#define in1 A0 #define out1 6 float temp1, lectura1; String estado; void setup() { // put your setup code here, to run once: Serial.begin(9600); pinMode(in1, INPUT); } void loop() { // put your main code here, to run repeatedly: lectura1 = analogRead(in1); temp1 = (lectura1 * 5000 / 1023 / 10) - 40; Serial.print(temp1); if(Serial.available()>0){ estado = Serial.readString(); if(estado == "on"){ digitalWrite(out1, HIGH); } else if(estado == "off"){ digitalWrite(out1, LOW); } } delay(800); }