![]() The power source of 5V for the Arduino Nano board is through the USB connector and the. 5V: The 5V pin outputs 5v to the external components. So applying 5V logic can damage the board. Note: Arduino Nano 33 BLE Sense only supports 3.3V logic. ![]() SmsModem.println("AT CMGD=1,4") //Delete message from memory of modemÄ®lse if (incomingResponce. UART pins: D0(TX), D1(RX) Other pins: 3.3V: The 3.3V pin works as the output regulated voltage of 3.3V. Serial.println("Sending message.") //DebugÄelay(5000) //pause for network to send sms SmsModem.println((char)26) // CTRL Z (char for send message) SmsModem.print(message) //Print message to modem (All are digital pins) These pins are used to generate an 8-bit PWM (Pulse Width Modulation) signal. PWM Pins: Arduino Nano has 6 PWM pins, which are Pin3, 5, 6, 9, 10 and 11. These digital pins are used for interfacing third-party digital sensors and modules with Nano board. If (incomingResponce.indexOf('>') != -1) // Waiting ">" from modem for sending message Digital Pins: Arduino Nano has 14 digital pins starting from D0 to D13. If (incomingResponce.indexOf("MODEM:STARTUP") != -1) // Modem send this message if restarted String incomingResponce= smsModem.readString() // Read string from modem ![]() String phone_numb = "AT CMGS=\"" number "\"" //Phone number string format On Arduino boards, the main hardware serial port is used for programming and sending messages to the Arduino Serial Monitor. ![]() No, it is pin no.5, and that function "send_SMS(number,message_to_send)" not contains digitalWrite or anything related to physical pins ,but contains thihg related to SoftwareSerial - example smsModem.print(message) void send_SMS(String number, String message)
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