AI Chatbot AI chatbot AI Chatbot: This project is made using an ESP32-S3 motherboard, 1 audio amplifier module, 1 speaker, and one microphone. The device connects to a server via WiFi to achieve AI chat functionality. The main features include: 1. Knowledge Q&A: capable of answering various knowledge questions in fields such as history, culture, … Read more
In embedded development, when facing multicore processors (such as the popular ESP32 dual-core chip), how can we efficiently allocate tasks and avoid resource contention? Today, we will introduce the <span>xTaskCreatePinnedToCore</span> function, which is FreeRTOS’s “task scheduling magic tool” tailored for multicore scenarios. We will guide you through a complete project example to help you fully … Read more
FreeRTOS is an open-source real-time operating system kernel, and tasks are its core execution units. Each task has its own stack and execution context, managed by the scheduler based on priority. In embedded systems like the ESP32, tasks can run on different CPU cores, supporting preemptive scheduling (higher priority tasks can interrupt lower priority tasks). … Read more
Introduction Hello everyone, I am Mai Ge. Today, I would like to recommend an open-source smart home project. In the era of the Internet of Things (IoT), the ESP8266 and ESP32 chips have become favorites in embedded development. These low-cost, high-performance Wi-Fi modules are widely used in smart homes, automation systems, and sensor networks. However, … Read more
The ESP32 series chips (such as ESP32-C6, ESP32-S2, etc.) ensure the full link security of devices from boot to operation through **Secure Boot** and **Flash Encryption** hardware security mechanisms. Below are the core mechanisms and implementation details: 1. Secure Boot 1. Core Functions Prevention of Unauthorized Firmware Execution by verifying the integrity of the firmware … Read more
“In today’s world where electronic products are deeply integrated into our lives, low power design is key to extending device battery life and enhancing user experience. As the core control component, the low power modes of MCUs are particularly important. Mainstream MCUs such as the 51 series, STM32, and ESP32 all have adapted modes. Below, … Read more
【Click the blue text above to follow the DF Maker Community and become a tech enthusiast】 The community’s public account records weekly shareable maker-related content, published every Friday～ Submissions or recommendations for related content are welcome. Submission email:<span>[email protected]</span> Arduino Automated String Art Machine This project is an automated string art machine controlled by an Arduino … Read more
1. Hardware Platform Selection and Modules 1. STM32 Solution Processor: STM32F407 / STM32H7 (high frequency, good performance) Peripheral Modules: WiFi Module: ESP8266 / ESP32-WROOM as the networking module Microphone Module: I2S MEMS microphone (e.g., INMP441) Speaker: I2S DAC + small speaker Display: TFT LCD (SPI/Parallel) Storage: SD card / external Flash (for caching voice data) … Read more
STM32 vs Arduino: Why Does Your LED Always Fail to Light Up? In recent IoT projects, I have used various mainstream development boards and found differences in the drive levels of their onboard LEDs. This is documented for reference. For example, the onboard LEDs of Arduino Nano (D13), Arduino Uno (D13), and ESP32 (D2) are … Read more
I remember that night when I was awakened by the heat from the air conditioner. I fumbled in the dark looking for the remote control but couldn’t find it after a long search. At that moment, I thought how great it would be if I could control all the devices in my home with my … Read more