Project Thread: building Blinky

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Korrelan

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Re: Project Thread: building Blinky
« Reply #15 on: April 14, 2019, 04:38:49 pm »
Most magnets are ferous based and can't be soldered, and heat destroys magnets.

 :)
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LOCKSUIT

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Re: Project Thread: building Blinky
« Reply #16 on: April 14, 2019, 04:41:05 pm »
use super glue!
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Hopefully Something

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Re: Project Thread: building Blinky
« Reply #17 on: April 14, 2019, 05:45:42 pm »
OK, thanks.  I'll try setting the magnets on springs with some sort of electrically conductive glue.
Of course I can still solder glue-able plates to the ends of the springs. That should allow the magnets to self adjust their alignments while not wearing down their electrical leads.  ;D

EDIT: Micro springs are rare and expensive, I'll settle for braided wire.
« Last Edit: April 14, 2019, 10:32:06 pm by Hopefully Something »

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goaty

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Re: Project Thread: building Blinky
« Reply #18 on: April 15, 2019, 07:26:54 pm »
super glue is capacitant, its not conductant.

Basics of a robot->
      * pump, which is always charging its battery. (could be solar power.)
      * sensor, which get the power they need for the power source, and goes to the computer. 
      * computer, which comes from the power source in a lower amplitude and the sensor to the legs.
      * muscles, with force transfer down the legs from the computer and the power source together.

My design is a 1 mould body,  im using belts down the legs and they mould with the rest of the leg. *thumbs up*  I want it this way so I could make as many as I want, 1 cycle a bot.

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Korrelan

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Re: Project Thread: building Blinky
« Reply #19 on: April 15, 2019, 11:41:12 pm »
Why do the magnets have to incorporated into the contacts, one large magnet behind the face holding the spring contacts would surly work better. Copper isn't magnetic.

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Hopefully Something

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Re: Project Thread: building Blinky
« Reply #20 on: April 15, 2019, 11:43:37 pm »
You're right, superglue can work but it's iffy. I'll get a big magnet and solder the small magnets while they are stuck to it. That way it's either a heat sink, or a high temp magnetic realignment. So back to solder. But I'm liking the braided wire, it can't get bent out of shape like springs, and it's more solder-able. 

Edit: this is  @goaty, not Korr,  lol, I wouldn't just start talking about superglue.  :2funny:
« Last Edit: April 16, 2019, 12:56:42 am by Hopefully Something »

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Korrelan

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Re: Project Thread: building Blinky
« Reply #21 on: April 15, 2019, 11:48:18 pm »
I actually meant do away with the small magnets altogether and use just two larger magnets to pull the contacts together, one for each contact face.

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Re: Project Thread: building Blinky
« Reply #22 on: April 15, 2019, 11:49:10 pm »
Why do the magnets have to incorporated into the contacts, one large magnet behind the face holding the spring contacts would surly work better. Copper isn't magnetic.

 :)

I'd like the individual contacts to find themselves. Also, I don't want the magnets to have far reaching forces. Copper isn't magnetic... Yes... why?

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Hopefully Something

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Re: Project Thread: building Blinky
« Reply #23 on: April 16, 2019, 12:29:18 am »
I actually meant do away with the small magnets altogether and use just two larger magnets to pull the contacts together, one for each contact face.

 :)

Got it. But then it's either unstable (because the contacts would want to slip past each other to allow the magnets to get closer). Or, the geometry of the contacts makes it stable, (ball and socket for example) but then you have to have perfect alignment.  Individual magnets are stable and self aligning.

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Art

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Re: Project Thread: building Blinky
« Reply #24 on: April 16, 2019, 03:52:31 am »
Sounds like a possible job for electromagnets. Place and secure them where you wish then energize them as needed and when desired.
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Re: Project Thread: building Blinky
« Reply #25 on: April 16, 2019, 06:27:20 am »
I wouldn’t want to waste power holding brain cells together, but electromagnets could be used for artificial muscles. Air muscles require a tank and compressor (both pistons, and texflex with rubber). Hydraulics are slow, and my twisted string idea has the danger of becoming a catapult. Tiny electromagnets somehow joined in strands though… Oooh that’s cool.

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goaty

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Re: Project Thread: building Blinky
« Reply #26 on: April 16, 2019, 10:57:49 am »
I wouldn’t want to waste power holding brain cells together, but electromagnets could be used for artificial muscles. Air muscles require a tank and compressor (both pistons, and texflex with rubber). Hydraulics are slow, and my twisted string idea has the danger of becoming a catapult. Tiny electromagnets somehow joined in strands though… Oooh that’s cool.

I just thought and that magnet idea seems good,    Magnets are amazing things, but im not utilizing them because I need a design I can mass manufacture, im more into those soft robots, because they are all 1 homogeonous substance, except I probably will do without the hydraulics as well, because its trickier than pully strings I think.

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Art

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Re: Project Thread: building Blinky
« Reply #27 on: April 16, 2019, 01:38:15 pm »
While hydraulics are extremely powerful and exact, there is always the chance for leakage, which could, in many circumstances, lead to disastrous results.
One other downside for pneumatics is the buildup of condensation which left unchecked could also wreak havoc in a confined or isolated system.

Access to a 3D printer might prove useful for placement and the possible development of suitable "Hold down" devices like clamps, brackets, etc.

Just some thoughts.
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Korrelan

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Re: Project Thread: building Blinky
« Reply #28 on: April 16, 2019, 02:25:38 pm »
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