2. HX711Arduino library for HX711 24 bit ADC used for load cells and scales.
4. ADS1X15Arduino library for ADS1015 = I2C 12 bit ADC and ADS1115 = I2C 16 bit ADC
5. ACS712Arduino library for ACS Current Sensor - 5A, 20A, 30A
6. PCF8574Arduino library for PCF8574 - I2C IO expander
7. SHT31Arduino library for the SHT31 temperature and humidity sensor
8. RunningAverageArduino library to calculate the running average by means of a circular buffer.