Difference between revisions of "Ankle-0406"

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===PWM output IMU===
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[[Biomechatronics_Documentation | Back to BM]]
*uses ADXL311 and ADXRS300
 
*pack includes eval board from STM that contains LIS3L02AS4 (3 axis) with 110k output imp
 
*eval board is EK3L02AS4 - $52 from dig.  Board contains volt reg and acc output buffers.
 
  
  Greddy IMU pinout (top down / l to r) :  
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[[GIMUAMP |GIMUAMP]]
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[[QAKAMP | QAKAMP]]
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[[AKBRK | AKBRK]]
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===First version IMU===
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*uses 2 axis ADXL311 linear acc
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===Current (Greddy) IMU===
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*[http://www.analog.com/en/prod/0,2877,ADXRS300,00.html ADXRS300 Rate Gyro] - needs clean 5V supply, output is independent of supply voltage.  Has 14KHz switcher, should use separate power and signal ground.
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*pack includes eval board from STM that contains [http://www.st.com/stonline/books/pdf/docs/10221.pdf LIS3L02AS4] (3 axis) with 110k output imp
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*eval board is [http://www.st.com/stonline/prodpres/dedicate/mems/boards/boards.htm EK3L02AS4] - $52 from dig.  Board contains volt reg and acc output buffers.  [http://www.st.com/stonline/prodpres/dedicate/mems/boards/ev_kit/ek3l02as4/app_no.pdf APP NOTE]
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LIS3L02 output is dependent on supply with zero acceleration at Vsup/2 (+- 10%).  There doesn't seem to be a signal that corresponds to zero acceleration!
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  Greddy IMU pinout (top down / left to right) :  
 
  Rate Gyro: 5 GND x y z
 
  Rate Gyro: 5 GND x y z
 
  STM Acc : 5 GND yf, zf, xf, y, z, x
 
  STM Acc : 5 GND yf, zf, xf, y, z, x
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* [http://memsense.com/downloads/datasheets/MAG3_SMT_Datasheet_revD1.pdf Commercial MAG3 IMU]
 
* [http://memsense.com/downloads/datasheets/MAG3_SMT_Datasheet_revD1.pdf Commercial MAG3 IMU]
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* Strain gauge part # SG-7/1000-DY43 (or 93) from omega

Latest revision as of 01:15, 20 April 2006

Back to BM

GIMUAMP QAKAMP AKBRK

First version IMU

  • uses 2 axis ADXL311 linear acc

Current (Greddy) IMU

  • ADXRS300 Rate Gyro - needs clean 5V supply, output is independent of supply voltage. Has 14KHz switcher, should use separate power and signal ground.
  • pack includes eval board from STM that contains LIS3L02AS4 (3 axis) with 110k output imp
  • eval board is EK3L02AS4 - $52 from dig. Board contains volt reg and acc output buffers. APP NOTE

LIS3L02 output is dependent on supply with zero acceleration at Vsup/2 (+- 10%). There doesn't seem to be a signal that corresponds to zero acceleration!


Greddy IMU pinout (top down / left to right) : 
Rate Gyro: 5 GND x y z
STM Acc : 5 GND yf, zf, xf, y, z, x
xf,yf,zf are filtered and buffered
  • Strain gauge part # SG-7/1000-DY43 (or 93) from omega