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Forum: µC & Digital Electronics Does Raspberry cause magnetic disturbances HMC5883L


Author: k-str (Guest)
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Hello to all,
I'm new here und I have some problems to use a HMC5883L as a compass.
During maeasuerements I see that the raspberry interferes the magnetic 
field.
Has sombody experience in this problem? How far should th raspberry be 
away from the HMC5883L? And how can I avoid this poblem?
Thanks in advance.
Kurt

Author: stefan us (Guest)
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All electric devices cause magnetic interference. That's naturally.

Author: Kurt Struevy (k-str)
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Hello stefan us
Thank you very much for this answer. But how can I avoid from this 
problem?
How do you use this magnetometer as a compass if you have always 
interferences from other devices?

Author: Hp M (Guest)
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The coil of the DC-DC-converter propably emits dc and rf magnetic 
fields.

The casing of the USB-connectors is made of steel and possily disturbs 
the earth magnetich field.

Author: Kurt Struevy (k-str)
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Hello Hp M,
thanks for your answer,
What can I do in this case. What if I try to shield the RPI with some 
like a cache of iron?

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