The 18bit ADC to work as a single ended A/D converter using the internal 2.048V reference voltage with the -V pins tied to ground.   A voltage divider extension board plug-in brings the input voltage range to a much more useful 0 – 5.06V. In this configuration the sample size is 17 bits for each channel.

IoT-Super-AD-DA can plug in B2/B+ for function board        

  IoT-Super-AD-DA Full function

  18bit ADC (4 channel x2 )8 channel

   16bit/12bit  ADC 4 channel  up to 8 channel

    8 bit ADC 8 channel, DAC 2 channel

    12bit DAC 1 channel , up to 2 channel    

 ADC  Application :  Soil Probe sensor  (  soil moisture sensor) 

  DC Voltage detect , Light detect , fire detect

   AC current detect 

  Soil Probe sensor  (  soil moisture sensor)

Work with IoT-Pi R1/R0 smarthome with below function example

(1)Enable 18bit 8 channel ADC control panel

(2) Enable 8bit 8 channel ADC &  2 channel DAC control panel

(3) Enable 16bit/12bit  4 channel ADC

Enable 12bit DAC up to 2 channel