"A good new IMU is the Mongoose by http://store.ckdevices.com for 115 $US incl. shipping.
 
In addition to ADXL345  triple axis accelerometer, ITG-3200 triple axis gyroscope, HMC5883L triple axis magnetometer it has a BMP085 barometric pressure…"

"James,
 
seems you are not even sure if is this going to be a AHRS or just a breakout board for a couple of sensors?
 
If I were you, I would do some research, then compare features of existing and upcoming IMUs, and then think about what niche to…"

"I think the may difference is that the ArduIMU+ has a processor and runs a DCM filter to process it's sensors raw data.
While your Sparkfun 9DOF Sensor stick is a breakout board for three sensors only. No processing of the raw sensor data at all.
So…"

"Please keep in mind that the helium will act like any other gas: When heated by sunshine it expands, and provides extra lift. Danger is you not being able to get the whole thing back to ground with the extra lift or even the balloon popping form the…"

"It's a shame that there is no way to connect a GPS and integrate it?
 
http://www.sparkfun.com/products/10125"

"One thing I noticed recently:
My phosphor e-ink watch is totally readable even in brightest sunlight, while its hard to  notice if the screen of the my Sony Ericsson 750i mobile phone is on at all.
 
I guess a ebook reader with e-ink screen would be…"

"Hi Scotty,
 
at what Hz does the ArduIMU provide data as a default?"

"Folks,
 
only the last video shows actual video footage taken with such a system.
And its quite shaky for my taste.
 
I would like to see videos taken in real world flying conditions to evaluate them.
 
Thanks,
Jan"

"Looks good.
 
Obivous questions:
How does one avoid it being "off" in reality?
I understand it needs GPS coordinates to compensate for sensor drifting?
Do yo plan to sell it? When? Where? How much?
 
Thanks,
Jan"