KNACRO 4-Channel 16Bit ADC with PGA for RPI Raspberry PI 16 Bits I2C ADS1115 Module ADC 4 Channel for Raspberry Pi 3/2 Model B/B+

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Feature

The ADS1115 are precision analog-to-digital converters (ADCs) with 16 bits of resolution offered in an ultra-small, an MSOP-10 package.
Data are transferred via an I2C-compatible serial interface, four I2C slave addresses can be selected, it operate from a single power supply at 3.3V.
It can be used to detect analog signal and convert it to digital signal.
You can attach a joy stick or other analog sensor such as NTC,temperature, dust sensor and so on.
Reference Address: http://wiki.52pi.com/index.php/RPI-ADS1115-ADC-Module_SKU:EP-0076.