Dinuka

Member Since: December 6, 2009

Country: Australia

  • News - It's Time Again - Caption… | about 2 years ago

    So in conclusion ….. I’m sure now you all understand why purchasers of Sparkfun would be misled in to believing those products originated from SPARC International . . Right ?

  • News - It's Time Again - Caption… | about 2 years ago

    So, this…..beep….is….beep….what SparKfUn would like in….beep….planet….beep…AndrOmedA

  • Product SEN-09623 | about 3 years ago

    Hi Rawebb, I had the same issue with the magnetometer. (values is constant at 32, even if I recycle power). Did u manage to fix it ? Is there any effect from soldering external I2C pull ups to the magnetometer behavior ?

  • Product SEN-09184 | about 3 years ago

    @ SFE, with the new FTDI breakout board (where you have put the 6pin female connector at the underside of the board) it is very difficult to attach it to the Atomic IMU 6dof, because then the FTDI board collides with one of the vertical gyro boards :(

  • Product SEN-09184 | about 3 years ago

    have a look at the source code. The 6DoF expects some characters from the PC to display the menu. If you connect the 6DoF directly to a terminal program like hyperterminal, make sure that port settings are correct (115200,8,n,1) and when connected press the “space bar” of the keyboard to display the config menu. IF you look at the source code you can easily figure this out and other commands as well. Note: this is the procedure even if you are connected to hyperterminal via Xbee

  • Product SEN-09184 | about 3 years ago

    have a look at the source code. The 6DoF expects some characters from the PC to display the menu. If you connect the 6DoF directly to a terminal program like hyperterminal, make sure that port settings are correct (115200,8,n,1) and when connected press the “space bar” of the keyboard to display the config menu. IF you look at the source code you can easily figure this out and other commands as well.
    Note: this is the procedure even if you are connected to hyperterminal via Xbee

  • Product SEN-09623 | about 3 years ago

    anyone with an idea when the current 9DOF was taken out of production, and this new revision post was made ?
    I just need to figure out when the new revision would be out and what would be the changes of the new one
    thanks

  • Product DEV-09956 | about 3 years ago

    can somebody please help me find some info about the code that this comes with by default. I did not upload the arduimu code or anythin. Just out of the box, what is the code in this one? Any help wud be appreciated much

  • News - Rocket Sensors and gnuplo… | about 3 years ago

    Very interesting stuff indeed. We’ve been meaning to do something like this for some time now, but could get our (home built) rocket finished.
    Anyhow, for those who are trying to make some sense out of the accl data, think I can help a little.
    1.) Prior to launch - 0ms - 130,000ms. Nothing interesting here. Y axis measuring a high + const value w.r.t x and z means that Y axis was vertical and pointing downwards.Z is measuring zero - it is nearly horizontal. X is measuring a slight + value - it is slightly slanted (which in-turn tells us that the value on Y axis should be slightly less than 1g)
    2.) Launch and Acceleration - This section in the graph is very small. It starts from the point the green line starts a sharp drop at about 130,000ms and ends at the point where the green line starts going up again. This is actually the burn time of the rocket engine.
    3.) Coasting - After the rocket has finished burning, the rocket continues to cost upward for a short time and then starts falling under gravity. When an accelerometer freefalls, it will measure a 0g. that’s why the Y measurement suddenly goes to 0 for a brief moment at around 135,000
    4.) Parachute deployed descent - 135,000ms - 175,000ms Once the parachute deploys, the rocket is not falling under gravity. The downward acceleration is much smaller than 1g, therefore the green line is now not zero, but a negative value. One interesting thing to note is that the chute deployed slightly late. Ideally it should have deployed right at the end of coasting phase. This could be the reason why it got entangled.
    5.) Drop to the roof and staying there - from 175,000ms onwards
    Again not very interesting, but it seems that the rocket dropped on one of its sides, with X axis pointing approximately upwards.

  • News - The NCWP Scavenger Box | about 3 years ago

    Oh my, Very inspiring. Great work. She is one lucky wife !!!

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