Rockbox mail archive

• Next message: Daniel Stenberg: "Re: [PATCH] compiled-in and loadable fonts"
• Previous message: Andrew Jamieson: "Re: Rockbox for the player"
• Maybe in reply to: Pedro: "Rockbox for the player"
• Next in thread: Leif Sawyer: "RE: Rockbox for the player"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

> The battery voltage will drop considerably
> (compared to the
> idle voltage) when the drive is spinning up due to the extra
> current draw
> and the internal impedance of the batteries.

Why don't we simply do away with all this "is the hdd spinning" bollox by
using a recusive filter on vBat.

Like for example a 90% filter:

filteredVbat = vBat - ((vBat - filteredVbat ) * 90) / 100;

where filteredVbat is declared static and vBat is the instantaineous battery
voltage.

Only thing is that it needs to be called at a constant rate but wouldn't
that be better than storing loads of instantaneous values and doing averages
etc?

Stu.

• Next message: Daniel Stenberg: "Re: [PATCH] compiled-in and loadable fonts"
• Previous message: Andrew Jamieson: "Re: Rockbox for the player"
• Maybe in reply to: Pedro: "Rockbox for the player"
• Next in thread: Leif Sawyer: "RE: Rockbox for the player"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]