staging timeer

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Smaug Ichorfang - 29 Apr 2008 19:05 GMT

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.

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plano-doug - 29 Apr 2008 20:11 GMT

> 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

.

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Model Forum / General / Rockets / April 2008

staging timeer