I needed a compact and loud whistle to fit my keychain and couldn't find any design which fits my requirements. What I found was either too bulky, too fragile, or too quiet.
So I made my own design. Extremely loud for its size, very compact, sounds similar to a referee's whistle, easy to blow, sturdy and hard to destroy, lean design, easy and fast to print (< 20 min), little filament required (approx. 2.5 grams).
We ship community protection whistles for free. Need some? Click the email link below & tell us how many you need (between 100 - 1000) & where to send them.
his is the Star Trek Riker Pose Clock—a fun, 3D-printed timepiece inspired by a hand-drawn version I stumbled upon while doom-scrolling. I decided to bring it to life in three dimensions. The clock features Commander Riker in his iconic pose, with one foot raised—a stance that has been widely referenced online. The bent leg serves as the hour hand, while the straight leg functions as the minute hand. For the second hand, I used the one included with the clock kit and superglued a silhouette of the Enterprise-D to its end. As time passes, Riker strikes some truly comical poses.
The MF3 file includes subtractive cylinders, allowing the clock to be adjusted to fit various clock kits or you can just drill out the holes. I recommend using a kit with a black second hand for the best aesthetic. This prints face down.
This is a class ring design that you can completely customize. I also include an example of customization.
Greyprints for a Pwnagotchi case that looks like a pager. Buy the greyprints or a case to install your Pwnagotchi into.
The Hacker Pager is an open source Meshtastic device that looks like an old-school alphanumeric pager. Operates completely off the grid. Supports all of the features that Meshtastic nodes support, from communicating as a client to acting as a smart repeater. You don't need a keyboard or smartphone app to use it (but they probably help); compatible with the official Meshtastic app anyway. Can store traffic as .pcap files to microSD card. Includes a spectrum analyzer (850 to 950 MHz). For style points, it includes a CHIP-8 emulator that can be used to play games stored on the microSD card.
Firmware: https://github.com/exploiteers/Meshtastic-Exploiteers-Hacker-Pager
Case: https://github.com/exploiteers/Case-Design-Files-Exploiteers-Hacker-Pager
PCB layout: https://github.com/exploiteers/Electronics-Design-Exploiteers-Hacker-Pager
This project reproduces the Sun 3/60 computer from available schematics such as https://www.sun3arc.org/schematics/3_60/index.phtml
At the moment
- only implementing the min required 4mb of RAM
- left out the SCSI and Video sections
- only put in the serial controller for A/B, left out the keyboard/mouse
- TTL serial, I didn't implement full rs232 or modem support
- left out the coax ethernet entirely
- no FPU
The board can boot a standard boot PROM (using version XXX for development), as well as netboot SunOS 4.1.1 and NetBSD10. NetBSD with a GENERIC kernel is not really functional because of the 4MB of RAM and swap over network.
Current version is a 4-layer board - check the build/version log in the production directory for known issues.
The RepRapMicron Project, or μRepRap, is an extension of the Open Source RepRap 3D printer project that aims to bring micron-scale fabrication into very widespread adoption. The main project page is here. It uses hardware and software familiar to 3D printer developers, and materials that are easily and inexpensively available.
The meaty part is in the "maus" directory, where the OpenSCAD models for a rapidly reconfigurable 3D printed prototype can be found.
At present, the project is in the very early prototyping stages, figuring out the unknown unknowns. This repository holds files that can reasonably be expected to be useful to potential developers/experimenters, but at this stage there are absolutely no guarantees.
The proof-of-concept prints have already manufactured things between 8 and 30 microns in size.
Search and Rescue drones are a life saving technology for disaster response, as they can provide real-time information, deliver supplies, and help locate survivors in inaccessible areas. Unfortunately, commercial SAR drones are often expensive and hard to repair.
The hackers.town Void Mantis.
"Presidents are temporary; Wu-Tang is forever."
This is a replica of the Jarvik-7 artificial heart, first successfully implanted in a human in 1982.
Greyprints for 3d printing Devo energy domes.
Greyprints for 3d printing Devo energy domes.
Greyprints for fabbing a C64 breadbin case from scratch.
This case is consisting of 4 pieces, so it is compatible with 3D printing. bottom half is very similar to original case. even vents and supports are in original place. top part is a little different. biggest change to top part is it uses M3 size threaded insert on mounts that connect it to bottom. Top part is missing the middle screw mount to keep it compatible with 3d printing. but the threaded inserts are holding perfectly fine.
Because of the long and thin nature of parts I suggest you to print it in silent mode.
The model is a system of stackable boxes designed to hold and organize lock picks and tensioners. Magnets are used to retain the contents and to hold together the boxes and lids.
The size of the boxes was determined by my requirement to offer space for 5 MOKI picks (they are quite long). Different box versions accommodate different types of picks. I am open to create more box insides for other types of picks, but I do not own them for testing.
Lids are designed in a way that boxes can also be stacked on top of them. Some have the Lock Pickers United (LPU) logo and text embossed and look good when printed with switching color for the upper layers.
4x4mm cylinder magnets are used for the stacking magnets (8 per box, 4 per lid). 4x2mm cylinder magnets are used for the inner magnets (number varies between box versions).
A modular 3d-printable mini rack system. Perfect for organizing SBCs, mini PCs, small switches, power hubs, etc. Fully customizable in OpenSCAD. Everything, from the dimensions of the rack, to the roundness of the corners, can be modified with a simple code change. Designed to be printed at home with conventional FDM printers. Requires minimal supports when printing, and final assembly needs only a few easy-to-source parts. No cage nuts. Sliding hex nut design for the front rails allows one to easily mount items, without dealing with cage nuts. Individual racks can be easily stacked and fastened together. Mix and match different color and design combinations!
A lamp to look like your cat when your cat is looking like a lamp.
Phineas Gage became the center of a landmark neuroscience case when an explosion forced a red-hot tamping iron through this railroad foreman’s brain and skull. He survived, but reportedly suffered a personality change. This was the first evidence suggesting that the frontal lobe of the brain was linked to one’s personality. A more complete story is hosted at the website of the Warren Anatomical Museum at Harvard Medical School, which happens to be the current home of the original skull.
This work is a derivative of the CT scan made of the Phineas Gage Skull as discussed in The Tale of Phineas Gage, digitally remastered (Ratiu, P et. al., 2004), and is being shared with the kind permission of the Warren Anatomical Museum at Harvard Medical School’s Countway Library.
This model is also being shared at Thingiverse: http://www.thingiverse.com/thing:1417528