timer prototype

I'm building the kite aerial photography timer circuit from Make magazine vol 2, and this is the prototype. I changed the circuit a bit from the magazine, because sometimes just keeping the kite up for more than a minute is a challenge. :) I used a 2 MΩ trimpot in series with a 680K resistor to adjust the timer interval from between 20 and 40 seconds.

 

Yay, it works!

Done