Time to start making relays - March 15, 2018

A project log for Uglytech - The cardboard relay

After talking with Jez - Morning.Star about coils and magnets, I decided to try to roll my own relay using cardboard, paper and fasteners.

dr-cockroachDr. Cockroach 03/15/2018 at 23:333 Comments

Looks like I might have a use for relays with my #The Cardboard Computer - IO is my name project after all.   I am looking into ways to interface IOs output to a converted typewriter and need isolation while still using materials/parts that are on hand here in my secret lab :-) Need 16 SPST relays, just need to get the coil current demands down to a manageable level.

Here is the coil for relay number 2. Using double thickness of cardboard at each end and turned 90 deg. for strength.

Here is the result the morning of March 21, 2018...

The counter weights for breaking the contact will be replaced by a spring or rubber band. Better core material is on the horizon.

As of this afternoon, IO and the printer both are using the relay as isolation and working well.


Morning.Star wrote 03/16/2018 at 07:44 point

I'll give you a hand my friend. We can do them in stages, handing off completed parts to one another for assembly.

This would indeed constitute a cardboard relay I believe.


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Dr. Cockroach wrote 03/16/2018 at 07:52 point

Hey there Jez, have not given up on your other ideas but the sound of relays clattering away is almost too much to pass up and the first one still works :-D

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Dr. Cockroach wrote 03/16/2018 at 09:20 point

Relay, hand off, stages..... Good one :-D

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