> /*
> Cayenne TMP36 Example
> This sketch shows how to send temperature data to a TMP36 Sensor in the Cayenne Dashboard.
> The Cayenne Library is required to run this sketch. If you have not already done so you can install it from the Arduino IDE Library Manager.
> Steps:
> 1. In the Cayenne Dashboard add a new TMP36 widget.
> 2. Set the widget to Value Display.
> 3. Select Virtual Pins and a virtual pin number.
> 4. Set VIRTUAL_PIN to the pin number you selected.
> 5. Attach a TMP36 to an analog pin on your Arduino. Make sure to use an analog pin, not a digital pin.
> Schematic:
> [Ground] -- [TMP36] -- [5V]
> |
> Analog Pin
> 6. Set the tmpPin variable to match the pin used to connect the TMP36.
> 7. Set the voltage variable to match the voltage used to connect the TMP36.
> 8. Set the token variable to match the Arduino token from the Dashboard.
> 9. Compile and upload this sketch.
> 10. Once the Arduino connects to the Dashboard it should automatically update the TMP36 widget with data.
> */
> #define CAYENNE_PRINT Serial // Comment this out to disable prints and save space
> #include <CayenneTemperature.h>
> // If you're not using the Ethernet W5100 shield, change this to match your connection type. See Communications examples.
> #include <CayenneEthernet.h>
> // Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
> char token[] = "6tcjr4rk6u";
> // Virtual Pin of the TMP36 widget.
> #define VIRTUAL_PIN V1
> // Analog pin the TMP36 is connected to.
> const int tmpPin = 0;
> // Voltage to the TMP36. For 3v3 Arduinos use 3.3.
> const float voltage = 5.0;
> TMP36 tmpSensor(tmpPin, voltage);
> void setup()
> {
> Serial.begin(9600);
> Cayenne.begin(token);
> }
> void loop()
> {
> Cayenne.run();
> }
> // This function is called when the Cayenne widget requests data for the Virtual Pin.
> CAYENNE_OUT(VIRTUAL_PIN)
> {
> // This command writes the temperature in Celsius to the Virtual Pin.
> Cayenne.celsiusWrite(VIRTUAL_PIN, tmpSensor.getCelsius());
> // To send the temperature in Fahrenheit or Kelvin use the corresponding code below.
> //Cayenne.fahrenheitWrite(VIRTUAL_PIN, tmpSensor.getFahrenheit());
> //Cayenne.kelvinWrite(VIRTUAL_PIN, tmpSensor.getKelvin());
> }
I measure the voltage on the arduino, it’s 4,68 volts. I change 4,68 volts in the code but its the same problem …
I try also on the 3v pin but its the sam problem…
@rsiegel can you try and reproduce this issue when you have time? Add a TMP36 to Arduino using the Cayenne generated code. It’s odd because the serial monitor is showing the correct values but Cayenne is not…
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