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Mitsuru Yamada

Electronic engineering research engineer, I like making computers in the 1970s and astronomical observation

Saitama Pref, JAPAN
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78 Followers
14 Following
15 Projects
546 Likes
mitsuru-yamada
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This user joined on 11/14/2020.

12.3k
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The PERSEUS-8 is the enhanced version of the minimum configuration type the PERSEUS-7 6502 computer
Project Owner Contributor

PERSEUS-8 homemade 6502 computer

Mitsuru YamadaMitsuru Yamada

7k
49
14
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An RS232C serial terminal using MC6802 & LED dot matrix display modules
Project Owner Contributor

6802 Serial Terminal

Mitsuru YamadaMitsuru Yamada

15.3k
56
10
72
PERSEUS-9 is a die-cast aluminum housing mobile computer having dual 6502 CPU, 48 keys and 40 x 7 LED character display.
Project Owner Contributor

PERSEUS-9 homemade mobile 6502 computer

Mitsuru YamadaMitsuru Yamada

8.1k
53
11
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A minimal 6502 computer that can be programed machine language without PCs
Project Owner Contributor

6502 standalone computer

Mitsuru YamadaMitsuru Yamada

11.5k
45
28
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Homemade simple operational amplifier module and an audio amplifier using it
Project Owner Contributor

Homemade Operational Amplifier

Mitsuru YamadaMitsuru Yamada

4.9k
20
11
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A 6802 homebrew computer named PERSEUS-3 that was the basis of my PERSEUS series computers
Project Owner Contributor

PERSEUS-3 6802 homebrew computer

Mitsuru YamadaMitsuru Yamada

View all 15 projects

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Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)
Project Owner Contributor

Hackaday TTLers

Yann Guidon / YGDESYann Guidon / YGDES

26.4k
229
14
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Make Beautiful Big Labels Practically for Free
Project Owner Contributor

Masking Tape Plotter

michimartinimichimartini

17k
48
6
42
Super easy way to make a microscope with a DVD pickup with Analog Discovery
Project Owner Contributor

DVD pickup LASER microscope

kuriuzukuriuzu

4.5k
36
4
33
Recreation of a Sinclair ZX81 (dual rom 80/81) based on Grant Searle's project.
Project Owner Contributor

ZX80/81 Homebrew Clone

Augusto BaffaAugusto Baffa

3.6k
55
4
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MRC6502 is a fantastic opportunity to learn more about digital electronics and 6502 assembly programming... step by step.
Project Owner Contributor

MRC6502 - Modular Retro Computer

padnestpadnest

3.2k
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A journey to explore and better understand the Multitech Microprofessor machines in my retro computer collection
Project Owner Contributor

Exploring the Microprofessor

Michael WesselMichael Wessel

3.1k
30
7
31
Can it save audio? It can save data too!
Project Owner Contributor

Simple Universal Modem

Anders NielsenAnders Nielsen

2.8k
30
13
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A computer engineering journey through the Motorola 68k CPU family
Project Owner Contributor

Mackerel 68k Computer

Colin MaykishColin Maykish

2.5k
9
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The ever-watchful eye of my Home Assistant-controlled house
Project Owner Contributor

HAL 9000

Ben BrooksBen Brooks

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An open-source minimalist 68030 based VMEbus computer
Project Owner Contributor

hexahedron

Jason WesterveltJason Westervelt

2.2k
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The Baffa-1 is an 8-bit CPU created from scratch using 74 series logic gates and built using custom printed circuit boards.
Project Owner Contributor

Baffa-1 Homebrew CPU Minicomputer

Augusto BaffaAugusto Baffa

1.4k
24
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My not so fancy example of Magnetic Core Memory using fairly cheap cores and free parts from my junk box.
Project Owner Contributor

Magnetic Core Memory The Dr Cockroach Way

Dr. CockroachDr. Cockroach

1.2k
17
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Handheld RPI4 based computer with 36-key tactile keyboard and display
Project Owner Contributor

HandiPi

RichardRichard

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Students learn to melt solder, layout PC boards, use tools, and troubleshoot by building an analog, discrete component receiver.
Project Owner Contributor

High Schoolers Build a Radio Receiver

bill.mearabill.meara

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Library for Noritake Itron GU3000 series (GU3100 and GU3900) VFD module parallel interface graphic DMA mode for Raspberry Pi
Project Owner Contributor

Graphics Library for Noritake Itron Dot Matrix VFD

Ryo MukaiRyo Mukai

724
7
8
11
Recombobulating a 1970s vintage digital electronic calculator from Eastern Germany
Project Owner Contributor

Soemtron ETR220 Restoration Project

Keri SzafirKeri Szafir

666
9
0
13
Sleep trainer for kids
Project Owner Contributor

Lighthouse

strange.randstrange.rand

562
6
0
10
When a Jack of all Trades Jacks In.
Project Owner Contributor

Jack of all Trades Cyberdeck

someghostdudesomeghostdude

309
5
7
8
Intel 4004 single board computer running calculator program, VTL interpreter, 8080 emulator, and so on
Project Owner Contributor

Intel 4004 Homebrew Computer

Ryo MukaiRyo Mukai

View all

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michimartini wrote 05/12/2022 at 21:22 • point

Wow, you make extremely beautiful machines. Thanks for following my humble masking tape plotter project. 

  Are you sure? yes | no

Mitsuru Yamada wrote 05/13/2022 at 00:49 • point

Thanks for looking at my project too. I also like simple mechanisms. I have not written an article, but I have tried to make my own drive controller for an astronomical telescope by driving a stepper motor in microstepping, but it did not good work due to microvibrations.

  Are you sure? yes | no

Michael Wessel wrote 02/11/2022 at 05:29 • point

Thank you for liking my project "The Talking Microtronic Computer System Emulator"!

https://hackaday.io/project/11560-the-talking-microtronic-computer-system-emulator

  Are you sure? yes | no

Mitsuru Yamada wrote 02/11/2022 at 15:04 • point

You're welcome. I looked up the original computer training kit 'Microtronic' on a German website. In my case, the first training kit I used was Hitachi, H68/TR.

  Are you sure? yes | no

padnest wrote 01/24/2022 at 05:59 • point

Thank you for liking my project #MRC6502 - Modular Retro Computer 

  Are you sure? yes | no

Mitsuru Yamada wrote 01/24/2022 at 09:27 • point

You're welcome. I'm also enjoying assembler programs on the 6502！

  Are you sure? yes | no

padnest wrote 01/24/2022 at 11:01 • point

Wonderful!!! I would like to get any advice or suggestions from you about my project! I'm an hobbist who loves digital electronics and I have a lot to learn! Thank you also for following!

  Are you sure? yes | no

j wrote 11/19/2021 at 10:05 • point

Those are beautiful projects ! Nice to see the 74141 in your Nixie Clock.

  Are you sure? yes | no

Mitsuru Yamada wrote 11/19/2021 at 14:32 • point

Thanks! SN74141 is still available, which was a big help. By the way, I used SN74142 (counter + driver) for following frequency counter in 1975.

https://www.youtube.com/watch?v=dDuc7a1YSXI

  Are you sure? yes | no

j wrote 11/19/2021 at 14:55 • point

Very nice. I inherited a bunch of 74141 produced around 1975 by Siemens and they work like a charm.

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Giovanni wrote 02/17/2021 at 23:58 • point

Thanks for commenting, very cool projects!

  Are you sure? yes | no

Ken Yap wrote 01/16/2021 at 08:11 • point

Thanks for liking #TTL binary clock !

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