Gunstar
Well-Known Member
- Joined
- Mar 2, 2018
- Messages
- 144
- Reaction score
- 63
I'm getting back into the hobby and I need to make a change in my home made launch system. It was built to use polapulse batteries (batteries that were built into the old Polaroid camera film packs). That isn't an option any longer so I need to modify it. I'm doing low power rocketry, with the possibility of clusters of 3 or 4 D engines at most. Would 4AA batteries give enough juice for that, with some to spare for the power LED and a piezo buzzer that sounds when the circuit to power the igniters is active? What about using M21/23 N-cell batteries, they are 12V and half the size of a AAA but I'm not sure how much current they give, or should I go with 1 or 2 9V batteries?
Also, the power source used to fire the igniters is at the launchpad, the controller uses a 9V to trip a relay at the launch pad that closes the circuit to light things up.
Also, the power source used to fire the igniters is at the launchpad, the controller uses a 9V to trip a relay at the launch pad that closes the circuit to light things up.