adafruit/Adafruit-Raspberry-Pi-Python-Code — pull request #96 by daliaga86 (2014-09-15 21:13:45+00:00)
Title: Update Adafruit_ADS1x15.py

Line 293 take into account negative voltages for ads_1015. Current state only does that for ads_1115 even though 1015 is able to read differential voltages