DHT11 is a low-cost temperature and humidity sensor that uses a moisture-sensitive resistor to measure humidity, employs a digital temperature sensor for temperature testing, and processes the data using a microcontroller with serial output. The DHT11 costs about 4 yuan, though it is not aesthetically pleasing. The DHT22 is priced around 15 yuan, and while … Read more
With the rise of maker culture and geeks, using Arduino and various electronic modules to create interesting projects has become increasingly popular. Today, let’s create a temperature detection project and experience the joy of creation. Principle of Arduino Temperature Detection The basic principle of Arduino temperature detection is to use a temperature sensor to obtain … Read more
MLX90614 is a digital infrared temperature sensor developed and produced by Melexis. It can measure the surface temperature of an object without contact, achieving temperature measurement by measuring infrared radiation, making it very suitable for applications that require avoiding contact with the target object or need to measure temperature in high-temperature environments. Here are some … Read more
Click on the arrow and the “blue text” to follow us! Sensor 2 – LM35D Temperature Sensor 1. Physical Diagram of the Sensor Physical Diagram 1 Introduction: LM35 is a temperature sensor produced by National Semiconductor, with an output voltage based on the Celsius scale. LM35 is a widely used temperature sensor. Due to its … Read more
Implementing DHT11 Temperature Sensor Parameters with C# on ESP32 Microcontroller[1] Welcome to C# enthusiasts, in this article we will use the C# nanoframework to develop a program to read temperature and humidity from the DHT11 sensor on the ESP32 microcontroller. To implement this, we need to prepare and configure the environment for ESP32. You can … Read more
The temperature and humidity sensors come in various models, such as DHT11 and HTU21D. However, due to parameters such as accuracy and sensitivity, they are not suitable for industrial-grade temperature and humidity monitoring. Their accuracy and sensitivity are both poor. Therefore, in this article, we will use the SHT31 temperature/humidity sensor. They are the best … Read more
Overview Previously, I wrote a tutorial on building a temperature and humidity monitor with 20 lines of code, and I also promised to write a tutorial without any coding. After a long delay, I finally finished it. Some content is excerpted from the Baidu Cloud IoT Platform documentation. Development Board NodeMCU is an open-source development … Read more
Temperature is a physical quantity that we often encounter and can intuitively feel, such as needing to add clothing when the weather gets cooler or blowing on food that is too hot. It is also necessary to measure temperature accurately, for example, the normal body temperature of humans is 37.5℃, and the boiling point of … Read more
Experimental components include: LED, switch and temperature and humidity sensor. 1. Connection of LED LED (Light Emitting Diode) is a solid-state semiconductor device that can convert electrical energy into visible light. It directly converts electricity into light. The core of the LED is a semiconductor chip, one end of which is attached to a bracket, … Read more