I've been running the test code for the SHT20 sensor on my UNO R3. The code I am running is the one included in the DFR_SHT20_master Library. When I upload the test code it writes the phrase "SHT20 example" as expected but then it does not output anything further, just stays blank after "SHT20 example". So far I've tried checking my com port to see if it is correct, pressing the refresh button , and applying a 330 ohm pull-up resistor to the clock and connection mode. I am able to get a reading when I unplug the data and connection mode but it says that the temperature is 998 degrees c and humidity is 998%.
Does this mean that my sensor is broken and in need of replacement or is my implementation simply wrong?
Below is the test code and attachments are the schematic of how I attached the wires of the sensor, the odd serial monitor output, and the expected output of the serial monitor when thing are working as they are supposed to.
/*!
* @file DFRobot_SHT20_test.ino
* @brief DFRobot's SHT20 Humidity And Temperature Sensor Module
* @n This example demonstrates how to read the user registers to display resolution and other settings.
* Uses the SHT20 library to display the current humidity and temperature.
* Open serial monitor at 9600 baud to see readings.
* Errors 998 if not sensor is detected. Error 999 if CRC is bad.
* Hardware Connections:
* -VCC = 3.3V
* -GND = GND
* -SDA = A4 (use inline 330 ohm resistor if your board is 5V)
* -SCL = A5 (use inline 330 ohm resistor if your board is 5V)
*/
#include <Wire.h>
#include <DFRobot_SHT20.h>
DFRobot_SHT20 sht20;
void setup()
{
Serial.begin(9600);
Serial.println("SHT20 Example!");
sht20.initSHT20(); // Init SHT20 Sensor
delay(10000);
sht20.checkSHT20(); // Check SHT20 Sensor
}
void loop()
{
float humd = sht20.readHumidity(); // Read Humidity
float temp = sht20.readTemperature(); // Read Temperature
Serial.print("Time:");
Serial.print(millis());
Serial.print(" Temperature:");
Serial.print(temp, 1);
Serial.print("C");
Serial.print(" Humidity:");
Serial.print(humd, 1);
Serial.print("%");
Serial.println();
delay(1000);
}
