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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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mitsuru-yamada

This user joined on 11/14/2020.

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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. 

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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.

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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

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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.

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

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

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

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

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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!

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j wrote 11/19/2021 at 10:05 point

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

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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

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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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initrd wrote 02/17/2021 at 23:58 point

Thanks for commenting, very cool projects!

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

Thanks for liking #TTL binary clock !

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