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The DHT20 temperature & humidity sensor is the newly upgraded version of the DHT11. Data accuracy, stability, response speed, measurement range are greatly improved up.
DHT20 is a brand new ASIC dedicated chip, an improved MEMS semiconductor capacitive humidity sensor element and a standard on-chip temperature element. All sensors are factory calibrated and characterized by low power, high precision & stability, fast response, and strong anti-interference. Moreover, the DHT20 performance parameters of accuracy, power supply voltage, measurement range and response time have been enhanced greatly over the previous generation, making it more cost-effective.
Besides that, the DHT20 temperature & humidity sensor employs I2C digital output protocol, which is very suitable for HVAC, automobiles, data loggers, weather stations, home appliances, and other related temperature and humidity detection and controlled areas.
Application
| Gravity: DHT11 Temperature & Humidity Sensor | Gravity: DHT22 Temperature & Humidity Sensor | Gravity: DHT20 Temperature & Humidity Sensor | |
| SKU | DFR0067 | SEN0137 | SEN0497 |
| Communication Method | One wire | One wire | I2C |
| Operating Voltage | 3.3-5V | 5V | 3.3-5V |
| Temperature range ± error | 0~+50 ± 2 ℃ | -40~+80 ± 0.5℃ | -40~+80 ± 0.5℃ |
| Humidity range ± error | 20~90% ± 5%RH | 0~100% ± 2%RH | 0~100% ± 3%RH |
| Introduction | Classic temperature and humidity sensor, low price, suitable for designs with low accuracy requirements | High-precision temperature and humidity sensor, high price, high detection range and accuracy | High-precision temperature and humidity sensor, DHT11 upgrade version, the same price but improved performance, using I2C communication, data is more stable |
Project: Making a Desktop Geiger Counter with Unihiker --- Real-Time Nuclear Radiation Monitoring
Introduction: I had the idea to use a Unihiker to make a desktop Geiger counter. Basically, it's a device to detects the intensity of ionizing radiation. A typical Geiger counter has a sealed inflated tube and display that counts detected particles over time. I'll share how I DIY'ed the Geiger counter, to help with checking radiation levels in daily life.
