Sending sensor data to RX output using Software Serial.

SensorsTX.cpp

#include <arduino.h>
#include <SoftwareSerial.h>

#define TEMP_PIN A0
float temp;
SoftwareSerial mySerial(D6, D7); // RX, TX

void setup() {
    Serial.begin(115200); // tty.wchusbserial14130
    mySerial.begin(4800); // tty.wchusbserial14110
}

void loop() {
    temp = analogRead(TEMP_PIN);
    temp = temp * (3*100)/1024; // (Voltage*100)/1024
    Serial.print("TEMPERATURE = ");
    Serial.print(temp);
    Serial.println(" C");
    mySerial.println(temp);
    delay(1000);
}