Little Smart AI has been quite popular recently, and the short videos about it online have garnered a lot of attention. Essentially, it is a DIY project that combines the ESP32 series module, a digital amplifier, and a microphone module, enabling large model AI dialogue.Thus, I got the urge to create a board based on … Read more
Did you know? The smartphones, smartwatches, washing machines, and even cars we use every day all contain an “invisible brain”—the embedded system. The microcomputers that allow developers to easily create various smart gadgets are quietly changing the world. This all began over 60 years ago. In the 1960s, the prototype of embedded systems appeared in … Read more
What is a Real-Time Operating System (RTOS) A Real-Time Operating System (RTOS) is an operating system specifically designed for real-time applications. Real-time applications require predictable responses within specific time constraints, so RTOS focuses on providing an emphasis on timing constraints to ensure that the system can meet real-time performance requirements. 1. Real-Time Performance: Hard Real-Time … Read more
The GPIO port connects to the BEEP pin of terminal J2, allowing the buzzer to sound by inputting a high level on the GPIO port. Frequency: Pitch, kHz Duty Cycle: Sound intensity, 0~100% The duty cycle is the ratio of the time the high level is on to the signal period: Duty Cycle = (Time … Read more
For students who are new to the embedded field, the ESP32 and STM32 represent two different technical gateways. The ESP32, developed by Espressif Systems, focuses on IoT features; the STM32 is a family of general-purpose microcontrollers from STMicroelectronics. Both are equipped with a 32-bit Cortex-M core, but they are positioned quite differently. 1.Core Differences Comparison … Read more
In September 2024, I DIYed an RGB LED volume meter using the ATMEGA328P to collect analog signals and drive the WS2812. The strip is 1 meter long with a total of 60 LEDs, super cool and super fun so it’s basically online 24 hours a day. Later, while browsing forums, many experts were talking about … Read more
If you don’t want to miss my updates, remember to check the public account in the upper right corner and set it as a star, take down the stars and give them to me. Are there forgetful friends like me? Things are right at hand, but with a breath and a turn, I forget where … Read more
Prices have halved! Why do domestic chips make international giants tremble? The blood and tears of engineers in the startup world are revealed. Can you believe it? A domestic chip has put the star products of international giants in an awkward position! Five years ago, an engineer from a major company mocked domestic chips as … Read more
First, prepare the ESP32 development board, a breadboard, several DuPont wires, and an SSD1306 OLED display. Then, connect the development board, breadboard, and OLED display according to the wiring diagram. Next, use the PlatformIO plugin in VS Code to write and upload the code for the OLED display. The wiring diagram is as follows:
Project Name: Standalone Page Turning Clock Project Author: DaqoLee Introduction Who would have thought… I actually saw an open-source purely Chinese clock, and it’s a page turning version! Let’s take a look together~ Table of Contents Project Description, Structure Description, Installation Process, Precautions, Circuit Design Diagram, Component Description, Source Code, Video Demonstration, Open Source Material … Read more