I have been working with the ACS712 current sensor for awhile now, and am getting awfully bizarre analog readings. On all pins that have zero voltage applied to them, I am getting a reading of 1780-1900. That is, the Photon is simply plugged into a breadboard and nothing else is wired to any of its pins.
Sample readings once a second:
1837 1817 1834 1820 1820 1812 1814 1835 1813 1812 1835 1835 1828 1804 1816
Based on those numbers, it’s reporting about 1.4-1.5VDC going into it. That can’t magically be happening…can it?