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Pipo ISU - a new IMU/MCU board

Posted by Erez R on February 17, 2011 at 4:40am

5411013779_25cd4f132f_z.jpg

 

 

Hi guys,

I've been hard at work making a small, single board hardware platform for stabilization/autopilot purposes.

 

The board is very small.  Currently it measures 1.5"x1.1" (39mm x 28mm).   It runs a 16Mhz Atmel Atmega328p.

Also, included on board are a 3-axis mems gyro, 3-axis mems accelerometer and a 3-axis magnetometer (no in the picture above).

 

Input voltages are 5v-16v. 

The board can see use up to 16 I/O ports for PWM (in/out), external modules etc...

There's also a I2C header for external I2C units.

 

The alpha boards are already running a cut-down DCM code:

 

I'm planning to implement fist a version of the Ardupirates code.

If you're interested in one of these please drop me a line here or via email (erezraviv@gmail.com)

 

 

 

Tags: accelerometer, gyro, imu, isu, magnetometer, mems, pipo, sensors
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Comments

  • Sebastian Jensen February 17, 2011 at 1:25pm

    "less than an ounce"

     

    C'mon Erez you can do better than that ; )

     

    What's the precise weight? We, the nerds that makes stuff fly need to know this.

  • Sebastian Jensen February 17, 2011 at 1:16pm
    Very cool, how about baro?

    I think the MultiWii guys will like it:

    http://www.multiwii.com/

    http://www.rcgroups.com/forums/showthread.php?t=1261382
    MultiWii
    MultiWii project related stuffs
  • Erez R February 17, 2011 at 12:59pm
    Another image to show how small it is:
    http://farm6.static.flickr.com/5099/5403542651_277728c392_z.jpg
  • Erez R February 17, 2011 at 10:46am
    The sensors are:
    Gyro: L3G4200D - 3-axis MEMS gyro.
    Accel - ADXL345 - 3-axis MEMS. I might swap with a Freescale unit if it has the performance to match. Currently you can't beat the ADXL.
    Compass - HMC5843. Tough to get my hands on these but they seem to perform really well.
  • Sebastian Jensen February 17, 2011 at 9:54am
    I like it!

    More details on the sensors please
  • Simon Wood February 17, 2011 at 8:02am

    Impressive little board, worth keeping an eye on. I'd be interested what static position accuracy you can get (without GPS) when you finish the port.

  • Erez R February 17, 2011 at 6:13am
    The price is $95 for the magnetoless version and $120 for the magnetometer enabled version:
    http://www.eraviv.com/store/page2.html

    The Ardu variants are based on Arduino. In my experience the programs tend to be a little hefty. I haven't completed the port so I can't say yet but most of the functionality should be available.
  • 3D Robotics
    Chris Anderson February 17, 2011 at 6:02am
    Given that the Atmega328 has 1/4 the memory of APM's Atmega1280, how do you intend to squeeze the ArduCopter/ArduPirates code in there?
  • tazdevil February 17, 2011 at 5:59am
    hi, very cool , any idea of the price ?
  • Erez R February 17, 2011 at 5:42am
    Thanks!
    I think the advantages are not just the small size.

    The sensors are integrated 3-axis mems sensors. That way they are very orthogonal. The communication with them is digital and not analogue so voltage variations do not drift them.

    I think the biggest advantage is having it all in one board and not having to cobble together stuff from SF/Wii/HK gyros etc...
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