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3D Printed Bluetooth Headphones

“Want to build yourself an awesome sounding, decent looking pair of bluetooth headphones? You’ve come to the right place! Building these headphone doesn’t require much knowledge of electronics and beyond access to a 3D printer, only basic tools …

3S Battery Charger

“Build your own Li-Po & Li-ion Balance Charger for under $10 Recently I purchased some 3S Li-Po batteries for a project I was working on. Unlike single cell batteries, batteries with multiple cells should be charged in a balanced way. This …

555 Timer - Timer

“We’ve come full circle. Here’s a timer made up of timers… This project was undertaken as a potential submission for the 555-contest hosted by Hackaday in 2021. At its core this widget operates as a cooking timer, implemented …

8x8 Dot Matrix Sound Level Meter

“Previously I introduced Arduino base Sound Level Meter circuit (From hereinafter as SLM) circuits using simple LEDs. This time let’s change the visual effect with a more multifunctional 8x8 LED dot matrix display. Although the previous SLM used Adafruit …

A Tiny Counter

“Building a simple 7 segment display counter using ATtiny microcontroller. Overview In this project, we will be controlling the 7-segment display using 2-ATtiny microcontrollers which get input from the push button and increment the number. The ATtiny will be programmed …

Amping Up Battery Performance with Black Glasses Grafted on Micron Silicon

“Scientists develop black glasses grafted silicon microparticles as negative electrode material for improving lithium-ion battery performance Silicon-based negative electrode materials have excellent energy capacity making them ideal for use in lithium-ion batteries. However, their practical application faces challenges including lack …

Arduino Liquid Level Meter with simple Homemade Sensor

“How to make a sensor yourself, and then with the help of a microcontroller to accurately determine the level of liquid in the container. There are many different ways to detect the level of water in a particular container. This …

Bicycle Computer on Spresense

“A connected dash cam bicycle computer that collects your sensor data like heart rate and guides you to the nearest ice cream shop. This project aims to build a bicycle computer using the Sony Spresence main board in combination with …

Bioengineered cornea can restore sight to the blind and visually impaired

“Researchers and entrepreneurs have developed an implant made of collagen protein from pig’s skin, which resembles the human cornea. In a pilot study, the implant restored vision to 20 people with diseased corneas, most of whom were blind prior …

Breakthrough for the realization of ultrafast quantum computers: the world’s fastest 2-Qubit gate between two single atoms

“The team succeeded in executing the world’s fastest two-qubit gate (a fundamental arithmetic element essential for quantum computing) using a completely new method of manipulating, with an ultrafast laser, micrometer-spaced atoms cooled to absolute zero temperature. For the past …