I am trying to run a Raspi and NyBoard together off of 2S-14500 batteries from EBL.
The NyBoard runs pretty well by itself when I send commands over the serial monitor, however the problem arises when I have the raspi on top. Suddenly, it starts to do everything very slowly, stutters, or becomes completely unreceptive.
This is a problem as I need to host a webserver and allow the Raspi to accept commands wirelessly and send the commands over serial to the NyBoard. Any suggestions for better batteries I should buy or other ideas?