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Oct 3, 2021 β€’ 27 tweets β€’ 7 min read β€’ Read on X
here's something neat, and it was almost an Apple product! 🧡 Image
the lid opens and folds underneath, revealing the nice large screen, still with the protective film. should I remove it? Image
the color reminds me a bit of the PowerBook, but as you can see it is different. the design language is not that similar. a lot of '90s products had this look Image
it's running Magic Cap, a '90s mobile operating system! Image
ahh yes, we have to calibrate the resistive touchscreen. there's a stylus, you can't just use your finger Image
no flash memory storage, so everything has to be stored in battery-backed SRAM. Image
Magic Cap was basically skeuomorphism to the extreme. here is my desk. there's an inbox and outbox for email, a phone, contacts list, notepad, and so on. Image
if I tap hallway in the upper right corner, it lets me navigate to different rooms. interesting idea, but it gets tiresome very quickly. Image
oh yeah it makes sounds! basically every action makes a very '90s sound effect. cute.
and they have these animated "stamps" that you can put anywhere. reminds me of the stickers feature on Google Meet.
when I say anywhere, that's what I mean! you can decorate your desk with them. πŸ˜‚
I wanted to try out the web browser but I don't think this email still works. Image
anyway, this device was a bit of a technological dead end BUT it helped inspire the modern smart phone. I mean heck Andy Rubin, who founded Android, worked on Magic Cap. 🎩🐰
it has holders for two batteries. a main one and a backup, which is a CR123A. the switch in between locks the covers making it hard to remove both batteries at once, which would cause you to lose data. Image
there are two PCMCIA slots, presumably for memory cards. there's also a very strange RJ11 jack for connection to an analog telephone line. Image
check out this weird and ultra compact phone jack! ImageImage
magic bus? 🚌 Image
that is... huh, what an odd connector Image
it has a kickstand! Image
and three different lengths of screws. πŸ˜› Image
inside the back cover. Image
expensive OS-CON capacitors Image
after removing the card slots and the plastic cover, you can see what appears to be the CPU. I think those two cups on the right are ROMs. Image
chips. πŸ˜›
on the bottom are two RAM chips and some custom (?) chips. Image
took a bit of work but I got it back together again.
according to here, the CPU is a MIPS R3000. randoc.wordpress.com/2017/12/28/gen…

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More from @TubeTimeUS

Jun 13, 2023
here's a weird object! it's some kind of foot pedal with an IBM logo. is it for a sewing machine? electronic synthesizer? what do you think? 🧡 Image
it's got a cursed connector! what IS that? Image
amazingly enough, I found something with the mating connector on it! but what is it? Image
Read 24 tweets
Jan 11, 2023
hey so remember the world's cutest oscilloscope i picked up last year? i think it's time to fix the probe socket issue.
i printed a new panel insert that has two BNC sockets on it (the original probes would have had captive cables)
the tricky part is that this oscilloscope has a 333K ohm input impedance instead of 1M like umm every other scope on the planet. fortunately someone designed a little conversion circuit...
Read 11 tweets
Jan 5, 2023
in honor of Sim Wong Hoo, here's a quick historical review of the Sound Blaster! 🧡
but first we have to go back to their first sound card, the Creative Music System from 1987. (image credit: Bratgoul on Wikipedia)
this card has some special "CMS-301" chips. if you peel back the sticker, they have had their top marks removed. they're actually SAA1099 synthesizer chips made by Philips. Creative wrote music composition software for musicians on the PC.
Read 23 tweets
Dec 31, 2022
Tube Time: a 2022 retrospective 🧡
(and stuff you might have missed!) Image
starting things off in january, i found a tube of super old 555 timer chips! i also decapped one of them.
i also started fixing up an old HP 150 computer. it's not PC compatible but it runs MS-DOS--how odd!
Read 65 tweets
Dec 29, 2022
today's mini project: fixing this Radius Thunder IV GX daughtercard. it looks fine, but... 🧡 Image
one of the chips has some broken pins! Image
looks like two of the pins got mashed and broke right at the plastic package. Image
Read 11 tweets
Dec 8, 2022
on the bench of healing tonight: my coffee grinder which decided to bite the dust. Image
symptoms: i push the start button and the motor just bumps a little bit and stops.
how to take it apart? hmm, i bet there are screws under the rubber feet. Image
Read 23 tweets

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