This is a software i2c sniffer for Arduino Nano and compatible (Atmega328) boards. Connection setup:
SCL --> D2
SDA --> D3
The Samples will be stored in internal memory and then printed on serial console Sample output (ES9028 Control Unit):
90+ 40+ 91+ A1-
90+ 42+ 91+ A6-
90+ 43+ 91+ E6-
90+ 44+ 91+ 1C-
90+ 45+ 91+ 00-
90+ 64+ 91+ 02-