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Just a future consideration for the shield. Utilize the IOREF/AREF pins to make the shield compatible with our 3.3V boards:
Currently, the windvane direction is pulled up to 5V. This causes issues when a 3.3V ADC tries to read that pin (reading is maxed out). (*I didn't look into the annemometer and rain gauge pins, but I assume that utilizing IOREF would be optimal for those pins as well.)
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