Wish I had known - would have saved me the headache of making my own (and the cost too) - ah well.
I had the original Estes Pro Series controller. Really nice. Liked it, for the whole month that it worked. Then one day it died. Just dead, period. No magic smoke, nothing.
So I went back to my "old reliable", a Centuri Pro controller from 1970, which has been "slightly modified" (Well, it's the original metal box).
I still use it, though I plan to do a bit of an upgrade to it. At one point I had eight AA nicads in it, which was nice. But it sucked when the nicads were low and I had no way to externally hook up a battery to it. So I removed the nicads (were about dead anyway) and went back to external power, using a Gel Cell. But now I mostly use a 2200 mAh 3S Lithium battery, as used for electric R/C planes.
I recently made a controller for someone, link to page and video below:
https://www.rocketryforum.com/showt...LED-s-clear-Cliplite-holders-amp-Piezo-beeper
[youtube]JF8WmMLUuto[/youtube]
Bottom line, the control you made on your own is likely to be better than one you bought. And if there is a problem, you should be able to figure it out quickly, and know how to fix it.
Also, there is a sort of Star Wars "Jedi building their own Lightsaber" element to building your own launch control.
- George Gassaway