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

Building a Game Joystick with ESP32 Chip

Building a Game Joystick with ESP32 Chip

Every weekend, Lao Jin plays single-player games with his two kids. One day, a thought crossed his mind to use a chip to create a simulated joystick with his daughter. He first gave his daughter a brief introduction to the names of the components: ESP32 chip, dual-axis XY sensor module, button module, breadboard. Popularizing the … Read more

Portable IoT Display Based on ESP32

Portable IoT Display Based on ESP32

This is a portable IoT display project that can be developed into various practical tools based on it and the Arduino_GFX library. For example, WiFi signal analysis, electronic photo albums, etc. With a well-designed 3D printed shell, it can be easily hung on a keychain or backpack for portability. Materials List TTGO T7 V1.0 (ESP32 … 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

Create a Best-Selling Solar E-Ink Weather Station

Create a Best-Selling Solar E-Ink Weather Station

Introduction As climate change becomes increasingly severe, people’s attention to weather conditions is also growing. More and more individuals are attempting to install weather displays at home to stay updated on local meteorological information. This solar-powered electronic paper weather display perfectly meets this demand, with an ultra-small size that can be seamlessly integrated into window … Read more

How I Destroyed My Raspberry Pi: A Cautionary Tale

How I Destroyed My Raspberry Pi: A Cautionary Tale

Introduction: Measuring multiple times is always better than measuring once. I fell into the pit, and I hope you can avoid it. Word count: 1241, reading time approximately: 2 minutes Measuring multiple times is always better than measuring once. I fell into the pit, and I hope you can avoid it. I wanted to write … Read more