Author Topic: Question regarding IMU selection  (Read 434 times)

0 Members and 1 Guest are viewing this topic.

Offline VoltairevillainTopic starter

  • Beginner
  • *
  • Posts: 2
  • Helpful? 0
Question regarding IMU selection
« on: April 06, 2013, 07:34:47 PM »
Hi everyone, first post here..

I'm trying to find a very simple IMU for a self-balancing skateboard prototype I'm building.

I require a single axis IMU (1 gyro and 1 accelerometer), with an analog output (0v-3.3v).  It will be communicating with a standard Arduino controller (Analog would be preferred)

Gyroscope sensitivity required: +-300deg/s
Accelerometer sensitivity required: +-3g


So far I've been looking through Sparkfun and AdaFruit and I can't find anything compatible.  I must be missing something but I can't find anything anywhere.

Does anyone have any suggestions on where I can find this?  Thanks in advance for your help!

« Last Edit: April 07, 2013, 08:50:49 AM by Voltairevillain »

Offline waltr

  • Supreme Robot
  • *****
  • Posts: 1,941
  • Helpful? 98
Re: Question regarding IMU selection
« Reply #1 on: April 07, 2013, 08:34:21 AM »
SparkFun has this accelerometer:
https://www.sparkfun.com/products/9332
It is however a 250g full scale so would not be sensitive enough for your needs.

Whereas, these accelerometers are 3-axis and have a full scale range better suited:
https://www.sparkfun.com/products/9269
https://www.sparkfun.com/products/9652

These will work fine if you only use one output.
Same with the Gryo. Use a 2 or 3-axis gryo and only use one output like this one:
https://www.sparkfun.com/products/11341




Offline VoltairevillainTopic starter

  • Beginner
  • *
  • Posts: 2
  • Helpful? 0
Re: Question regarding IMU selection
« Reply #2 on: April 07, 2013, 08:54:07 AM »
Thanks a lot for the information.  I realize I had forgot to list the sensitivities I was after so I edited my original post.

I will look into these sensors.

Thanks again,


Offline waltr

  • Supreme Robot
  • *****
  • Posts: 1,941
  • Helpful? 98
Re: Question regarding IMU selection
« Reply #3 on: April 07, 2013, 01:51:12 PM »
Ok. Yea, I forgot to ask what sensitivity you needed.

An advantage of using 3-axis devices is that you can then just mount them in the most convenient way. Then chose which axis to use as an output.
I do not think there is any price advantage between a 2/3-axis senor and a 1-axis sensor.


 


Get Your Ad Here