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On 22 Dec 2005 05:49:13 -0800, "mark3" <goldenopaltree@xxxxxxxxxxx>
wrote:
>Hi to all
> Thanks for responding to my questions, I must
>apologize for my explanations I'm in a learning process about
>electronics. I'll be running a power adapter from 240 AC input
>Converting into adjustable 3v -12v DC output ,current is 1amp but will
>probably run the 555 timer cover the maximum voltage of one of the
>toys(9v) the other three toys in the circuit will run at 1x 3v and 2x
>6v with each toy been activated with a independent push button switch
>.The circuit I would like to build is for a 3yr old girl with multiple
>physical and intellectual disabilities , she is able to push buttons;
>which stimulates her with color and sound. My aim is build a
>electronical unit in which I'm able interchange various toys with
>various voltages from 3-9V either home made by myself (DC transistor
>radio, motorized bells) or bought, that will help stimulate her
>development.
There is an organisation called "TASH" (Technical Aids & Systems for
the Handicapped" (http://www.tashinc.com/index.html) that deals with
this sort of thing. You may find something there to help you.
About 10 years ago I designed a unit for the local Kinsmen Rehab group
that could be controlled by one or two switches and scanned through 8
functions. It was an improved version of a TASH product called a
"Kincontrol". It had relay outputs, and just provided contact
closures, so its outputs could be connected in parallel with the
existing switches on your daughter's toys - no need for the device to
provide (or care about) the toy's power requirements (as long as they
don't exceed the relay contact ratings.
--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
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