Signal temp do Palio

[Deriel_Silva]

Good evening, could anyone help me with a car temperature sensor, I’m getting a signal via wire for realdashe and I got the signal from the temperature wire on the sensor panel, could anyone give me a tip if I need to make a signal splitter or some help? in the Arduino code so that realdashe recognizes it?

[escar]

don’t know what’s your code but signal to A0 GND to GND of arduino 10KΩ resistor between GND and pin A0 and XML file to send the frame value to realdash

[Deriel_Silva]

I have these two models of NTC sensor and I am having difficulty creating a signal divider for my Arduino so that it can be recognized in realdash and could someone help me with some assistance, I would be very grateful

[escar]

parts number and arduino code well try to help you

[Deriel_Silva]

sensors are 3071 and 3041

int ThermistorPin = A1;
int Vo;
float R1 = 100000;
float logR2, R2, T;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

void setup() {
Serial.begin(9600);
}

void loop() {

Vo = analogRead(ThermistorPin);
R2 = R1 * (1023.0 / (float)Vo - 1.0);
logR2 = log(R2);
T = (1.0 / (c1 + c2logR2 + c3logR2logR2logR2));
T = T - 273.15;

Serial.print("Temperature: ");
Serial.print(T);
Serial.println(“c”);

delay(100);
}

[escar]

ok just wirth the name of the sensors model

[escar]

const int sensorPin1 = A0; // Pin for the first sensor
const int sensorPin2 = A1; // Pin for the second sensor

void setup() {
  Serial.begin(9600); // Start serial communication
}

void loop() {
  int sensorValue1 = analogRead(sensorPin1); // Read value from the first sensor
  int sensorValue2 = analogRead(sensorPin2); // Read value from the second sensor

  float temperature1 = calculateTemperature(sensorValue1); // Calculate temperature from the first sensor
  float temperature2 = calculateTemperature(sensorValue2); // Calculate temperature from the second sensor

  Serial.print("Temperature 1: ");
  Serial.print(temperature1);
  Serial.println(" °C");

  Serial.print("Temperature 2: ");
  Serial.print(temperature2);
  Serial.println(" °C");

  delay(1000); // Delay of one second
}

float calculateTemperature(int sensorValue) {
  // Add the formula to calculate the temperature from the sensor's analog value
  // For example, if you have a formula that fits your sensor:
  float resistance = (1023.0 / sensorValue) - 1.0;
  resistance = 10000.0 / resistance; // Assuming a 10k ohm resistor

  float temperature = 1.0 / (log(resistance / 10000.0) / 3950.0 + 1.0 / 298.15) - 273.15; 
  return temperature;
}

edit the frames in the code & xml

[escar]

or your code

int ThermistorPin1 = A0; // Pin for the first sensor
int ThermistorPin2 = A1; // Pin for the second sensor
int Vo1, Vo2;
float R1 = 100000;
float logR2, R2, T1, T2;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

void setup() {
  Serial.begin(9600); // Start serial communication
}

void loop() {
  Vo1 = analogRead(ThermistorPin1); // Read value from the first sensor
  Vo2 = analogRead(ThermistorPin2); // Read value from the second sensor

  R2 = R1 * (1023.0 / (float)Vo1 - 1.0); // Calculate resistance for the first sensor
  logR2 = log(R2);
  T1 = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2 * logR2));
  T1 = T1 - 273.15; // Convert from Kelvin to Celsius

  R2 = R1 * (1023.0 / (float)Vo2 - 1.0); // Calculate resistance for the second sensor
  logR2 = log(R2);
  T2 = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2 * logR2));
  T2 = T2 - 273.15; // Convert from Kelvin to Celsius

  Serial.print("Temperature 1: ");
  Serial.print(T1);
  Serial.println(" °C");

  Serial.print("Temperature 2: ");
  Serial.print(T2);
  Serial.println(" °C");

  sendCANFrameToRealDash(3071, T1); // Send CAN frame for the first sensor
  sendCANFrameToRealDash(3041, T2); // Send CAN frame for the second sensor

  delay(1000); // Delay of one second
}

void sendCANFrameToRealDash(unsigned long canFrameId, float temperature) {
  byte frameData[8];
  memset(frameData, 0, sizeof(frameData));
  int tempInt = (int)(temperature * 100); // Multiply by 100 to keep two decimal places

  frameData[0] = (tempInt >> 8) & 0xFF;
  frameData[1] = tempInt & 0xFF;

  Serial.write(0x44);
  Serial.write(0x33);
  Serial.write(0x22);
  Serial.write(0x11);
  Serial.write((byte*)&canFrameId, 4);
  Serial.write(frameData, 8);
}

[Deriel_Silva]

My friend, thank you very much, I was able to use your code to recognize it in realdash, and I made some changes and it worked, now it’s marked, thank you very much