by

|   August 16, 2008 at 8:40 AM

Hi there,

Could you please confirm that the small surface mount component to the left of the chip is a 1uF capacitor to eliminate noise from the power supply?

If it is not, could you say what it is, and what it is for?

Thanks!

by

|   October 18, 2008 at 1:51 PM

Can this chip cope with a +5V input for control logic?
Thanks

by

|   November 19, 2008 at 7:05 PM

Hey p07gbar I'm using this device with 5v output from my arduino and it's running fine.
And syvwich, yes, I do believe that that's what the cap is and that's what it is for as recommended in the HMC6343's datasheet.

Lastly, this thing is fun and easy to work with, but I may have accidentally reset my hard iron offsets because my compass heading is giving me errors. The tilt and pitch are fine though.

Thanks for breaking this out Sparkfun!
-bg

by

|   January 19, 2009 at 11:29 AM

BilalGhalib,

Can you share the arduino code with us?

by

|   February 26, 2009 at 4:38 AM

------------------------------------------------
Arduino Header HMC6343
------------------------------------------------
#ifndef HMC6343_h
#define HMC6343_h
/**
* analog input 5 - I2C SCL
* analog input 4 - I2C SDA
**/
class HMC6343
{
private:
// I2C Client Address of the sensor
const static int i2cAddress= (0x32 >> 1);
HMC6343(){};
public:
static int getAngle();
};
#endif




------------------------------------------------
Arduino CPP Code HMC6343
------------------------------------------------
#include "WProgram.h"
#include
#include
#include "HMC6343.h"

int HMC6343::getAngle()
{
byte headingData[6];
Wire.beginTransmission(HMC6343::i2cAddress);
Wire.send(0x50);
Wire.endTransmission();
delay(2);
Wire.requestFrom(HMC6343::i2cAddress, 6);
int i = 0;
while(Wire.available() && i < 6)
{
headingData[i] = Wire.receive();
i++;
}
return (headingData[0]*256 + headingData[1])/10;
}

by

|   April  3, 2009 at 11:50 AM

Has anyone gotten this compass to work with the Devantech usb-i2c module? After frustrated coding, and finally scoping the data and clock lines, my conclusion is that this compass utilizes clock stretching which the Devantech module does not support. I would love to hear otherwise, if anyone has gotten it to work. Thanks.

by

|   June 15, 2009 at 10:04 AM

I couldn't find this in the datasheet, but does this output pitch and roll tilt angles? Or just 1 tilt output?

by

|   September 27, 2009 at 8:41 PM

On page 10 of the datasheet - the command table shows you what data it can output.

Pretty cool as you can get raw data from the 3D magnetometer, 3D Accelerometer as well as the pitch & roll angles - oh, yeah, and also the compass heading :P

by

|   October  3, 2009 at 6:03 AM

Does anyone know if this device is officially 5V I/O tolerant? The datasheet has no useful electrical specification data

by

|   December 24, 2009 at 10:29 PM

can you guys tell me what calculations are needed for the tilt compensation because i have the razor 6dof imu and probably getting the 3 axis magnometer so how do i use the accelerometer to do compensation for the compass

and if anyone is wondering im building an autonumus quad rotor

by

|   December 30, 2009 at 1:40 PM

85958:
...and if anyone is wondering im building an autonumus quad rotor ...

Hi!

I am also building my own autonomous quad rotor, I would like to get in contact with you if you are interested to share few ideas...
my e-mail: buzzo182@hotmail.com

Let me know!