ESP-01/ESP8266 based multi-channel A/D Converter
In this article I will try to explain how to make a multichannel analog to digital converter with ADS1015 and well-known IoT modules ESP-01 and ESP8266. ADS1015 is a 12 bit I2C-compatible A/D converter which performs conversions at data rates up to 3300 samples per second. It has a build-in configurable programmable gain amplifier (PGA). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing precise large- and small-signal measurements. It can be configured to measure four single-ended or two differential inputs. There are ready to use libraries for these precision converters which speeds up coding on Arduino IDE environment. https://github.com/adafruit/Adafruit_ADS1X15 ADS1015 have one address pin, ADDR, that configures the I2C address of the device. This pin can be connected to GND, VDD, SDA, or SCL, allowing for four different addresses to be selected with one pin. ADDR pin Connection Slave Address GND 0x48 VDD ...