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DHT22 temperature sensor tutorial:
Project 1: Environmental Monitoring System Based on OBLOQ-IoT Module
This product is mainly applied in electronic laboratory to monitor and control indicators such as temperature, humidity, light and dust, and timely upload them to the cloud data space to achieve remote monitoring and control of dehumidifier, air purifier, exhaust fan and dimmable light, etc. in the laboratory.
Hardware List:
DFRduino UNO R3 - Arduino Compatible
Gravity: UART OBLOQ – IOT Module (Microsoft Azure)
DHT22 Temperature and Humidity Sensor
Sharp GP2Y1010AU0F Compact optical Dust Sensor
Gravity: i2C BMP280 Barometer Sensor
Gravity: Analog Ambient Light Sensor For Arduino
LCD12864 Shield for Arduino
Quadruple relay module
| Infrared Thermometer Module | Gravity:SHT1x Humidity and Temperature Sensor | DHT22 Temperature and Humidity Sensor | |||
| SKU | SEN0206 | SEN0093 | DFR0066 | DFR0067 | SEN0137 |
| Operating Voltage | 3.3V~5V | 3V~5V | 3.3V~5V | 3.3V~5V | +5V |
| Operating Current | 1.2mA | 4mA~9mA | 2μA | 0.5mA~2.5mA | 1.5mA |
| Operating Temperature | -40℃～125 ℃ | -10℃~50℃ | -40℃~128.8℃ | 0℃～50℃ | -20℃-80℃ |
| Range of temperature measurement | -70.01℃～382.19℃ | -33℃～220℃ | -40℃~128.8℃ | 0℃～50℃ | -40℃-80℃ |
| Precision of temperature measurement | 0.5℃ | 2℃(full range) | 0.5℃ | 2℃ | |
| Temperature deviation | ±0.5℃ | ±0.6℃ | ±0.4°C | ±0.1℃ | ±0.5℃ |
| Dimension | 31.5*18(mm) | 12*13.7*35(mm) | 32*27(mm) | 22*32(mm) | 22*32(mm) |
| Interface | Gravity-I2C | Digitalx3 | Gravity-2-wire digital | Gravity-digital | Gravity-digital |
| Data type | Digit | Digit | Digit (unibus) | Digit (unibus) | Digit (unibus) |
| Range of humidity measurement | NA | NA | 0-100%RH | 20-90%RH | 0-100%RH |
| Humidity deviation | NA | NA | ±4.5%RH | ±5%RH | ±2%RH |
| Price | $16.00 | $49.00 | $21.05 | $5.20 | $9.50 |
| Brief introduction |
non-contact measurement uses infra-red radiation to measure the temperature and does not require a direct touch. Additionally, this method of measurement can be read quickly and accurately. This module has a FOV of 35° Wave length 5.5um-14um Application: Environmental monitor Home automation Automobile electronics Airline industry Military |
It is a long distance thermometer specially designed for a high sensitivity, high accuracy, low noise and low power consumption. Wave length:5um-14um This module has a FOV of 26.6°x 2 = 53.2° Application: Medical equipment Fire alarm systems telecommunications |
It consists of 1 capacitive humidity module and 1 energy gap temperature module, perfect integration of 1 14bit A/D converter and 1 2-wire digital interface. CMOSens technology makes it of advantages such as low power consumption, fast response, strong anti-jamming capacity etc. Application: Medical equipment HVAC Meteorology Humidity regulator Dehumidifier Tests and measurements Automobile Automatically control |
This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality, fast response, anti-interference ability and high cost performance advantages. Its signal transmission distance up to 20 meters. These features make it a variety of applications and even the most demanding applications. Application: |
It contains a resistive element and a sense of wet NTC temperature module. Compared to DHT11, it has smaller humidity deviation, faster response, stronger anti-interference ability and higher cost performance Application: Medical equipment HVAC Meteorology Humidity regulator Dehumidifier Tests and measurements |
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