Le 06/08/2015, Frédéric a écrit :
> I received my 32 channels servo cape
> <https://github.com/fma38/BeagleBone/tree/master/servos> PCB (from
> SeeedStudio), and started to make some tests with my little hexapod
> <https://www.logre.eu/wiki/Hexapod>.
>
> Now comes the problem of powering up the BBB. My first idea was to use 2
> Ni-Mh batteries: a big one for the servos, and a smaller one for the BBB.
>
> I then found this very interesting topic: BBB - Rechargeable on-board
> battery system
> <http://www.element14.com/community/community/designcenter/single-board-computers/next-gen_beaglebone/blog/2013/08/10/bbb--rechargeable-on-board-battery-system>.
>
> So, I plan to do this: connect a tiny LiPo battery to the PMIC, and
> connect the big battery (6V Ni-Mh) to both servos supply and to the BBB
> (through a 5V regulator, which I can put on the cape).
>
> My next Hexapod will use TowerPro MG996R servos, which are much biger
> than the 9g of the prototype. When moving, the voltage of the battery
> can fall, and may not be enough to power the BBB. So, the tiny LiPo will
> take over, and continue to power the BBB.
>
> But this may happen very often, while the hexapod walk; so the BBB may
> quickly switches from on battery to the other. Is it a problem?
No idea?
Also, is the LiPo battery still charging while the BBB is off (after a
halt)?
--
Frédéric
--
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