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João Alves

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A new spin on magnetism

“A new approach developed by Boston College physics researchrs creates synthetic layered magnets with a unprecedented level of control over their magnetic properties The magnetic properties of a chromium halide can be tuned by manipulating the non-magnetic atoms in the …

Airbus to build ‘first interplanetary cargo ship’

“Airbus-France will build the huge satellite that brings the first Martian rock samples back to Earth. This material will be drilled on the Red Planet by the US space agency’s next rover, Perseverance, before being blasted into orbit by …

Announcing the Grace Hopper subsea cable, linking the U.S., U.K. and Spain

“Today, 98% of international internet traffic is ferried around the world by subsea cables. A vast underwater network of cables crisscrossing the ocean makes it possible to share, search, send, and receive information around the world at the speed of …

Project  atinybasic

atinybasic

“atinybasic is a straight-forward port of Dennis Allison’s famous “Tiny BASIC” from “The People’s Computer Company” newsletter circa September 1975. In the spirit of the original, atinybasic does not attempt to be a complete BASIC environment per se …

Audio VU/Sound Level Meter with LM339

“This is an “Audio VU Meter” or “Sound Level Meter”, it is a general-purpose bar-graph Audio VU meter designed for fun projects. All you need is to hook up one wire to the output of the audio amplifier’s speaker …

Automated Pothole Detection

“An accelerometer measure bumps/potholes. These are geo-tagged with a GPS-unit and saved to an uSD card. Visualization via Google Maps. I teach an Internet of Things workforce development bootcamp (http://deepdivecoding.com/iot) at Central New Mexico Community …

Autonomous Robot Performing Different Tasks

“In this project, a dedicated algorithm is made so that the robot can autonomously navigate the track as well as perform tasks such as line following, detecting an obstacle, grabbing and delivering an object. In addition, robustness is also considered …

Beer Keg Scales

“I came back to Australia in 2016 after some years living in Thailand and I couldn’t believe the price of a carton of beer, around $50. So I set up my own brewery again, this time using kegs instead …

Building a Digital Slot Car Lap Counter

“Having some Carrera Go slot car racing sets at home I always regarded the included analog lap counters as kind of boring. I wanted to build a better lap counter with more functionality and which makes playing with a Carrera …

Cherry MX Wireless Keyboard

“The keyboard has a 4x4 matrix of cherry MX switches, which are connected to the SparkFun ESP32 Thing Plus. Each key can send either a keyboard or mouse command to the host computer thanks to the BLE HID Arduino Library …