I am working on an Arduino project at the moment, with the following board:
And it says I need 3.7 V of LiPo to power it.
However I also have a valve that I want to open and close (with a relay that is controlled by the Feather) and that needs 7.4 V. So I considered buying a 7.4 V LiPo battery (like one for RC cars).
The question now is:
Is there a way to use the 7.4 V Battery and only use 3.7 V for my Feather, while maintaining the full 7.4 V for my valve relay?
And if so, how would I do that? (Would it also still be possible to charge the 7.4 V battery via the USB port of the Feather, as written in the description?)
I am an absolute beginner when it comes to electrical engineering.
Thank you for your help.