The problems is that when I connect the GSM shield from Arduino and Telefonico to the Arduino Mega my keypad doesn't respond.
The GSM Shield? you say that like there is just one. Guess again.
The problems is that when I connect the GSM shield from Arduino and Telefonico to the Arduino Mega my keypad doesn't respond.
The GSM Shield? you say that like there is just one. Guess again.