--> Does the FreeBSD OS even have a function to manage battery capacity ?
I don't think. But as I said mine is a little project. For me is enough to power the device using a battery pack.
--> You are an OS engineer, and you want to try out a tablet with FreeBSD...
In a lot of posts that I wrote,I have specified "tablet" and "mini-pc". I want to invite you to think at this project as a less professional project.
My goals are very easy. Power on the soc,the display using the Liitiokala protected battery and the buck board that you have also bought and that you have indicated as good. And for sure,creating an enclosure where to store the electronic components.
As I have pointed above,guys you have an excessive inclination to think at the projects exclusively in professional terms. And you constantly and continuously criticize every little imperfection and shortcoming that may be there.
My invitation is to put yourself in a situation where you have to take off your usual professional clothes to wear those of a newbie who is trying to learn
(something,not everything,due to the complexity of the project) and achieve a goal that will be certainly not excellent, but,I hope,at least,usable. For me the goal is to be able to use the device out of the mains for 3 / 4 hours,as indicated by you as possible, in an old post.
What amazes me a lot is a cultural difference that I see. You are convinced that one can do everything one wants, perhaps just by reading the instructions on the internet. Me and those who live in my cultural environment are aware of our limits and we do what we can do. The rest we either outsource or we give up adding functions that we are aware we cannot master.
I also read that someone is convinced of the uselessness of even going to university / college to get a theoretical-practical basis. In my cultural universe, having a school education is fundamental. And I have a humanistic one,not an electrical / electronical engineering one,so I can certainly only aspire to do something simple.
So...managing power is possible on FreeBSD (
Power tuning "tutorial"). It would require knowledge of the state of a CPU, and you'd essentially have to poll the battery to generate some sort of battery indicator.
Thanks. I will save this page for a later stage of the project. I will try to implement all the tecniques explained there. It looks advanced for me,but that's an interesting and important chapter to study,to try to implement because it will improve the quality of my device.
The problem I see is that someone who is hell bent on not having to learn about a CAD program
I see only one problem here. That you didn't read what I wrote in a old post,that
I don't exclude to start learning some CAD. So,you can't blame me.
My strategy is to try to find a compromise between the efforts that I should put and the money that I can spend and / or the knowledge that I can manage and the knowledge that's so technical that I can't understand because I don't have the basis.
All of this said, the logic is still board+battery+display+case = tablet PC. That's just so wrong. That said, telling OP to stop for a moment and consider is wasting air. It's time to let them explode a lithium ion battery, incinerate a frankentablet, and let this be a situation where the stubborn get third degree burns because they don't want to listen. This is why I recommend hackaday, because anyone with sense would see a nearly decade old project, identify that buying a tablet that is already supported would be less of a nightmare, and back down from something so ambitious....especially considering they don't want to learn any CAD tools, but are signing up to potentially have to write hardware component drivers.
Man,I started with the idea of using a powerbank because safer than a battery pack,but later I thought I could use a battery pack with a buck board :
and one of you didn't put me off at all....he even bought and tested it and he defined it enough good and safe to be used...
