How to Make a Smartphone Connected Door Lock

See how we built it, including our materials, code, and supplemental instructions, on Hackster.io: https://www.hackster.io/hackershack/s…
In this video, we show you how to make a smartphone-controlled, internet-connected deadbolt actuator powered by a Raspberry Pi that can be added onto your existing door lock without any modifications to the door.
The door lock can be controlled by multiple smartphones, and even notify you whenever someone locks/unlocks the door. All of this is done using a simple, drag-and-drop app builder (http://www.blynk.cc/) which makes building your own Internet of Things (IoT) app easier than ever. For an extra impressive door lock, we’ll also show you how to add a simple LED light to indicate if the door is locked, and a push-button to operate the lock manually.

Is the Raspberry Pi 4 really that bad? Using the Rasperry Pi 4 for 3D Printing.

The Raspberry Pi 4 is out! If you’ve read the first impressions, you always hear about overheating and USB issues – but is it really that big of a deal? I test the Raspberry Pi 4 against the Raspberry Pi 3 Model B and against the very first Raspberry Pi and the results are stunning to say the least.


CORRECTION: The Choetech USB cable only worked with the Huawei supply, not the Anker one.

Incredible video: ‘Replicator’ tech to revolutionize 3D-printers

Scientists have developed the next generation in 3D-printing technology, dubbed “the replicator.” It shines rays of light onto a yellow resin and molds it into a smooth object based on the program. The technology promises to revolutionize the medical field, space exploration and more. It’s also more environmentally friendly than other kinds of 3D-printing. Natasha Sweatte reports for News.Views.Hughes.

This Tiny House Was 3D-Printed in Less Than 48 Hours

When you hear “3D-printed home,” you may envision a far-fetched, futuristic concept. Thanks to Icon, a construction company that uses 3D printing, and non-profit New Story, though, the concept is quickly becoming a reality—and may be a major advancement in creating affordable homes for underserved communities.

According to Icon, the first permitted, 3D-printed home is just 350 square feet, and located in Austin, Texas. The tiny home serves as “proof-of-concept for sustainable homebuilding that will allow for safer, more affordable homes for more families, faster than ever,” per a press release.

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