Servo32v3 and IMU object

bboy8012

I seem to be stumped. I am trying to piece together my own helicopter hover app, from previous Prop programs. I have found that when I comment out IMU.start the Servo32v3 starts to work, but when I uncomment IMU.start, I get no movement from the servos. Any enlightenment?

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Hunger hurts, starvation works!

Beau Schwabe

bboy8012,

What does the inside of "IMU" look like?· It could be over riding the other pins depending on how it is being used.

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Beau Schwabe

IC Layout Engineer
Parallax, Inc.

bboy8012

I looked at that and didnt see any over runs but here it is.

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bboy8012

Update, it was power requirements I believe, I took out one of the servos and it works for a second. Now on to figureing out that problem.

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shanghai_fool

The servos really should have their own 5V power with heavy pulse
current
capability (such as a battery). The Protoboard 5V regulator is only as
good
as the walwart transformer feeding it and maybe 500ma max including
supplying the 3v3 for the Prop and other devices.

The protoboard supply REALLY needs 9V at 700ma minimum and servos can
easily
draw that much or more when starting to move (for short periods). There
is
not nearly enough power storage in the filter caps on the protoboard for

that much current spikes.

Running servos driven from the protoboard usually means the prop gets
reset.

bboy8012

Thanks for that info. It was really bugging me why it would work. Now I have to start looking at power requirements.

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