MAKER: mattwach／Translated by: 趣无尽 The combination of an e-paper display with any frame creates a classic look. Its unique nostalgic quality ensures that the display works created with it remain timeless. Previously, we introduced an e-paper photo frame: it can display one classic film for an entire year using a black-and-white frame display. Today, we … Read more
MAKER:DIY GUY Chris／Translated by: 趣无尽 The six faces of this colorful glowing cube are made up of a 5 X 5 WS2812 LED matrix, with each face connected through reserved soldering points. Each matrix plane is driven by an RP2040 chip, and theoretically, you can enlarge this cube and increase the number of cubes to … Read more
A few days ago, a frustrating problem left me quite unhappy.The final solution was simple, but the problem itself had me deep in thought. I thought it was time to tidy up the messy breadboard circuit, as all the issues began at that point. (Note: These circuits are mainly used to drive my Cunning Chronograph). … Read more
The piezoelectric trigger switch circuit described here is a microcontroller-compatible impact sensor switch module operating on a 5V DC power supply. The entire circuit can be assembled on a standard 5×7 cm circuit board. The piezoelectric ceramic element (Pz1) can also be easily mounted on the PCB. This module provides a “logic” (H) output when … Read more
Abstract: In response to the application demands for high-precision indoor autonomous navigation and positioning for pedestrians, a wearable human motion measurement device prototype integrating Arduino and the Xsens Awinda inertial measurement suite has been designed. This system is easy to wear and highly reliable, achieving synchronous measurement of dual-foot IMU information and foot distance, supporting … Read more
A long time ago, in Denmark, there was a king named Harald Blatand, who unified the constantly quarreling tribes of Denmark into a complete nation. The king had a nickname called “blátǫnn,” which translates to Bluetooth in English. In ancient Nordic runes, the initials of the king’s name ‘H’ and ‘B’ are written differently than … Read more
PCB Network News Sharing an interesting piece of information: using wire to create a “circuit board”. I hope it inspires colleagues in the industry. What is Freeduino? It is an Arduino UNO board without any circuit board. It interconnects components using a technique called freeform, utilizing wires or copper instead of a circuit board. It … Read more
This article is sourced from “Invention and Innovation” March 2024 issue At home, my mom often can’t find her phone. Every time, I have to use the search function on my dad’s phone to locate her phone and make it sound. Whenever she can’t find the TV remote, she always says, “If only the remote … Read more
The ultrasonic sonar is a device that measures the distance to an object by emitting sound waves at a frequency above the human hearing threshold (typically above 20KHz). Its working principle involves sending out sound waves and measuring the time it takes for the sound waves to bounce back after hitting an object. By calculating … Read more
MAKER: tomouwerkerkerk／Translated by: 趣无尽 This is a compact and warm floating desktop atmosphere lamp, with color-changing dim light adding a gentle ambiance to the room. It is constructed based on Arduino and 3D printed components, and is very simple to assemble. Beginners who are interested can give it a try. Video Demonstration: Materials List Arduino … Read more