DEVMO PCF8591 AD-DA Converter Module Analog to Digital Conversion Compatible with Arduino Raspberry Pi

Three module interface description The left and right side of the module, respectively, outside the expansion of 2-pin connector, respectively, as follows: Left AOUT chip DA output interface AINO chip analog input interface 0 AIN1 chip analog input interface 1 AIN2 chip analog input interface 2 AIN3 chip analog input interface 3 SCL IIC clock interface on the right then single-chip IO port SDA IIC digital interface connected MCU IO port GND module to ground VCC power interface external 3.3v-5v Four modules red short-circuit cap instructions Module a total of three red short-circuit cap, respectively, as follows: P4 connected to P4 short-circuit cap, select the thermistor access circuit P5 connected to P5 short-circuit cap, select the photosensitive resistor access circuit P6 connected to P6 short-circuit cap, select 0-5V adjustable voltage access circuit