Comments: HMC6343 3-axis Compass Hookup Guide
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Very surprised you are still selling this without the DRDY connection broken out. I discussed this with you years ago and you were going to fix it. Synchronising data reads using DRDY is ESSENTIAL for reliable functioning of this device. Otherwise it will mysterious randomly hang and cause hours of frustration. I use HMC6343 in airborne (gliding) applications and it remains an excellent, reliable, fast, turnkey mobile compass solution, but ONLY if you use DRDY! NB. running calibration is essential in most real work applications if there is a sniff of steel nearby.