[sdiy] Electronics class for kids

[Jim Credland]

When I was a kid I remember 555 circuits as being somewhat dull.  The 555 provided a kind of cheap magic!  Having some more separate components to understand and meddle with sounds more exciting. 

(These days 555s look like handy solutions, but what are they doing with all my current?!?!) 

On 21 May 2013, at 19:47, BrightBoy <jdec at mindspring.com> wrote:

> Some basic 555 timer circuits can make a lot of noise too!
> 
> Jeff
> 
> -----Original Message-----
>> From: Monse Lozano <panfilero at hotmail.com>
>> Sent: May 21, 2013 1:53 PM
>> To: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
>> Subject: [sdiy] Electronics class for kids
>> 
>> This is my first post to the email list, hopefully it goes through
>> 
>> 
>> I am about to start an after school programs to teach 6th-8th graders basic electronics and I would like to incorporate some audio synth type circuits into the class.  I was wondering if anyone could give me any suggestions for cool noise making projects?  I'm not very familiar with synthesizer design, I've been reading up on it a bit and started putting together a simple sawtooth generator, the one with an integrator and a comparator, where the output ramps up until the comparator shorts the integrator's cap and discharges it.  I'm looking for simple circuits like this, I'm not worried about correcting non-linearities or temperature compensation, just noise makers to get the kids interested.  
>> 
>> much thanks! 		 	   		  
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