Daedelus
Member Since: March 16, 2009
Country: United States
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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.
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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.
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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.
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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.
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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?
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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?
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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/
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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.
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Is there any example code available for this board yet? I seem to need a jump start.
No public wish lists :(