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Sensors SHT35, SHT31 and SHT30

Price: 7-17$


Library: arduino-sht (github)

Connect


Example scetch 
#include <Wire.h>

#include <SHTSensor.h>

SHTSensor sht;

void setup() {
  // put your setup code here, to run once:

  Wire.begin();
  Serial.begin(9600);
  delay(1000); // let serial console settle

  if (sht.init()) {
      Serial.print("Sensor Senserion SHT3X");
      Serial.print("\n\n");
  } else {
      Serial.print("init(): failed\n");
  }
  sht.setAccuracy(SHTSensor::SHT_ACCURACY_HIGH); // only supported by SHT3x

}

void loop() {
  // put your main code here, to run repeatedly:

  if (sht.readSample()) {
      Serial.print("  T:  ");
      Serial.print(sht.getTemperature(), 2);
      Serial.print("  ");
      Serial.print("  RH: ");
      Serial.print(sht.getHumidity(), 2);
      Serial.print("\n");
  } else {
      Serial.print("Error in readSample()\n");
  }

  delay(1000);
}

Test Results

Quick Room temperature overview

(single sensor connected. one by one)

SHT_ACCURACY_HIGH

SHT35 (1)SHT35 (2)SHT31 (1)SHT31 (2)SHT30 (1)SHT30 (2)


T: 26.71 RH: 28.11
T: 26.71 RH: 27.93
T: 26.71 RH: 27.74
T: 26.70 RH: 27.71
T: 26.74 RH: 27.59
T: 26.71 RH: 27.52
T: 26.71 RH: 27.53
T: 26.71 RH: 27.58
T: 26.74 RH: 27.62
T: 26.71 RH: 27.69
T: 26.73 RH: 27.76
T: 26.71 RH: 27.77
T: 26.74 RH: 27.77
T: 26.73 RH: 28.05
T: 26.73 RH: 28.32
T: 26.74 RH: 28.32
T: 26.70 RH: 28.07
T: 26.70 RH: 27.90
T: 26.71 RH: 27.71
T: 26.67 RH: 27.61
T: 26.68 RH: 27.57
T: 26.68 RH: 27.47
T: 26.71 RH: 27.49
T: 26.71 RH: 27.69
T: 26.70 RH: 27.93
T: 26.68 RH: 28.06
T: 26.71 RH: 28.32
T: 26.73 RH: 29.01
T: 26.70 RH: 29.68
T: 26.68 RH: 29.52
T: 26.67 RH: 29.10
T: 26.70 RH: 28.64



T: 26.92 RH: 27.30
T: 26.89 RH: 27.34
T: 26.89 RH: 27.41
T: 26.89 RH: 27.43
T: 26.89 RH: 27.95
T: 26.89 RH: 28.89
T: 26.87 RH: 29.58
T: 26.87 RH: 29.95
T: 26.86 RH: 30.06
T: 26.89 RH: 29.98
T: 26.86 RH: 29.82
T: 26.89 RH: 29.64
T: 26.87 RH: 29.24
T: 26.87 RH: 29.05
T: 26.87 RH: 28.78
T: 26.85 RH: 28.56
T: 26.85 RH: 28.24
T: 26.83 RH: 28.00
T: 26.82 RH: 27.74
T: 26.82 RH: 27.59
T: 26.82 RH: 27.52
T: 26.83 RH: 27.38
T: 26.83 RH: 27.38
T: 26.82 RH: 27.28
T: 26.81 RH: 27.22
T: 26.82 RH: 27.14
T: 26.81 RH: 27.18
T: 26.81 RH: 27.15
T: 26.81 RH: 27.11
T: 26.82 RH: 27.14
T: 26.82 RH: 27.36
T: 26.85 RH: 27.52


T: 26.89 RH: 31.81
T: 26.89 RH: 31.57
T: 26.90 RH: 31.43
T: 26.89 RH: 31.30
T: 26.90 RH: 31.34
T: 26.89 RH: 31.33
T: 26.89 RH: 31.22
T: 26.86 RH: 30.97
T: 26.89 RH: 30.76
T: 26.90 RH: 30.59
T: 26.89 RH: 30.36
T: 26.87 RH: 30.30
T: 26.87 RH: 30.18
T: 26.85 RH: 30.13
T: 26.86 RH: 30.08
T: 26.85 RH: 30.02
T: 26.86 RH: 29.98
T: 26.86 RH: 29.96
T: 26.85 RH: 29.95
T: 26.83 RH: 29.87
T: 26.83 RH: 29.90
T: 26.86 RH: 29.91
T: 26.83 RH: 29.93
T: 26.83 RH: 29.95
T: 26.83 RH: 29.87
T: 26.85 RH: 29.98
T: 26.82 RH: 30.00
T: 26.82 RH: 30.00
T: 26.82 RH: 30.00
T: 26.81 RH: 30.07
T: 26.81 RH: 30.30
T: 26.81 RH: 31.11


T: 26.77 RH: 31.09
T: 26.80 RH: 30.98
T: 26.79 RH: 30.80
T: 26.79 RH: 30.64
T: 26.77 RH: 30.50
T: 26.79 RH: 30.44
T: 26.79 RH: 30.40
T: 26.76 RH: 30.37
T: 26.80 RH: 30.32
T: 26.79 RH: 30.27
T: 26.77 RH: 30.27
T: 26.79 RH: 30.32
T: 26.76 RH: 30.20
T: 26.76 RH: 30.10
T: 26.79 RH: 29.96
T: 26.77 RH: 29.91
T: 26.77 RH: 29.92
T: 26.79 RH: 29.89
T: 26.76 RH: 29.92
T: 26.76 RH: 29.92
T: 26.77 RH: 29.93
T: 26.76 RH: 30.00
T: 26.77 RH: 29.99
T: 26.74 RH: 29.96
T: 26.74 RH: 29.90
T: 26.74 RH: 29.89
T: 26.74 RH: 29.86
T: 26.76 RH: 29.86
T: 26.76 RH: 29.86
T: 26.77 RH: 29.83
T: 26.74 RH: 29.89
T: 26.74 RH: 29.83


T: 27.01 RH: 32.36
T: 26.99 RH: 31.79
T: 26.99 RH: 31.22
T: 27.01 RH: 30.73
T: 26.96 RH: 30.30
T: 26.99 RH: 29.94
T: 26.99 RH: 29.66
T: 26.96 RH: 29.48
T: 26.98 RH: 29.26
T: 26.99 RH: 29.13
T: 26.99 RH: 29.14
T: 26.99 RH: 29.09
T: 26.96 RH: 28.91
T: 26.95 RH: 28.84
T: 26.95 RH: 28.80
T: 26.96 RH: 28.73
T: 26.95 RH: 28.64
T: 26.91 RH: 28.59
T: 26.92 RH: 28.62
T: 26.95 RH: 28.64
T: 26.93 RH: 28.64
T: 26.91 RH: 28.65
T: 26.93 RH: 28.70
T: 26.93 RH: 28.73
T: 26.92 RH: 28.69
T: 26.92 RH: 28.74
T: 26.93 RH: 28.70
T: 26.92 RH: 28.69
T: 26.92 RH: 28.73
T: 26.91 RH: 28.71
T: 26.88 RH: 28.72
T: 26.91 RH: 28.72


T: 26.90 RH: 31.81
T: 26.88 RH: 31.31
T: 26.90 RH: 30.94
T: 26.91 RH: 30.55
T: 26.90 RH: 30.23
T: 26.88 RH: 30.06
T: 26.90 RH: 29.82
T: 26.87 RH: 29.61
T: 26.90 RH: 29.35
T: 26.88 RH: 29.23
T: 26.88 RH: 29.26
T: 26.88 RH: 29.11
T: 26.87 RH: 28.96
T: 26.87 RH: 28.96
T: 26.85 RH: 28.90
T: 26.87 RH: 28.90
T: 26.85 RH: 28.93
T: 26.87 RH: 29.01
T: 26.84 RH: 29.02
T: 26.88 RH: 29.05
T: 26.84 RH: 29.09
T: 26.85 RH: 28.99
T: 26.83 RH: 28.93
T: 26.85 RH: 29.00
T: 26.84 RH: 28.97
T: 26.84 RH: 28.88
T: 26.83 RH: 28.93
T: 26.83 RH: 28.94
T: 26.81 RH: 28.97
T: 26.81 RH: 28.91
T: 26.81 RH: 29.00
T: 26.80 RH: 29.09



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