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1  Using Arduino / Sensors / Re: Question regarding Arduino and 9DOF Sensor on: January 22, 2013, 12:07:41 pm
Alright, I'll look online. Looks like there is no escaping an online order.

I'll likely just buy a new sensor and I'll just be out $20 on this one (all part of the learning process). Maybe in the future I will have more experience and will find a use for it.

Thanks again for all the help.
2  Using Arduino / Sensors / Re: Question regarding Arduino and 9DOF Sensor on: January 22, 2013, 09:47:02 am
Thanks for the great information.

Question three really was the one that stumped me Because it stated "The Inertial Two Sensors Xplained development board has an onboard 2.5V regulator to supply power to all three sensors." I'm glad to have that cleared up and it looks like I'll need to find either a level converter or another sensor board.

EDIT: I think I understand now. The A4/A5 pins used for SDA and SCL are 5V and we need to protect the sensor from that 5V source. Thus the level converter shifts those signals to/from 5V to 3.3V, correct? The power isn't so much the issue because that is regulated to 3.3V from the Arduino Uno.

The reason I got this sensor board is because it was affordable and available at Digi-Key. I get same day delivery on my Digi-Key orders and it was really the only one I could find on their website.

Are there any sensor board you would recommend that are in the same price range (preferably available from Digi-Key)?

Thanks again
3  Using Arduino / Sensors / Question regarding Arduino and 9DOF Sensor on: January 21, 2013, 11:15:08 pm
Hello everyone,

I am relatively new to developing with Arduino and the field of electrical engineering in general so I am looking for a more experienced eye to look over my work to prevent any costly mistakes before they occur (and clear up any confusion I have.)

I have purchased an ATAVRSBIN2 (Datasheet) and would like it to cooperate with the Arduino (Uno).

I have managed to find one other topic regarding both the ATAVRSBIN2 and Arduino (link)but I am a bit confused and before I hastily attempt to do something (and ruin something), I want to make sure my setup looks good.

My current strategy (unimplemented) is to use the GND, PWR, SDA and SCL to use I2C with the Arduino.

Question 1: Can I safely use the 3.3V from my Arduino to power the device?

Question 2: Do I need a 4K7 pull-up resistor for the SDA/SCL connections (as specified here) or am I correct when I read "The I2C pull-up resistors are included on the Inertial Two Sensors Xplained board. " (Top of page 4 in the datasheet).

Question 3: In the article/blog I referenced, the two of them used a "logic level converter" (link), do I need this and what purpose is it serving? (From my understanding, it's just regulating 5V to 3.3V; which I believe my Arduino board already does for me.)

Thanks in advance, sorry if this board is not intended for this. I tried to be detailed in my questions but if I missed anything, just let me know.
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