rumble pak question

[Cojiro]

the rumble pak that i have takes two AA batteries. if i ran this off my 3.3v line instead, how big of an effect would it have on the life of my system?

[timmeh87]

Negligible

Running a motor from the CPU power rail might make things go a bit screwy though...

[argelfraster]

2 AA's = around 5v

[smitty]

2 AA's = around 5v

But a AA is 1.5v, how does 1.5 * 2 become 5?

[timmeh87]

[argelfraster]

Oh yeah
Don't know what I was thinking about...

[Cojiro]

So do you think it would be worth a try?

[smitty]

You might as well try, some 3rd party rumble packs didn't need batteries, so it has to be possible.

[Zeturi]

If what Smitty says is true, then you should be fine. You could just tie the voltage and ground lines together with what the controller uses.

[smitty]

If what Smitty says is true, then you should be fine. You could just tie the voltage and ground lines together with what the controller uses.

I'm not sure if those packs used the whole 3 volts that a regular one does. But it's still worth a try.

[MarioOwnsAll]

I'm sure you could run it just fine off the 3.3v line but I dont recommend rumble packs in portables.