I am new to GoPro and trying to build a custom accessory for it that will connect through the Hero Port. The accessory will have an external battery but will also have a cellular radio.
I would like to know how currently the gopro drains the external battery:
- Does it first use the external battery then the internal one?
- Or does it use the internal battery all while the external one recharges the internal?
Then, there is the question of my cellular radio. Its power consumption will be non-negligeable compared to that of the go-pro. The idea is to connect it to the external battery as well and then when that one runs down, drain from the internal battery. Although I am not sure the Hero Port provides power output through its pins.
Anyone here has some experience on this?