New Supercapacitors will replace Batteries? Stress Testing LICs (Lithium-Ion Capacitors)

In this video we will be having a closer look at a new type of supercapacitor. They are called Lithium-Ion Capacitor or LIC and they have some things in common with the well known Lithium-Ion batteries. But will they replace them? What advantages & disadvantages do they come with? When to use them? Let’s find out.

This Endearingly Janky Raspberry Pi-Powered Coffee Maker Automates Your Morning Routine

It won’t win any awards for presentation, but this Python-driven automation solution gets you your cup of joe in the morning regardless.

Pseudonymous maker “petertree” has built a coffee maker — “2x more expensive and messy than one you can get on Amazon,” he notes — powered by a smart plug, a peristaltic pump, and a Raspberry Pi.

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The New GPi Case 2 Is Finally Here👍 An All-New Raspberry Pi CM4 GameBoy! Hands-On Review

We Finally Have a New Retroflag Handheld! In this video we take look at the all-new RetroFlag GPi Case 2, A GameBoy DMG Inspired Handheld emulation Console Powered by Raspberry Pi CM4! With an upgraded 3” 640×480 IPS Display and the option of an HDMI Dock this little retro handheld has turned out to be really awesome and it can play PSP, Dreamcast, PS1, and even N64 Games using RecalBox, RetroPie, or even Batocera.

O.G. Game Boy Games Are Still Being Made (And Look Amazing)

Surprisingly, people are still making new games for the original Game Boy family of consoles, even though we live in the year 2021, where your watch and most of the appliances in your kitchen have better graphics. Even more surprisingly, some of these new games look awesome. The world of homebrew Game Boy games is bafflingly vast and sometimes just baffling, but it’s also home to legitimately talented developers who have decided to pour their sweat and tears into making games for grey bricks. Here are a few recent examples that caught our attention: 

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Space Startup Agnikul Can 3D Print You a Customized Rocket Engine — in Just Three Days

Designed for use with a customizable launch vehicle, these 3D-printed rocket engines can be turned around in a few days.

Chennai-based Agnikul is looking to make it possible to offer rapid-turnaround on-demand space launches — by 3D printing custom rocket engines and other components in less than three days.

“We are building a launch vehicle that carries a payload capacity of 30 to 300 kilograms [around 66-660lbs], depending on the needs of the customers,” Agnikul’s chief operating officer Moin SPM tells IEEE Spectrum in an interview. “We are trying to provide a rapid, on-demand launch service by 3D-printing the entire rocket engine in one shot.”

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DIY High Flow 3D Printing Nozzle

Sometimes advances happen when someone realizes that a common sense approach isn’t the optimal one. Take radio. Success in radio requires bigger antennas and more power, right? But cell phones exist because someone realized you could cram more people on a frequency if you use less power and smaller antennas to limit the range of each base station. With FDM 3D printing, smaller nozzles were all the rage for a while because they offer the possibility of finer detail. However, these days if you want fine detail you should be using resin-based printers and larger nozzles offer faster print times and stronger parts. The Volcano hotend started this trend but there are other options now. [Stefan] over at CNC Kitchen decided to make his own high flow nozzle and he claims it is better than other options.

Don’t get too carried away with the DIY part. As you can see in the video below, he starts with a standard nozzle, so it is really a nozzle conversion or hack. The problem with high flow isn’t the hole in the nozzle. It is melting the plastic fast enough. The faster the plastic moves through the nozzle, the less time there is for it to melt.

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James Bruton built a robot that moves like an earthworm

Self-propelling robots come in a whole host of shapes, sizes, and capabilities, with some being able to fly while other can walk on just a couple or many legs. But YouTuber James Bruton wanted to innovate on this concept even further by designing and building a robot that mimics an earthworm through extending and contracting segments at certain times to slowly inch along the ground. This class of motion is called peristalsis, and it works by constricting a ring of muscles to propagate material, such as in the case of the digestive tract, or to move an entire body. 

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Learn how to build your own massive 3D-printed CNC router

3D printers are very popular in the maker community and CNC machines complement them well. While 3D printers fabricate parts by adding material over time, CNC mills and routers fabricate parts by subtracting material. That is preferable when working with large parts or when you require a lot of precision. If you want an affordable option, this guide will show how to build Ivan Miranda’s 3D-printed CNC machine design.

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