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Archiv 'Interesting things from all over the world'

`17.Apr.2022` Hackster	Open Source 3D printer: SLS4All Every now and then we report on do-it-yourself projects such as making your own joystick using a 3D printer. Not bad, you might say, but what's the point if I don't have a 3D printer? Especially not one that is even remotely affordable! While not amiga-inspired, Tomas Starek may have had similar thoughts when he started his DIY project of his own affordable 3D printer. However, as he tells us, he was so surprised by the positive reactions from around the world that he decided to document his 'Open Source' project thoroughly and comprehensibly. He chose the SLS printing process for this. As the portal hackster.io reports, there are currently no consumer SLS 3D printers on the market. The process involves beaming a laser at a bed of powdered polymer, which thereby melts it and turns it into a solid. As with other forms of 3D printing, the layers build up to form a three-dimensional object. Compared to other processes, it offers the advantage of generating bridges and overhanging geometry, he said. The print chamber is 175 X 175 X 200 mm in size. For control, Starek chose a combination of BigTreeTech 1.4 Turbo control board and Raspberry Pi 4B, both running Klipper firmware. The main goal of his project is to use the most "affordable" (initially: cheap) parts possible. The should be able to create complex prints and be user-friendly. We asked the developer what costs should ultimately be expected by an interested user who wants to build the 3D printer himself: he estimates about 2500 euros. At a later date, he could also imagine selling the printer as a finished, commercial product or as a kit for assembly. For now, however, it is a matter of finishing the development of the printer. And the current status looks like this: DESIGN: Generic & Fusion 360 design 100% Hardware Parts fabrication and Build: Frame & Moving Parts 98% Electronic equipment installation: Laser, Galvo system, step motors, heaters 100% Firmware And Software development: FW customization & F-e development 75% Testing: Partial Tests, Complex testing, 3D printing 65% Documentation: F3D, DXF & STL files, GitHub Repos, etc... 50% (dr) [News message: 17. Apr. 2022, 06:36] [Comments: 0] [Send via e-mail] [Print version] [ASCII version]
`16.Apr.2022` a1k.org (Webseite)	Hardware hack: A fifth audio channel for the Amiga In an older blog entry, which can only be found in the web archive, a Norwegian describes how he uses the FBAS signal of his Amiga to output a fifth audio channel in addition to the four existing (stereo) channels. He uses the fact that bright and dark pixels are transmitted as different voltages on the video cable. A video demonstrates the principle in action. (cg) [News message: 16. Apr. 2022, 22:29] [Comments: 0] [Send via e-mail] [Print version] [ASCII version]
`18.Feb.2022`	Fundraiser: Preserving Commodore documents Two days ago Dave McMurtrie of the Commodore International Historical Society and Brian Bagnall, known for his books about Commodore's company history, started a fundraising campaign to finance the retrieval of Commodore documents from a basement archive in Toronto. Brian Bagnall writes about this: "These documents were gathered in 1965 and contain information about Commodore’s co-founders, including three days of interviews with Manfred Kapp and five days with Jack Tramiel. There are corporate logs (called minute books) and financial documents that can uncover some strange paths the company took, such as a foray into the hotel business in the Bahamas, and the unique story behind Commodore Jamaica. And much more. In 2020, both Dave McMurtrie of the Commodore International Historical Society and Brian Bagnall, author of Commodore: A Company on the Edge, independently requested documents from the archives. However, the archives were shut down due to the crisis and only reopened in late 2021. Now we have been able to jointly request scans of the documents, but it comes with a steep price. The examination interviews with Tramiel and Kapp amount to 570 pages. At over a dollar per page that the archivist charges, this adds up fast. We want to unearth more than just the examination interviews, we want the thousands of other pages of business records, financial documents, sworn testimony, and evidence. What it comes down to is we need your help! The best way to preserve these documents before they are lost to time is to back them up digitally and disperse them across the Internet. We will upload the documents to the Internet Archive so they have a permanent and reliable repository for future generations to explore." Accordingly, one page costs around one US dollar. The initiators had issued the goal of 2000 Canadian dollars, which was already exceeded yesterday with over 3000 donated dollars. Accordingly, Brian Bagnall wrote: "Thanks to everyone for helping us reach our goal in a matter of hours! It was much more than Dave or myself expected. Today we submitted an order for the first batch of 570 pages of interviews and should see the scans within two weeks if all goes well. The next request is a list of documents drawn up by Dave that includes notes from Commodore Jamaica director's meetings, corporate minute books, and some other evidence from Commodore Drycopy in New York. What we find will help guide us to other documents we might want to request after that. With 314 boxes, I don't think the well of documents will run dry anytime soon." (dr) [News message: 18. Feb. 2022, 06:20] [Comments: 0] [Send via e-mail] [Print version] [ASCII version]

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