Hi Amit,Did you add pull up | Microcontroller › AVR › Need help for I2C/TWI article of engineers garage › Hi Amit,Did you add pull up June 30, 2012 at 12:47 am #8161 AmrithParticipant Hi Amit, Did you add pull up resistors on SDA & SCL Lines. For TWI/I2C communication, with out pull up resistors controller will not able communicate with the external component. Try to debug your code by manual method.
