Comments on: HMC5843 Magnetometer Library for Arduino

By: Trójosiowy czujnik pola magnetycznego HMC5843 – Arduino | YWD - blog

Trójosiowy czujnik pola magnetycznego HMC5843 – Arduino | YWD - blog — Thu, 10 May 2012 06:54:07 +0000

[...] A pod tym adresem znajdziecie bibliotekę i przykłady wykorzystania z Arduino – LINK [...]

By: FukKuen

FukKuen — Thu, 06 Oct 2011 22:19:53 +0000

I have brought the sensors 2 month ago but still not yet get the correct readings…
After I have read the comments I have brought a capacitor (100uF, 16V), but i dont know how to connect that to the circuit (in parallel). could anybody describe it in detail or show me a photo?

By: Anonymous

Anonymous — Sat, 16 Jul 2011 21:51:07 +0000

I need the same how can I get an angel?

By: ali

ali — Fri, 15 Jul 2011 19:39:58 +0000

hello
i bought hmc5843 and i could get data from it but i dont know how i can change these data to gauss and the most important i dont know how i can change the output to the angels

By: Nintendo DS Touch Screen and breakout board | inmotion.pt

Nintendo DS Touch Screen and breakout board | inmotion.pt — Tue, 21 Jun 2011 23:29:13 +0000

[...] on-board regulator, so a regulated voltage of 2.5-3.3VDC should be supplied. Check out this Arduino library and this tutorial on verifying the accuracy of its [...]

By: Luís Mauro

Luís Mauro — Thu, 06 Jan 2011 20:40:20 +0000

Hello

I´m having another BAD experience with a DIYdrones board.

If it´s possible, please take a look at this forum:
http://diydrones.com/forum/topics/hmc5843-3-axis-magnetometer?commentId=705844:Comment:248254

If you have any idea about what is going wrong, I appreciate very much!!

Thank you

Luís

By: Frank

Frank — Thu, 06 Jan 2011 03:11:22 +0000

I tried just using Wire library on HMC5883L. It works fine. So I believe that Wire library should also works fine for HMC5843. HMC5843 and HMC5883L are very similar.
please see the complete code below:

#include
void setup()
{
initHMC5883L();
}
void loop()
{
readxyz();
}
void initHMC5883L()
{
Wire.beginTransmission(0x1E);// 7 bits address //0x3C //datasheet page 17
Wire.send(0×02);
Wire.send(0×00); // continues reading
Wire.endTransmission();
}

void readxyz()
{
Wire.beginTransmission(0x1E);
Wire.send(0×03);
Wire.endTransmission();

Wire.requestFrom(0x1E, 6);
if(6 <= Wire.available())
{
int x,y,z;
x = Wire.receive() << 8;
x |= Wire.receive();
y = Wire.receive() << 8;
y |= Wire.receive();
z = Wire.receive() << 8;
z |= Wire.receive();
}
}

By: austiey

austiey — Thu, 09 Dec 2010 18:44:14 +0000

I’m having the same problem. Martin: Have you figured out a solution yet?

By: Fabio Varesano

Fabio Varesano — Wed, 01 Dec 2010 12:31:15 +0000

I just completed porting the HMC5843 Arduino library, originally created by Nirav Patel (see above) and then extended/improved by E.J.Muller (http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1274748346/0#0), to use only the Arduino Wire library to use the I2C bus.

If this interests you, you’ll find it at http://www.varesano.net/blog/fabio/hmc5843-magnetometer-library-arduino-based-wire

By: nrp

nrp — Sun, 14 Nov 2010 06:00:56 +0000

Those values are a possible symptom of the capacitor issue, but could be something else. I recommend trying the capacitor fix if at all possible.