WiFi Weather ClockWiFi Weather ClockProject Overview The WiFi Weather Clock: This project is made using the ESP32 and ST7789-LCD color screen, capable of displaying real-time time, weather, temperature and humidity, air quality index, wind speed, wind direction, etc. The center of the screen can also display an animation, and by long-pressing a button, different animation … Read more
ESP32 Gas Sensor Application Guide 1. Basic Principles and Selection Gas sensors operate by detecting electrochemical changes (such as resistance changes) caused by target gases. Common types include: MQ Series detects specific gases (such as smoke, liquefied gas) and outputs an analog voltage. Digital Sensors directly output I²C digital signals (such as BME680 for multi-parameter … Read more
Recently, after upgrading the ESP32 firmware to LVGL 9.2.2 + MicroPython 1.25, previously functioning code began to experience crashes and restarts. At this point, the following error message can be seen: A fatal error occurred. The crash dump printed below may be used to help determine what caused it. If you are not already running … Read more
In the era of the Internet of Things, more and more devices need to have AI capabilities, such as smart homes, wearable devices, and more. However, deploying complex AI models on resource-constrained micro devices has always been a challenge. Now, with ESP-TF Lite Micro, everything becomes easy and simple! This article will provide a detailed … Read more
The power optimization hardware design for the ESP32 is the cornerstone of achieving ultra-low power systems, requiring meticulous control over power architecture, peripheral circuits, PCB layout, and more. Below are hardware-level optimization solutions validated by engineering: 1. Power Topology Optimization 1. Efficient Power Conversion Solutions Scenario Recommended Solution Static Current Conversion Efficiency Key Models Input … Read more
DIY Smart Environmental Monitoring! Build a High-Precision Temperature and Humidity Sensor with ESP32 Say goodbye to stuffiness and dampness, easily build your own environmental monitoring system In modern smart home systems, temperature and humidity monitoring is an essential basic function. Today, I will teach you how to use the powerful ESP32 development board, paired with … Read more
Why Do Devices Need Accurate Time? The importance of time synchronization in the IoT ecosystem is self-evident: • Data Timestamping Guarantee: Sensor data must have accurate timestamps for correct analysis and processing. • Security Authentication Mechanisms: Security mechanisms such as TLS certificate validation and JWT tokens rely on accurate time. • Logging and Debugging: Accurate … Read more
In addition to its powerful serial communication interfaces (UART, SPI, I²C, I²S) and wireless connectivity (Wi-Fi, Bluetooth), the ESP32 integrates many special function interfaces and peripherals, making it excel in scenarios such as IoT, sensor nodes, human-computer interaction, and motor control. Here are some key special function interfaces of the ESP32: 1. Analog-to-Digital Converter (ADC) … Read more
Introduction The ESP32 is a powerful microcontroller with Wi-Fi and Bluetooth capabilities, widely used in IoT and embedded systems. Within the ESP32 ecosystem, the MJPEG multi-client streaming server is a significant feature that meets the demand for multiple clients to access video streams simultaneously. This article will introduce the ESP32 MJPEG multi-client streaming server based … Read more
Recently, I discovered a strange and interesting issue. It became even more intriguing when intertwined with other related problems. Many development boards or small modules that require USB serial connections often use the CH340g chip from Nanjing Qinheng, so the driver is either automatically installed by Windows or downloaded from the official website as CH341SER.EXE. … Read more