[sdiy] 555 adsr

[James Dunn]

Hi list,

I have built a simple 555 based ADSR, the same as this one here: 
http://www.uni-bonn.de/~uzs159/adsr2.png
I would really like to have a trigger input on it. As far as I can tell, 
this would mean disconnecting pin 4 (reset pin) from the gate, and maybe 
connecting it through a 10k resistor to +V..? I'm been trying a few 
things out on the breadboard and haven't much luck - any ideas? Is there 
a simple mod for this?

thanks
James