Daedelus

• Product SEN-10724 | about 2 years ago

  Now I’m wondering if anyone has tried to use more than one of these boards with a single Arduino? I have heard that there is a way to daisy chain them on the I2C bus, but there has to be a way to deal with the fact that the individual chips have the same addresses.

• Product SEN-10736 | about 2 years ago

  I did get it to work using the 1.3.3 Razor_AHRS code. I may have edited the post above after you saw it.

• Product SEN-10724 | about 2 years ago

  For anyone else still struggling with this board, I got the Razor_AHRS 1.3.3 code from here: https://dev.qu.tu-berlin.de/projects/sf-razor-9dof-ahrs/files to work by changing around the values in the SENSOR_SIGN array to {-1,-1,-1,1,1,1,1,-1,-1} in Razor_AHRS.ino and switched the buffer addresses for magnitom[0], magnitom[1] in Sensors.ino.

• Product SEN-10736 | about 2 years ago

  That has been a source of confusion. When I looked at the data sheets, it looked like the Y direction was toward the hole and X was to the right for the Accel and the Gyro, but the Mag has the Y to the right and X toward the 4 hole row.

  Got it! I changed around the values in the SENSOR_SIGN array to {-1,-1,-1,1,1,1,1,-1,-1} in Razor_AHRS.ino and switched the buffer addresses for magnitom[0], magnitom[1] in Sensors.ino.

  Works as expected now.

• Product SEN-10736 | about 2 years ago

  I’m having the same problem with the 10724. It appears that the MAG is rotated 90 deg CCW on the board compared to the Razor so that X is now Y and Y is -X. I’ve tried changing the SENSOR_SIGN value and the magnetom[] axis but I am still missing something. Any help?

• Product SEN-10724 | about 2 years ago

  Still not getting it. The 9DOF-Razor test seems to indicate that I am getting readings from all three sensors.

  Is there a good write up on what the numbers represent and how to use them?

• Product SEN-10724 | about 2 years ago

  Figured it out. Seems to work. Now to figure out how to get the VPython example working as described for the Razor here: http://pranjalchaubey.wordpress.com/2011/04/14/razor-imu/

• Product SEN-10724 | about 2 years ago

  OK did that. Got it to load, now what? I have no idea from the documentation as to what I should expect to see or where. I’m using a Duemilanove.

  Here is the console output from the upload:

  C:\Documents and Settings\Thomas Phillips\Desktop\9DOF-Razor-IMU-Test-Firmware>make program_serial C:\progra~1\Arduino\arduino-1.0\hardware\tools\avr\bin\avrdude -p atmega328p -P COM4 -c stk500v1 -b 57600 -CC:\progra~1\Arduino\arduino->1.0\hardware\tools\avr\etc\avrdude.conf -U flash:w:main.hex

  avrdude: AVR device initialized and ready to accept instructions

  Reading | ################################################## | 100% 0.05s

  avrdude: Device signature = 0x1e950f avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed

      To disable this feature, specify the -D option.
  

  avrdude: erasing chip avrdude: reading input file “main.hex” avrdude: input file main.hex auto detected as Intel Hex avrdude: writing flash (13370 bytes):

  Writing | ################################################## | 100% 6.70s

  avrdude: 13370 bytes of flash written avrdude: verifying flash memory against main.hex: avrdude: load data flash data from input file main.hex: avrdude: input file main.hex auto detected as Intel Hex avrdude: input file main.hex contains 13370 bytes avrdude: reading on-chip flash data:

  Reading | ################################################## | 100% 5.64s

  avrdude: verifying … avrdude: 13370 bytes of flash verified

  avrdude: safemode: Fuses OK

  avrdude done. Thank you.

• Product SEN-10724 | about 2 years ago

  Is there any example code available for this board yet? I seem to need a jump start.

No public wish lists :(