Hello!
For a rocket, we are utilizing a NEMA17 Stepper Motor, along with a L298N Motor Driver. From my understanding (limited experience), we need a 12V battery along with 2A of current to power the stepper motor to its max capabilities. Because of size constraints of the payload, we require a small battery, the full run time of the rocket would be 4 minutes. Ideally, we would like the stepper motor to be constantly working for the full 4 minutes, however, from some calculations we've done, it would take
From different forum posts I've read, I've seen a few things, (Feel free to correct me if I'm wrong on anything I've said):
27A batteries provide the 12V but do not provide enough current that's needed for the L298N Motor Driver.
It is possible to use a LiPo battery, although it is not recommended.
What is something I could look into implementing for my case and are there other battery alternatives that I could look into that would provide both the necessary conditions?
I hope my question makes, if not please let me know! Thank you for your time
Perhaps you mean to say they don't provide enough voltage. 27 A is a lot of current. The L298N is a lousy motor driver, especially for a stepper motor. Switch to a more modern driver. That's the first thing you should do.
After that, a 12 V 27 A battery might be quite good for your project. It will be about adjusting the current from your stepper driver (the L298N can't do that, can it?) to make the motor run smoothly according to the desired speed and the load on the motor.
Hi! Because of time constraints, and accessible parts at the time (Parts were chosen based on what we had available to us months ago), we unfortunately cannot change to a more modern driver, although it would be a great considering in the future if we were to do this again.
I should have clarified in my initial post, my apologies, I realize that I basically said 27Amp batteries, I actually meant A27 Batteries
That's fair,
The members who have worked on this are all fulltime students in the organization most who are senior members who were getting ready for graduation and classes, we did not have much time to work on it full time as we would have hoped like years prior.
That being said, the project works, all PCBs and parts are finished, and tested to work with what our specific needs are. The last roadblock we have is just the battery situation, hence why I figured to ask on this forum.
I appreciate your input though, being that this was the first time I was able to work on anything Arduino related , it was a great learning experience all around and there is definitely room for improvement with what you and others have suggested.
We aren't currently using the A27 batteries. To test the actual project, we were currently using a DC power supply. I was hoping to see if there was an alternative solution that could provide enough voltage and current.
Different members of the organization chose the parts based on prior experience with them and knowledge.