:
Is it a laptop clam-style or a panel-style that can still see when flat like a tablet? Another twist, get a touch LCD and convert touch signals to ADB. Boom! It doubles as a tablet! System 7 has an on-screen keyboard, so why need a keyboard, anyway? Make it a tablet. A Mac SE/30 tablet with a Classic II board with FPU, bootable ROM, 32 MB RAM, WiFi, and SD storage with connectors to still be able to connect to external SCSI devices, an ADB keyboard and mouse, serial, and external floppy drive. The power of the SE/30 is in your hands! Click to expand...
That's crazy!

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retr01
Senior Tinkerer
Utah, USA
--------
Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #34
>> jajan547 said:
That's crazy! Click to expand...
Yup! [grinning-face-with-o] Imagine the possibilities! We have the technology to make a compact 68k Mac opportune with ideas from Hartmut. I just realized that based on this design model that @-SE40- wants to create, it could also be a tablet. It might not be thin like today's iPads, but it would be something that it never was back then.

retr01
Senior Tinkerer
Utah, USA
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Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #35
Then down the road, a color SE/30 tablet using the SE/30 logic board. <3

-SE40-
Tinkerer
The Netherlands
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Jun 21, 2022 - #36
The future is bright [four-leaf-clover]

-SE40-
Tinkerer
The Netherlands
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Joined: Apr 30, 2022
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Jun 21, 2022 - #37

@Trash80toG4 ...If I might make a suggestion, flip the LCD over so it's a lid that hinges at the back edge. Hartmut never came up with that more ergonomically correct twist for this one that I've seen. ;)


Point taken, and crossed my mind.
Its something he did not solve.
I will look into that.

Thanks!

-SE40-
Tinkerer
The Netherlands
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Joined: Apr 30, 2022
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Jun 21, 2022 - #38
@retr01 I like the keyboard.

Whats the size, where does it come from?
Cost?
Attachments:
398EDE3B-2D66-4B97-93D5-D994033D1901.png [View]

retr01
Senior Tinkerer
Utah, USA
--------
Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #39
LOL @-SE40-! It's the Apple Standard ADB keyboard. :ROFLMAO:


The point is, either you modify it and put it in there without a keyboard case OR go tablet approach. A custom keyboard can be costly. A touch screen is cheaper and can do a bigger touch screen with an adapter (such as a Pico or ) that will translate touch gestures to the ADB, such as the pointer's movement, scrolling, etc. An INIT and cDEV (Control Panel) may need to be programmed for Systems 6 and 7 unless entirely handled on the hardware side and passing on the correct ADB signals. B)(y)
Attachments:
Apple_Standard_Keyboard.jpg [View]

retr01
Senior Tinkerer
Utah, USA
--------
Joined: Jun 6, 2022
Posts: 2,474
Likes: 810
Jun 21, 2022 - #40
This is an example of translating from one input to another for ADB signals from modern keyboards and mice. Thus, it's possible to translate touch to ADB signals.

Attachments:
wombat-top-800-gray.png [View]

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