Re: [Gumstix-users] Robostix regulators

[Arnar B. <ar...@gm...>]

On 3/27/07, Arnar Birgisson <ar...@gm...> wrote:
> I'll measure the current on v_robobatt and v_batt seperately, I expect
> v_robobatt to be quite low as you said since the robostix doesn't have
> any sensors/peripherals connected.

The load on v_robobatt was ~110mA. Should I be safe to put six cells
directly on that (NiMHs, so nominal voltage is 1.2V per cell)?

> I have a switching regulator that I'll try and see if that makes a difference.

Ok, that helped alot - the whole thing ran for exactly one hour on
five AA cells. They were almost fully charged - I'm charging now so I
can measure the time with comletely fresh cells.

> > That doesn't sound right to me. The robostix should work fine with
> > even only 5v. When you measured the battery pack, were you measuring
> > under load?

Measuring under load gives the voltage I expected, staying at about
6.2V for most of the time.

Arnar