Uploaded June 2023 | Updated September 2026, 28 minutes ago

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Offset as a function of temperature and temperature compensation …
↓↓↓ Complete description, time index and links below ↓↓↓

In the previous video we fumbled around with the automatic/periodic set of the AMR sensors’ magnetization and measured the (zero) offset of the AMR Wheatstone bridges (link below). Now it’s time to talk about temperature compensation.

We start out by measuring how temperature changes affect the Wheatstone bride offsets. Then I procrastinate a bit about the necessity of a compensation table. Finally we implement a temperature compensation using – of course – a table.

00:00 Intro – temperature compensation
01:08 Wheatstone bridge offset – as a function of temperature
13:15 Memory requirements – for storing an offset table
15:18 On the fly offset measurement – errors are too large
21:22 Temperature compensation – using a table
34:56 Wrap-up – next time we’ll calibrate the thing, bye

Tutorials youtube.com/playlist?list=PLwq-2MnM58FKn3920rc1V0qoTsQDheTIw
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Basics youtu.be/mlgslhsQ-L8
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (1) youtu.be/GlvbhHb22u4
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (2) youtu.be/k5PudDDylX4
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (3) youtu.be/4tchL8AY53A
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (4) youtu.be/fXAJN2KxfTQ
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (5) youtu.be/VBFjtTrTLc4
MEMSIC MMC5983MA 3-Axis Digital Compass & Arduino MCU – The Details (6) youtu.be/HEKQfgcHaXQ
My code drive.google.com/drive/folders/1Hnl73Uqurx6jYDBXG-mR7Cw46txKh9pC?usp=sharing

#arduino #compass #magnetometer #i2c #microcontroller #tutorials #tutorial #how-to #robertssmorgasbord