I am interested. I would like to see a good build threat.
For batteries, something like this will work. https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11857 I use them with my Raven.
These extensions can be cut up to make leads for connecting to your project and for charging. This is the easiest way to go.
Alternatively, you can roll your own with these connectors. This is what I did to make a charging harness until someone pointed out the extensions. You solder the terminals onto your wires and then press them into the housings. The battery will plug into these.
Mouser 538-51047-0200 Molex 2 position housing
Mouser 538-50125-8000 Molex terminals
You will need a charger and you need to make sure your matches or whatever you are trying to light will work on 3-4v if you go the single cell lipo route. My homemade Christmas bulb deployment charges work fine with the low voltage. Some matches/igniters may not.
Chuck, I'm not sure I understood your response. I think we are saying the same thing. I recommended buying the precrimped extensions in my link. I just mentioned the molex terminals in case he had a reason to make his own. But maybe you are referring to something else? I am curious because I learn alot from how others do things.
I have been trying to standardize and modularize my AV connections to make it easy to move things between airframes. E.g. I use Deans 4pin connectors on my Raven and in all of my electronic deployment rockets so it is easy to just plug in the Raven and have all eight connections made (or four if its not DD). I have color coded the connectors as well with black being for apogee outputs and red for main.
I looked at the molex connectors in the past. They requires a little tool if I am not mistaken to crimp them. To make up for buying the tools, you would to make a lot to make up for that cost. It a crimper is not needed then I am not well informed.
I think we are on the same page. The precrimped harnesses are the way to go. However, if you just want to or have special requirements you can use the molex connectors. I do not have a crimper but used solder and folded the crimp tabs with a small pair of pliers.
Here's an interesting 555 based deployment timer project I stumbled across a while back:
https://www.thefintels.com/aer/protected/timer.htm
Cheers!
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