[dorkbotpdx-blabber] sort of microservo related...

[Donald Delmar Davis]

worm gear.

On May 26, 2008, at 11:52 PM, Jared Boone wrote:

> On May 26, 2008, at 10:19 PM, Anthony Asterisk wrote:
>
>> On the topic of mechanical/somatic outputs, what is a low cost way  
>> low power way to create a yes/no flag type of effect.  I'm looking  
>> for an indicator that would pop up a flag and not be a continuous  
>> power draw.
>> Anthony
>
> What are your constraints?
>
> 	Cost: $0.10, $1, or $10?
> 	Power: 10uW, 100uW, 1mW?
>
> How long does the effect need to persist? A minute, an hour, a day,  
> a week, forever?
> Will this be inside a device that experiences mechanical vibration?  
> Near unusually large magnetic or electrical fields?
> And what about size? 1cm cubed, 10cm cubed, 100cm cubed?
> Weight?
>
> Here's some random ideas, without much idea what your constraints  
> really are:
>
> - Buy a low-power (signal) relay with a latching mechanism,  
> disassemble it a bit, and attach your flag doodad to it? No current  
> draw, but could be bulky. Digi-Key has a selection of latching  
> relays priced in the $4-$6 territory.
> - A locking solenoid arrangement -- kinda like a latching relay, but  
> probably simpler to rig.
> - Get a 50uA panel ammeter (like the ones I use in my Chronulator)  
> from All Electronics, and move the needle? It'd be a constant, but  
> small current draw. I can get the meters for about $6.
> - The stuff they use in e-Ink, which changes color (black/white)  
> depending on what charge polarity was last present nearby.
> - A microservo...
>
> 	- Jared
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