[TriEmbed] Large Wall Charts

[Pete Soper]

I don't think your requirements were well understood. I gathered you 
want to push a momentary contact switch and have some gadget turn on and 
stay on until some period of time has passed or a microcontroller 
preempts the time period by reseting the circuit. The microcontroller 
would use 3.3 volt digital I/O pins like those of a Raspberry Pi system 
for sensing the and controlling the latch state and the gadget might be 
powered by the latch circuit or it might require some other switch like 
a relay.

Have I got that right?

-Pete

On 04/14/2014 12:21 PM, Grawburg wrote:
> I'm looking for large wall charts for resistor band codes, electronic symbols, etc. for the Raspberry Pi
> STEM room at the museum. Anyone know of a good source before I spend an hour searching the Web?
>
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> BTW - I want to pursue my previous question about "latching"  at tonights meeting and review the various options suggested.
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> Brian Grawburg
> Wilson
>