Zephyr-Labs Tests the ESP8266 with ADS1015 ADC

Zephyr-Labs asks, “How accurate?” when connecting the ADS1015 ADC to the Feather HUZZAH with ESP8266 WiFi. I wanted to have a reliable way to measure the level/voltage of the battery attached to the feather. The popular guidance was to “keep the adc input voltage to no more than 1 volt,”...