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compass module

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compass module Customers Reviews

  • good choice

    posted by ltomsik

    Simple breadboard with HMC5883L compass, which is accessible using I2C and can manage 5V on I2C buss.Breadboard has 5V -> 3.3V regulator so no external component is required.HMC5883L is well supported by Arduino libraries but it's no problem to write own routines.
    Good for any DIY project which needs compass navaigation.
    It is 3 axes magnetometer, it means that you get 3 values for each axes and it's up to you to count the bearing.
  • Short on documentation.

    posted by sworteu

    Can be aimed towards the sky. Is very easy to mount. Comes with all you need except for documentation (a cd is there but it doesn't tell you how to connect).
    Connection documentation is:Red: 5voltTiny Black: GNDThick black:Unknown (please let me know!)White: Tx (put this in a serial RX)
    Could be better, but i must say it works. However it's hard to know exactly how to connect it and make it work perfectly if some wires are unknow.
  • Very useable magnetometer

    posted by ggutshal

    Very small form factor. I2C interface so it doe not consume too many IO pins. The HMC5883 magnetometer is a pretty standard part in the microcontroller/robotic community. Libraries exist for arduino and netduino
    Should be very useful for robotics, unmanned aerial vehicles or other implementations requiring the detections of orientation. Alternatively this module could be used in any application that calls for a highly sensitive 3d magnetometer.
  • Works as it should

    posted by cmichal

    This is a nice board with a 3-axis accelerometer, ADXL345, and 3-axis magnetic field sensor, HMC5883L. The board has has a 3.3V regulator so it can be powered from 5V and interfaced directly to a 5V microcontroller. It does what it is supposed to do.
    The ADXL345 uses the alternate address (0x53) rather than 0x1D.Arduino libraries to access the two chips are available at:https://www.loveelectronics.co.uk/Tutorials/12/adxl345-accelerometer-arduino-tutorialhttps://www.loveelectronics.co.uk/Tutorials/8/hmc5883l-tutorial-and-arduino-libraryThe code examples there worked for me, though the call to set-up the ADXL345 needed to specify the correct address (0x53) as the default doesn't match the board. The ADXL345 code example sets the sensor to the 2g range, which was no good for me - one of the axes has a ~4g offset so it was simply pegged on the 2g range.Both sensors require offset and scale calibration before they are useful.
    Good value for a simple board to access these two chips. The sensors themselves are not exactly plug and play though - calibration is required before they are useful.


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