by plano-doug <doug_man_sams@[EMAIL PROTECTED]
>
Apr 29, 2008 at 12:11 PM
Smaug Ichorfang wrote:
> Does anyone have a schematic for a staging time that does NOT use a pic
or
> BASIC STAMP? I have some friends that would like to build a down-scaled
> model of a sounding rocket and just can't afford the $90 or co of
> commercial timer.
You can get a timer for half that. The PerfectFlite MT3G (with G
switch) has a $43 price. I've used mine to successfully airstart
outboards. You would be hard-pressed to roll your own for that
price. And it has a special safety feature requiring the G level to
be maintained for half a second to prevent accidental firing. That
would be difficult to implement without a micro.
http://www.perfectflite.com/catalog/miniT3.html
HTH.
Doug
..
