Build a Bluetooth Speaker with Free PCB: An Ultra-Simple Solution! Open Source…

Build a Bluetooth Speaker with Free PCB: An Ultra-Simple Solution! Open Source...

Introduction Why is the top so pointy? Just kidding! Today! I will guide you step by step to create a super cool Bluetooth speaker! 01It has 4 major highlights!” ① Simple to make! Simple circuit design! Easy to solder! Most components use through-hole packages. No coding required, just burn the firmware! Pure hardware design! ② … Read more

Super Mini! Coin-Sized 3D Printed Flashlight with Wireless Charging? So Cute Even Thieves Want to Steal It! (Includes Production Secrets)

Super Mini! Coin-Sized 3D Printed Flashlight with Wireless Charging? So Cute Even Thieves Want to Steal It! (Includes Production Secrets)

Attention all DIY enthusiasts! Today, I want to showcase my freshly made “palm-sized gadget”—a mini flashlight that is fully 3D printed and comes with wireless charging!✨ Clear goal: To create a super small, super bright, and super convenient portable light companion! Going out for a stroll, looking for keys, or checking under the bed? No … Read more

DIY – Configuring a Remote Control for Your Camera

DIY - Configuring a Remote Control for Your Camera

Click the aboveblue text, send it to your friends, and share more information😉 Photography can bring a lot of joy to work, study, and life. Often, it is necessary to record the challenges encountered during work or experiments, and a camera can capture the moment. In learning, there are times when quick documentation of materials … Read more

DIY PCB Fabrication Using Acid Etching: A Step-by-Step Guide

DIY PCB Fabrication Using Acid Etching: A Step-by-Step Guide

Abstract: This article introduces a very old PCB manufacturing process – the etching method. The advantages of this process include low cost and short time. However, there are also significant drawbacks, such as the complexity of making double-sided boards and environmental concerns! The specific manufacturing method is as follows: Designing the PCB 1. Design the … Read more

Unboxing and First Impressions of Raspberry Pi 4

Unboxing and First Impressions of Raspberry Pi 4

Reviewer: Circle (Base London) External Connection: Drift on a Donkey (Base Shanghai) Raspberry Pi Arrival Time: 11:00 UK time on June 24, only 3 hours after the release!! Unboxing Path: I am Circle, officially joining the Dalwen platform today to share knowledge about Raspberry Pi and other hardware teardown reviews from time to time. > … Read more

Multiplexing: Lighting Up Cupid’s Arrow

Multiplexing: Lighting Up Cupid's Arrow

Using LEDs to create a Cupid’s arrow pattern with different dot matrix variations seems like a good idea.The romance of electronic engineers does not depend on how perfect the finished product is, but rather on the difficulties in the implementation process. Cupid’s arrow The small board below integrates 40 LEDs to form the Cupid’s arrow … Read more

Micro:bit Particle Kit Tutorial: Speed Control Fan

Micro:bit Particle Kit Tutorial: Speed Control Fan

Tutorial series list: Tutorial | Micro:bit Particle Kit (Based on Mind+) 01 – Introduction Tutorial | Micro:bit Particle Kit (Based on Mind+) 02 – DIY Emoji Tutorial | Micro:bit Particle Kit (Based on Mind+) 03 – Blinking LED The spaceship drifts in the universe, watching the alternating lights outside the porthole. The temperature inside the … Read more

Introducing the STM32G4: A Powerful MCU for Diverse Applications

Introducing the STM32G4: A Powerful MCU for Diverse Applications

At the end of last year, the launch of the STM32G0 actually released a very clear signal – the mainstream upgrade journey of STM32 MCUs from the “F” series to the “G” series has fully begun, and in the future, we will welcome more and more new devices from the “G” generation! As expected, the … Read more

Detailed Explanation of STM32 Microcontroller Minimum System

Detailed Explanation of STM32 Microcontroller Minimum System

STM32F103RCT6: STM32F103RCT6 is an embedded microcontroller integrated circuit (IC) with a 32-bit Cortex-M3 core processor, a speed of 72MHz, a program memory capacity of 256KB, program memory type of FLASH, RAM capacity of 48K, and package LQFP64. STM32 Microcontroller Naming Rules: Minimum System of STM32 Microcontroller: The so-called minimum system of the microcontroller is a … Read more

Creative Playing Card Clock Based on ESP32

Creative Playing Card Clock Based on ESP32

MAKER:shiura/Translated by: Fun never ends A deck of idle playing cards and a 3D printed stand can build a highly creative playing card clock. I used playing cards as the flaps of the clock and made an interesting and crazy clock with minimal parts. The most challenging part of the project was creating a detachable … Read more