Gaku
@gakusf.bsky.social
Retro computing (both software emulation and hardware). ThinkPad restorations. Rust / vim / IoT.
I've learned about side set feature of PIO assembly.
August 19, 2025 at 4:31 PM
I've learned about side set feature of PIO assembly.
Some more progress on designing for TP700C enclosure.
July 12, 2025 at 2:44 PM
Some more progress on designing for TP700C enclosure.
Thanks! Vee seems like the one - I'll check the voltage range of this. It could be on the mother board side, or could be on the panel.
May 27, 2025 at 8:18 PM
Thanks! Vee seems like the one - I'll check the voltage range of this. It could be on the mother board side, or could be on the panel.
From a lower angle, I can see it little better, but still hard to read. The polarizer looks okay, so something to do with the LCD circuitry?
May 27, 2025 at 5:47 AM
From a lower angle, I can see it little better, but still hard to read. The polarizer looks okay, so something to do with the LCD circuitry?
The issue is the liquid crystal side. I can barely see the characters.
May 27, 2025 at 5:46 AM
The issue is the liquid crystal side. I can barely see the characters.
Zeos Notebook 386 - The LCD panel's CFFL was fine. I can see the light.
May 27, 2025 at 5:45 AM
Zeos Notebook 386 - The LCD panel's CFFL was fine. I can see the light.
Yeah, the rubber belt is stiffen and not quite conveying the power to the gears below. How I can find a replacement....?
May 18, 2025 at 11:35 PM
Yeah, the rubber belt is stiffen and not quite conveying the power to the gears below. How I can find a replacement....?
Microsoft basic version 1.0 on EPSON PX-4 from 1985. #retrocomputing
May 18, 2025 at 10:33 PM
Microsoft basic version 1.0 on EPSON PX-4 from 1985. #retrocomputing
EPSON PX-4 still works! Make sure the AC adaptor's polarity. It's center-negative.
May 18, 2025 at 10:32 PM
EPSON PX-4 still works! Make sure the AC adaptor's polarity. It's center-negative.
It's always very difficult to identify which connector is used in an old board. I was closely looking at it, and realized that there was something. It turned out that it says "HRS". I believe this was Hirose's DF13A-15P-1.25H.
May 16, 2025 at 8:49 PM
It's always very difficult to identify which connector is used in an old board. I was closely looking at it, and realized that there was something. It turned out that it says "HRS". I believe this was Hirose's DF13A-15P-1.25H.
I was able to restore IBM ThinkPad 760CD! It has full 64MB RAM with a nice TFT 800x600 screen! #thinkpad #retrocomputing
May 14, 2025 at 4:48 AM
I was able to restore IBM ThinkPad 760CD! It has full 64MB RAM with a nice TFT 800x600 screen! #thinkpad #retrocomputing
making progress on a 3D model of a ThinkPad 700C panel.
May 13, 2025 at 5:38 PM
making progress on a 3D model of a ThinkPad 700C panel.
X68000 mother board has a shield cover. The white screws are for itself. The yellow screws are to tie it down to the chassis.
May 4, 2025 at 12:14 AM
X68000 mother board has a shield cover. The white screws are for itself. The yellow screws are to tie it down to the chassis.
Reassemble the X68000 ACE HD. Starting from the bottom board. #x68000 #retrocomputer
May 3, 2025 at 4:35 AM
Reassemble the X68000 ACE HD. Starting from the bottom board. #x68000 #retrocomputer
My X68000 is not booting up. However, the CPU seems to be successfully bootstrapping.
April 7, 2025 at 4:38 AM
My X68000 is not booting up. However, the CPU seems to be successfully bootstrapping.
The OTI054 chip used in a Zeos notebook was a part of Oak Horizon chipset.
March 19, 2025 at 4:51 AM
The OTI054 chip used in a Zeos notebook was a part of Oak Horizon chipset.
These 3-leg components are marked as TDK 222, FL045,etc. on the board. - EMI filters / feedthrough capacitors (2200pF?)
March 18, 2025 at 1:53 PM
These 3-leg components are marked as TDK 222, FL045,etc. on the board. - EMI filters / feedthrough capacitors (2200pF?)
Made a battery for ThinkPad 755C. It's a little bit thicker than the original.
March 15, 2025 at 5:41 PM
Made a battery for ThinkPad 755C. It's a little bit thicker than the original.
My Chinese digital microscope doesn't power on. It looks like this switch unit has the problem. There are 3 5V wires and they are getting power. Is the IC dead? The LED1 doesn't turn on.
March 15, 2025 at 3:15 AM
My Chinese digital microscope doesn't power on. It looks like this switch unit has the problem. There are 3 5V wires and they are getting power. Is the IC dead? The LED1 doesn't turn on.