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Relays in the mail - and first 3 bytes of storage

A project log for Nonvolitile DRAM-like thing with Russian Relays

DRAM is fun and interesting. Whats even cooler is making it NON-VOLATILE!

dylan-brophyDylan Brophy 04/27/2017 at 02:464 Comments

I got my relays in the main yesterday!

I have been waiting a long time but they're here now so I'm happy.

I was feeling inspired by @Yann Guidon / YGDES's project #YGREC16 - YG's 16bits Relay Electric Computer and it's DRAM, so I got the same relays that his project uses. Since I'm in California these Russian relays feel much more exotic to me... And I like different languages than English/Spanish that I don't see so often, so the Russian, French, and English all on the same box seemed really cool to me.

Anyways, I decided to do some tests and make a bread boarded prototype. For this one I have a video.

After running further tests I discovered that the RAM worked well. So I decided to make all the RAM I could manage: 3 bytes using 24 capacitors and 3 relays (1 relay per byte).

A few tests of this board confirmed that it works. Beautiful!

I am working on some better ways to place the capacitors. I want to get to at least 512 bytes per 100 cm2. Oh, and that's enough for a bootable drive >:D. Could this one day be plugged into a PC and booted from? Just a thought....

Yea. Now I need to REALLY increase density. I'm already thinking SMD + OSH park.

Discussions

Yann Guidon / YGDES wrote 04/27/2017 at 10:55 point

Welcome to the club ! I'm happy you can play with the РЭС15 and use the data I collected so far :-)

  Are you sure? yes | no

Yann Guidon / YGDES wrote 04/27/2017 at 11:29 point

PS: you only bought 36 relays, this time. Beware, you're going to buy more very soon :-D

  Are you sure? yes | no

Dylan Brophy wrote 04/27/2017 at 17:05 point

Yes, I wouldn't be surprised.  At 1 relay per data word (1 byte right now), to have large amounts of data I will need large amounts of relays.  A KiB of this memory would require 256 relays at a 32-bit word length.  Thats a lot!!!

I'm trying to get relay count down some.  And 32 bit words wouldn't be nice.

  Are you sure? yes | no

Yann Guidon / YGDES wrote 04/27/2017 at 20:01 point

One relay per word ? why ?

Using a 2D (array) organisation, you should be able to reduce this, unless I missed an episode.

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