View source for Arduino Nano: PPT VOX

==Analog In==

 /*
     Detect A0
     Switch PTT D4
 */
 int State;
 int outPin=4;
 
 // the setup function runs once when you press reset or power the board
 void setup() {
   // initialize digital pin 4 as an output.
   pinMode(outPin, OUTPUT);
   Serial.begin(9600);
 }
 
 // the loop function runs over and over again forever
 void loop() {
   State=(analogRead(A0)+analogRead(A0)+analogRead(A0)+analogRead(A0))/4;
   // Serial.print(State);
   // Serial.print("\n");
   if( State<1000) digitalWrite(outPin, HIGH);
   else digitalWrite(outPin, LOW);
   delay(100);
 }

==Digital In==

 /*
   Rig PTT VOX
   Detect D4 dari Audio
   Output D5 ke Switch
 
   modified 2022 June 22
   by Onno W. Purbo
 */
 
 boolean State=LOW;
 int inPin=4;
 int outPin=5; 
 
 // the setup function runs once when you press reset or power the board
 void setup() {
   // initialize digital pin 5 as an output.
   pinMode(outPin, OUTPUT);
   pinMode(inPin, INPUT);
 }
 
 // the loop function runs over and over again forever
 void loop() {
   State=digitalRead(inPin);
   digitalWrite(outPin, !State);
   delay(10);
 }

==Alternatif Lain==


 /*
   Rig PTT VOX
   Detect D4 dari Audio
   Output D3 ke Switch
 
   modified 2021 Dec 3
   by Onno W. Purbo
  */
 
 int State=LOW;
 int inPin=4;
 int outPin=3; 
 
 // the setup function runs once when you press reset or power the board
 void setup() {
   // initialize digital pin 3 as an output.
   pinMode(outPin, OUTPUT);
   pinMode(inPin, INPUT);
 }
 
 // the loop function runs over and over again forever
 void loop() {
   State=digitalRead(inPin);
   if( State==1 )
      digitalWrite(outPin, LOW );
   else
      digitalWrite(outPin, HIGH );
   delay(10);
 }