The error says the device didn't ACK the address which indicates that there may be something wrong with the address or connection. Do you have a logic analyzer/scope to troubleshoot this? If not I suggest you try the TWI Scanner Example and see if you get it to find the address.
The error says the device didn't ACK the address which indicates that there may be something wrong with the address or connection. Do you have a logic analyzer/scope to troubleshoot this? If not I suggest you try the TWI Scanner Example and see if you get it to find the address.
