CODE:
github.com/pon...
ARDUINO GAUSS METER PROTOTYPE:
A Velleman vma313 magnetic switch/sensor (www.velleman.e...) with a 30 Gauss activation sensitivity was used to very roughly calibrate an a1302 Hall effect magnetic field sensor (www.amazon.ca/.... Using this setup I was able to compare various magnetic fields. The code is provided above, but it is in a prototyped stage and still fully reflects the development process (i.e. it is based on a "Hello World" template for ssd1306 I2C OLED display, no information about me other than vestigial display commands, etc.).