Printable Quick Grip Trigger Clamp (Functional)

Printable Quick Grip Trigger Clamp (Functional)
By Arron_mollet22

Quick Grip Trigger Clamp

This is a fully functional Quick Grip Trigger Clamp. C-Clamps have become very popular prints but the clamp allows quick single hand adjustments. This design was created with fusion 360 and printed on a Prusa i3 MK3.

Everything on this clamp is printed with exception to the springs which make it functional.

Springs can be found in this great spring assortment on amazon:

https://amzn.to/2DAFIbd

Springs needed are:

0.035″x0.25″x0.5″ for the release trigger

0.041″x0.437″x1.062″ for the clamp trigger

The kit has enough springs to make 6+ clamps.

Filament

The printed version shown in pictures is printed in three different filaments:

Black parts: https://amzn.to/2Dt6xho
Ziro Carbon Fiber PLA (One of my favorites to use)

Grey parts: https://amzn.to/2DqNS5J
Prusament Galaxy Silver PLA

Orange parts: https://amzn.to/2VXMHSm
Amazon Basics PETG

April 20, 2019 at 11:47PM
via Thingiverse – Popular Things http://bit.ly/2GuKRC0

Annunci

Keeping It Weird In A Parallel Universe: Maker Faire Austin 2019 Has You Covered

Keeping It Weird In A Parallel Universe: Maker Faire Austin 2019 Has You Covered
By Jennifer Blakeslee

    In its 10th edition, Maker Faire Austin takes making into the next dimension: This years’ faire is all about the 3d, augmented reality, robots and drones, and artificial intelligence! With over 60 exhibits and well over 100 makers, Maker Faire Austin features a number of exhibiting and sponsoring […]

Read more on MAKE

The post Keeping It Weird In A Parallel Universe: Maker Faire Austin 2019 Has You Covered appeared first on Make: DIY Projects and Ideas for Makers.

May 1, 2019 at 07:45PM
via Make: DIY Projects and Ideas for Makers http://bit.ly/2Y10GYl


Watch A Group Of High Schoolers Perform ‘Alien’ As A Play

Watch A Group Of High Schoolers Perform ‘Alien’ As A Play
By Caleb Kraft

This story has been sweeping the internet for the past week or two. A highschool group decided to eschew the classic plays often performed, and instead put on a full production of the 1979 movie Alien. The North Bergen High School drama club in New Jersey went all out, self […]

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The post Watch A Group Of High Schoolers Perform ‘Alien’ As A Play appeared first on Make: DIY Projects and Ideas for Makers.

May 1, 2019 at 03:00PM
via Make: DIY Projects and Ideas for Makers http://bit.ly/2vuRvTM


Mini CNC Laser Engraver

Mini CNC Laser Engraver
By maggie_shah

This is an Remixed version my old CNC Laser engraver and made a Stable version of an Arduino based Laser CNC engraver and thin paper cutter using old DVD drives and using 250mW laser.
https://www.instructables.com/id/DIY-Mini-CNC-Laser-Engraver/

March 28, 2019 at 12:30PM
via Thingiverse – Popular Things http://bit.ly/2VbfLZB


Give Your Raspberry Pi SD Card a Break: Log to RAM

Give Your Raspberry Pi SD Card a Break: Log to RAM
By Dan Maloney

The fragility of SD cards is the weak link in the Raspberry Pi ecosystem. Most of us seem to have at least one Pi tucked away somewhere, running a Magic Mirror, driving security cameras, or even taking care of a media library. But chances are, that Pi is writing lots and lots of log files. Logging is good — it helps when tracking down issues — but uncontrolled logging can lead to problems down the road with the Pi’s SD card.

[Erich Styger] has a neat way to avoid SD card logging issues on Raspberry Pi, he calls it a solution to reduce “thrashing” of the SD card. The problem is that flash memory segments wear out after a fairly low number of erase cycles, and the SD card’s wear-leveling algorithm will eventually cordon off enough of the card to cause file system issues. His “Log2Ram” is a simple Unix shell script that sets up a mount point for logging in RAM rather than on the SD card.

The idea is that any application or service sending log entries to /var/log will actually be writing them to virtual log files, which won’t rack up any activity on the SD card. Every hour, a cron job sweeps the virtual logs out to the SD card, greatly reducing its wear. There’s still a chance to lose logging data before it’s swept to disk, but if you have relatively stable system it’s a small price to pay for the long-term health of a Pi that’s out of sight and out of mind.

One thing we really like about [Erich]’s project is that it’s a great example of shell scripting and Linux admin concepts. If you need more information on such things, check out [Al Williams’] Linux-Fu series. It goes back quite a way, so settle in for some good binge reading.

April 8, 2019 at 01:01PM
via Blog – Hackaday http://bit.ly/2I5vtiW


Fooling Fingerprint Scanners With A Resin Printer

Fooling Fingerprint Scanners With A Resin Printer
By Lewin Day

Biometrics have often been used as a form of access control. While this was initially limited to bank vaults in Hollywood movies, it’s now common to see such features on many laptops and smartphones. Despite the laundry list of reasons why this is a bad idea, the technology continues to grow in popularity. [darkshark] has shown us an easy exploit, using a 3D printer to fool the Galaxy S10’s fingerprint scanner.

The Galaxy S10 is interesting for its use of an ultrasonic fingerprint sensor, which continues to push to hardware development of phones minimal-to-no bezels by placing the sensor below the screen. The sensor is looking for the depth of the ridges of your fingerprint, while the touchscreen verifies the capacitive presence of your meaty digit. This hack satisfies both of those checks.

[darkshark] starts with a photograph of a fingerprint on a wineglass. This is then manipulated in Photoshop, before being used to create geometry in 3DSMAX to replicate the original finger. After making the part on an AnyCubic Photon LCD resin printer, the faux-finger pad is able to successfully unlock the phone by placing the print on the glass and touching your finger on top of it.ster

[darkshark] notes that the fingerprint was harvested at close range, but a camera with the right lenses could capture similar detail at a distance. The other thing to note is that if your phone is stolen, it’s likely covered in greasy fingerprints anyway. As usual, it serves as an excellent reminder that fingerprints are not passwords, and should not be treated as such. If you need to brush up on the fundamentals, we’ve got a great primer on how fingerprint scanners work, and another on why using fingerprints for security is a bad plan.

[via reddit, thanks to TheEngineer for the tip!]

April 8, 2019 at 10:01AM
via Blog – Hackaday http://bit.ly/2G6vCjF


Get Great 3D Scans with Open Photogrammetry

Get Great 3D Scans with Open Photogrammetry
By Elliot Williams

Not long ago, photogrammetry — the process of stitching multiple photographs taken from different angles into a 3D whole — was hard stuff. Nowadays, it’s easy. [Mikolas Zuza] over at Prusa Printers, has a guide showing off cutting edge open-source software that’s not only more powerful, but also easier to use. They’ve also produced a video, which we’ve embedded below.

Basically, this is a guide to using Meshroom, which is based on the AliceVision photogrammetry framework. AliceVision is a research platform, so it’s got tremendous capability but doesn’t necessarily focus on the user experience. Enter Meshroom, which makes that power accessible.

Meshroom does all sorts of cool tricks, like showing you how the 3D reconstruction looks as you add more images to the dataset, so that you’ll know where to take the next photo to fill in incomplete patches. It can also reconstruct from video, say if you just walked around the object with a camera running.

The final render is computationally intensive, but AliceVision makes good use of a CUDA on Nvidia graphics cards, so you can cut your overnight renders down to a few hours if you’ve got the right hardware. But even if you have to wait for the results, they’re truly impressive. And best of all, you can get started building up your 3D model library using nothing more than that phone in your pocket.

If you want to know how to use the models that come out of photogrammetry, check out [Eric Strebel]’s video. And if all of this high-tech software foolery is too much for you, try a milk-based 3D scanner.

April 8, 2019 at 07:01AM
via Blog – Hackaday http://bit.ly/2FWWHVl