Blogs
What Is a Semiconductor?

Semiconductors are used extensively in electronic circuits. As its name implies, a semiconductor is a material that conducts current, but only partly. The conductivity of a semiconductor is somewhere between that of an insulator, which has almost no conductivity, and a conductor, which has almost full conductivity. Most semiconductors are crystals made of certain materials, most commonly silicon.

1 day ago | by: Doug Lowe
Electromagnetic spectrum

Electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. Although all electromagnetic waves travel at the speed of light in a vacuum, they do so at a wide range of frequencies, wavelengths, and photon energies.

Ortur Laser Master 2 PRO - 20W CNC Engraver/Cutter

 

????This one has a quite big engraving area, the laser is of 5.5W which is powerful, so safety glasses ON. We also have the roller engraver so we can print or cylinders or round objects. The machine comes with extra features that other engraves we’ve seen on this channel don’t, and in this video, I’m going to show you everything and test the laser with all sort of materials, see what we can engrave, what we can burn and what we can cut.

1 month ago | by: ELECTRONOOBS
Battery Portable Soldering Iron - PCB and Code

Homemade fully portable soldering iron with a battery inside taht could melt solder in under 10 seconds. See the schematic, the code and the PCB and make a digital soldering ironj yourself It is also based on Arduino and you can always improve the code.

1 month ago | by: ELECTRONOOBS
Laser Engraving with DIY SCARA Robot

The SCARA robot has 4 degrees of freedom which are driven by 4 NEMA 17 stepper motors and controlled using an Arduino board. In the original video I used an Arduino UNO board in combination with a CNC Shield, but now we will use an Arduino MEGA board in combination with a RAMPs board. We need this combination because we will use the Marlin 3D Printer firmware for controlling the robot. 

1 month ago | by: howtomechatronics
Starship is Stacked on the Super Heavy Booster. The Tallest Rocket Ever Built

Once again, things are gearing up at SpaceX’s South Texas Launch Facility, located just outside the village of Boca Chica, Texas. In recent weeks, the aerospace community has been abuzz about the rollout and Static Fire test of the Super Heavy Booster 3 (B3) prototype. This was the first time a booster was tested, which will be responsible for launching the Starship to space in the near future. Since then, things have only ramped up some more.

1 month ago | by: MATT WILLIAMS
Why does BLDC motors are called DC motors?

A straight answer is due to the origination, and operating characteristics of this motor are very much similar to Brushed DC motor. That is the reason for being named as Brushless DC motor. Hereafter, a very immediate question arises in our mind, Is it comes under any subclass of DC motor? The answer is NO. Then, what were the reason behind to be named as Brushless DC motor?!

1 month ago | by: ELECTRONOOBS
Tesla Megapack Battery Caught On Fire During Neoen’s Testing, No One Injured

For the first time, a Tesla Megapack caught on fire yesterday at the newly registered Victoria Big Battery in Moorabool, which is in the state of Victoria, Australia. News7 Melbourne shared images of one Megapack battery unit that was ablaze. It looks like only two of the giant battery units were affected.

2 months ago | by: Johnna Crider
Inverted 3D printer that prints upsidedown

Lots of people have attempted to design and build fold-up 3d printers, many of which turn out quite compromised. Now I have seen the first that looks properly competent, and erects into something that prints well – I am guessing at least as well as ~£500 printers

2 months ago | by: Steve Bush
Blue Origin successfully sends Jeff Bezos and three others to space and back

Jeff Bezos launched to the edge of space Tuesday morning with three fellow passengers and landed safely in a Texas desert aboard his space company’s crew capsule. The NS-16 mission marked Blue Origin’s first to carry humans and kicked off commercial service for the company’s space tourism business. Flying Bezos, the richest man in the world who founded Blue Origin in 2000, sent a signal to prospective space tourists that the company’s suborbital New Shepard rocket is safe to fly and open for business.

2 months ago | by: Joey Roulette
FLAT TRANSFORMER GIVES THIS PCB TESLA COIL SOME KICK

Arguably, the most tedious part of any Tesla coil build is winding the transformer. Getting that fine wire wound onto a suitable form, making everything neat, and making sure it’s electrically and mechanically sound can be tricky, and it’s a make-or-break proposition, both in terms of the function and the aesthetics of the final product. 

2 months ago | by: Dan Maloney
FAA warns SpaceX that massive Starship launch tower in Texas is unapproved

The Federal Aviation Administration warned Elon Musk’s SpaceX in a letter two months ago that the company’s work on a launch tower for future Starship rocket launches is yet unapproved, and will be included in the agency’s ongoing environmental review of the facility in Boca Chica, Texas.

2 months ago | by: Michael Sheetz









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