SEN0227

SHT20 I2C Temperature %26 Humidity Sensor Waterproof Probe SKU SEN0227 Introduction This is a SHT20 I2C temperature & humidity sensor with waterproof probe. It comes with the 4C CMOSens® SHT20 temperature & humidity sensor chip, and the probe has gone through dual waterproof protection. The SHT20 I2C temperature & humidity sensor adopt Sensirion new technique. Besides the capacitive type humidity sensor and the band gap temperature sensor, the chip contains an amplifier, A/D converter, OTP memory and a digital processing unit. To compare with early SHT1x series and SHT7x series, SHT20 shows better reliability and long-term stability. It can measure surrounding environment temperature and relative air humidity precisely. The Arduino SHT20 waterproof temperature & humidity sensor adopts dual waterproof protection. The inner PCB has perfusion and encapsulation protection, and the probe enclosure is made of PE waterproof materials. This is a special waterproof breathable material that allows water molecules to seep in, blocking water droplets from seeping in. The sensor won't be damaged even if it is submerged in water for a long time. There is a built-in 10k Pullup resistor and 0.1uf filter capacitor, so It can be used directly with the microcontroller such as Arduino. Recommend DFRobot Gravity 4Pin Sensor Adapter, it is quite convenient.’ Specification • Operating Voltage: 3.3V/5V • Communication Interface: I2C / IIC • Protection Class: waterproof anti-condensation • RH Response Time: 8s (tau63%) • Accuracy: ±3% RH / ±0.3 ℃ • Measuring Range: 0-100% RH / -40-125 ℃ • Dimension: 73mm * 17mm / 2.87 * 0.67 inches • Weight: 44g Board Overview Num Label Description 1 Red VCC 2 Green GND 3 Black (Blue) SDA 4 White (Yellow) SCL Tutorial In this section, we'll use Arduino to drive SHT20 I2C Temperature & Humidity Sensor (Waterproof Probe) Requirements • • Hardware o DFRduino UNO (or similar) x 1 o SHT20 I2C Temperature & Humidity Sensor o M-M/F-M/F-F Jumper wires Software o Arduino IDE, [https://www.arduino.cc/en/Main/Software| Click to Download Arduino IDE from Arduino®] Connection Diagram Sample Code Download the DFRobot Arduino SHT20 library How to install Libraries in Arduino IDE /*! * @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 #include "DFRobot_SHT20.h" DFRobot_SHT20 sht20; void setup() { Serial.begin(9600); Serial.println("SHT20 Example!"); sht20.initSHT20(); delay(100); sht20.checkSHT20(); } void loop() { float humd = sht20.readHumidity(); float temp = sht20.readTemperature(); 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); } // Init SHT20 Sensor // Check SHT20 Sensor // Read Humidity // Read Temperature Expected Results FAQ Q1. How to measure the soil moisture?. ** A.** Soil moisture is defined as: Get 1 kg soil samples, thoroughly dry it, the ratio between reduced weight (water weight) and 1 kg weight is soil moisture. It totally different to the air humidity. For any questions, advice or cool ideas to share, please visit the DFRobot Forum. https://wiki.dfrobot.com/SHT20_I2C_Temperature_%26_Humidity_Sensor__Waterproof_Probe__SKU__SEN0227/12-10-20