Anyway, back to Anthony Shawn Johnson's original thread:
Estes Command Control Launch Controller is a great unit.
Unfortunately, the use of 7.2V RC batteries is the expensive part.
and a charger/discharger for nearly $50.00.
So, after the cost of the controller, the batteries and the charger, I
had over $100.00 wrapped up in a controller. That is lots of money to
you and me.
Now, with all that said, I love the Command Control. It can provide
more power than a 12V system (14.4V), it is more flexible than the
Aerotech Interlock, it is more convenient because the batteries are on
board, and it can pretty much fly a butt-load of rockets in a day
without even the least bit of wear as long as you have freshly charged
So, even though it can be more expensive than some other controllers
due to the support equipment you need to buy for it, it is an
excellent controller. Especially for those of us who don't want to
take the time to build our own.
BTW, when you purchase a charger, it is a good idea to get one that
will discharge your batteries also. Since the cheaper 7.2V batteries
are NiCD, they tend to develop a memory unless you discharge them