Thanks for all the good advice.
I think I need to lean some vector math!
my next steps are:
Use Vec3.js to calibrate my mag sensor and surroundings.
by adding a hold down the button for 4 seconds to calibrate feature:
To calibrate rotate the puck in all directions while sampling the mag data at a high rate, save the min and max value of each x,y,z axis.
Press button to exit calibrate
Take the average of the min/max for x,y,z and store these as JSON to a file in flash mem.
Sample at a lower rate and subtract the average x,y,z from each reading
use vector maths to calculate which way up the puck is and any clockwise or anticlockwise rotation steps.
Then I need to work out how to send HID command via BT
I will post an update as soon as I have made progress or if I have more problems. With some debug output this time.
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