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10-Month Voyage Proves Solar Cell Material Survives, Thrives in Space

“Dr. Lyndsey McMillon-Brown was hoping to see anything but mustard yellow. When the NASA research electrical engineer clicked open the photo of a small sample – a swatch of film no bigger than a sticky note – she let out a cheer …

A better way to match 3D volumes

“By mapping the volumes of objects, rather than their surfaces, a new technique could yield solutions to computer graphics problems in animation and CAD. In computer graphics and computer-aided design (CAD), 3D objects are often represented by the contours of …

A Device That Can be (Almost) Anything

“An IoT device that Retrieves data from public REST APIs, displays it on 6 VFD tubes, and also controls IoT devices with ease. What It Is A device that can be (almost) everything. Clock, calendar, stock ticker or weather station …

An electric vehicle battery for all seasons

“Many owners of electric vehicles worry about how effective their battery will be in very cold weather. Now a new battery chemistry may have solved that problem. In current lithium-ion batteries, the main problem lies in the liquid electrolyte. This …

Arduino Based Embroidery Machine

“Convert a plain sewing machine into an embroidery machine to personalize everything made from fabric. The goal of this article is to document my approach or my realization of markol’s project Embroiderino. The heavy lifting was done by him …

Automatic Pour Over Coffee Machine

“Make delicious pour-over style coffee with the press of a button! This machine aims to provide a better-tasting and more sustainable alternative to plastic Keurig pods, with a similar level of convenience. Using a scale built into the drip tray …

Boost for the quan­tum inter­net

“A quarter of a century ago, theoretical physicists at the University of Innsbruck made the first proposal on how to transmit quantum information via quantum repeaters over long distances which would open the door to the construction of a worldwide …

Brick a Bottle or Three

“This project is my rebuild of the Brick a Bottle or Three by Palingenesis. It has been redesigned to use an updated microprocessor along with a custom PCB and 3D printed case. Schematic The updated circuit is designed around a …

Building a Temperature Controller Simulator Using OpenPLC and an Arduino

“Variable control allows external conditions, like temperature, to be monitored so the controller can activate devices to heat or cool the system as needed. Simulate a temp controller with low-cost components! Electrical loads like DC and AC motors and solenoid-based …

Chiming Digital Clock

“A chiming digital clock using an Arduino Nano with the ST7735S colour display. Using the DS3231 RTC and a DFPlayer Mini This is a combination of projects that I have developed. The ST7735S digital clock and the chiming clock. I …