NANOwHC12TX

#include <SoftwareSerial.h>
#define pbPin 3
int pbState = 0;
SoftwareSerial HC12(10, 9); // RX on arduino connected to TX on HC12, TX on arduino connected to RX on HC12

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  HC12.begin(9600);
  pinMode(pbPin, INPUT_PULLUP);

}


void loop() { // run over and over

  pbState = digitalRead(pbPin);
  delay(10);
  pbState = digitalRead(pbPin);
  if (pbState == LOW) {
    HC12.write('x');
    Serial.println("x");
    delay(5000);
    HC12.write('v');
    Serial.println("v");
  }
}