February 28, 2011
about 4 years ago
Hi everyone, I’m trying to use one of these as part of my final year project at uni but I’m having some serious trouble getting it to behave properly. When I try to read the heading, the first byte only varies between 0 and D and the second byte is always FF. These values do not change in any meaningful way when I rotate the device to face in different directions.
As far as I can tell, I’m following the spec. sheet but so far, no joy. My signal sequence is:
Start, Address (42), Command (41), Stop, wait 6000us, Start, Address (43), read byte 1, read byte 2, Stop
Can anyone tell if I’m doing anything particularly stupid?
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