Geeetech

Last week I received the magnetometer, I tried but NOT working.

I followed the https://www.loveelectronics.co.uk/Tutor ... no-library without any luck.

I did a try adding "two 'pull-up' resistors to enable I2C. For this, connect two 4.7k or 10k resistors between SDA and VCC, and SCL and VCC." without any luck.

The default program from (HMC5883L.h) is not working since the data output is helded (is displaying the same data always)

**************************************************
Starting the I2C interface.
Constructing new HMC5883L
Setting scale to +/- 1.3 Ga
Entered scale was not valid, valid gauss values are: 0.88, 1.3, 1.9, 2.5, 4.0, 4.7, 5.6, 8.1
Setting measurement mode to continous.
Entered scale was not valid, valid gauss values are: 0.88, 1.3, 1.9, 2.5, 4.0, 4.7, 5.6, 8.1
Raw: 720 1574 727 Scaled: 662.40 1448.08 668.84 Heading: 1.19 Radians 68.04 Degrees
Raw: 720 1574 727 Scaled: 662.40 1448.08 668.84 Heading: 1.19 Radians 68.04 Degrees
(.....)
Raw: 720 1574 727 Scaled: 662.40 1448.08 668.84 Heading: 1.19 Radians 68.04 Degrees
**************************************************

The sensor seems not to be working, apparently we're under a bad board. I ran a IC2 test and I was not able to detect any device attached.

Dear hernan.gc ,
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Hi friend;
I've tested the HMC5883L using loveelectronics library,it works well.
SDA-->A4
SCL-->A5

But when I connected SDA to A5, SCL to A4, I got the same result as you.
I suggest you checking your wring again.

Best regards,
Jack

I can confirm now that the wiring is correct, SDA-->A4; SCL-->A5. Since it's a signal wire, I ran the program with both configurations
(just to confirm that is not a an incorrect PCB naming).

There is a guy on a forum http://dsscircuits.com/articles/the-mys ... 5883l.html, saying that on some HMC5883L lots the interruption is 1E instead of 1C (declared on the library) on IC2 "#define HMC5883L_Address 0x1C" even that, the sensor is still without working-

I ran an IC2 scanner, and is not able to recognize the setup.

btw, I'm buying a new sensor, :S

I have the same problem that you have. The readings are not changing as I change the board direction.

In my case I2C address is 1E. I am not using the two pull up resistors, but as I am able to change the configuration registers, I assume that I2C is working fine, and the problem has to do with the sensor itself.