However, it always shows "Celsius temperature: -127.00 - Fahrenheit temperature: -196.60" . I have tried an ESP32 and still have the same problem. I have also switched from normal to parasite mode. The values do not change when I heat the sensor with my hand.
Please show a schematic of the circuit of your setup and include a clear photograph of the system as you've built it. Please also share the code you're using to read out the sensor.
/*********
Rui Santos
Complete project details at http://randomnerdtutorials.com
Based on the Dallas Temperature Library example
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#include <OneWire.h>
#include <DallasTemperature.h>
// Data wire is conntec to the Arduino digital pin 4
#define ONE_WIRE_BUS 7
// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature sensor
DallasTemperature sensors(&oneWire);
void setup(void)
{
// Start serial communication for debugging purposes
Serial.begin(9600);
// Start up the library
sensors.begin();
}
void loop(void){
// Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
sensors.requestTemperatures();
Serial.print("Celsius temperature: ");
// Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
Serial.print(sensors.getTempCByIndex(0));
Serial.print(" - Fahrenheit temperature: ");
Serial.println(sensors.getTempFByIndex(0));
delay(1000);
}
Looks like you've got both VCC and GND of the sensor connected to GND on the breadboard. Try powering the sensor with 5V, and verify you've correctly interpreted the wire colors of your sensor.
