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4. Interface functions
J1: used to connect Arduino IIC Interface as Grove - I2C ADC output interface.
J2: used to connect analog sensor as Grove - I2C ADC input interface.
U1: ADC121C021 IC, 12-Bit Analog-to-Digital Converter
The black line area is used to set the IIC address. ADDR0 and ADDR1 are shipped connected to L. You can
change them to "H" or floating by a little modification on the board (floating is neither connecting "H" nor
connecting "L"). Find details in the Reference.
5
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