The power design and power management of the ESP32 are core aspects of IoT device development, directly affecting system stability, battery life, and thermal design. Below are detailed power supply solutions and power management strategies: 1. ESP32 Power Supply Requirements Voltage Range Recommended Voltage: 3.3V (Absolute maximum range: 2.3V~3.6V) Do not connect directly to 5V; … Read more
![[Open Source] AI Hardware Marvel! Build Your Own Voice Assistant with ESP32 to Control Everything with a Single Sentence](https://boardor.com/wp-content/uploads/2025/10/766bf1bb-f180-4deb-bbb7-29a2d9ab0973.jpg)
Project Overview The XiaoZhi ESP32 is an open-source ESP32 project initiated by Xia Ge, released under the MIT license, allowing anyone to use it for free or for commercial purposes. It is an AI chatbot based on the MCP (Model Control Protocol), designed to help everyone understand AI hardware development and apply the rapidly evolving … Read more
⚔️First, let’s see the effect (Serial Print) ⚔️Principle (from AI) ⚔️Hardware Preparation Connect the ESP32’s touch pin, preferably using wires to connect it to a piece of tin foil for easy finger contact. Identify the ESP32’s touch pin. Many IOs have touch functionality; the author uses IO4. ⚔️Driver Code Implementation Configure IO4 as input. ⚔️Driver … Read more
Introduction In embedded development, the persistence of stored data is crucial. The ESP32 offers various storage options, with flash memory being the most commonly used medium. However, flash memory has a limited number of write cycles, and frequent writes can shorten its lifespan. In particular, the EEPROM implementation of the ESP32 stores data in the … Read more
Previous articles introduced how to flash the <span>ESP32S3-BOX3</span> with <span>LVGL-Micropython</span> firmware, showcasing examples of a clock dial, tab view, button examples, and menu examples. This note will continue to share a keyboard example based on <span>LVGL-Micropython</span>. 1. Introduction to ESP32S3-BOX3 The ESP32-S3-BOX-3 is an open-source AIoT development kit equipped with the ESP32-S3 chip, featuring <span>16 … Read more
The ESP32, as a powerful IoT chip, integrates various serial communication interface protocols to meet different connectivity and peripheral needs. Below are the main serial communication protocols supported by the ESP32 and their characteristics: 1. Universal Asynchronous Receiver/Transmitter (UART) Protocol Basics: Asynchronous Serial Communication: No clock signal line is required; both parties communicate based on … Read more
1. Connecting ESP32 to the Network Before performing MQTT communication, the ESP32 needs to connect to a WiFi network. Below is the code to connect to WiFi: import network import time def connect_wifi(ssid, password): # Create WiFi client interface wlan = network.WLAN(network.STA_IF) wlan.active(True) # Check if already connected if not wlan.isconnected(): print('Connecting to network…') wlan.connect(ssid, … Read more
🌟 Comprehensive Guide to ESP32 Power Management: From 5μA Deep Sleep to Wi-Fi 6 Energy-Saving Technology! Can a button battery last for 3 years? Discover how the “energy police” of IoT devices work. 🔋 1. Three-Level Power Consumption Modes: Precisely Control Every Microamp The power management system of the ESP32 acts like asmart energy dispatch … Read more
🧠 1. Physical Storage Structure On-Chip Memory IRAM (Instruction RAM) 192KB (ESP32 classic version), with the first 64KB fixed for dual-core CPU cache, and the remaining space used for high-speed execution code (such as interrupt functions). DRAM (Data RAM) 328KB, used for global variables and stack data. About 64KB will be occupied by the protocol … Read more
🌟 Comprehensive Analysis of the ESP32 Wireless Communication Module: A Versatile Chip Supporting the IoT Landscape From Wi-Fi 6 to Bluetooth Mesh, this domestic chip priced at ¥10 is revolutionizing the IoT world! 📡 1. Wireless Communication: Full-Stack Protocols Controlled by One Chip Dual-Mode Integration: The Golden Combination of Wi-Fi + Bluetooth Classic Bluetooth for … Read more