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New violin makers community August 27, 2018

Posted by GuySoft in music, open source.
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Hey all,
So I was going to post here about a violin I 3D printed and built, and then realised that this is a community waiting to happen. So I created a discourse forum called violinmakers.org. A place for people to share knowledge on how to build electric violin cellos and anything in between.

Electric violins today are usually heavier than their acoustic counterparts, 3D printing and carbon fibre makes it possible to print lighter violins with complex parts. Instead of spending a lot of time carving them in to heavy wood. The need is growing since nearly all music today is amplified.

The challenge is, that while modern instruments have been developing effects and new sounds, acoustic violins have been acoustic for the past 400 years. The years perfected acoustic violins, but this specialisation does not fully translate to electric violins, furthermore it makes it hard to top the rich sound of an acoustic. After all it takes more than a decade of practice to become an “ok” violin luthier.

Recently we achieved the ability to rapid prototype, plus we can learn from other instruments, such as electric guitars. Which have been creating amazing sound modelling techniques. With them I hope we can create new instruments. This is why I created the community.
There is already quite a long list of designs out there, shared in thingiverse mostly, but with little documentation on how to build them, and there is a lack of tests with pickups.

Pickups are am issue

Today, all available violins in the market use a piezo based pickup, this is because piezo pickups sense sound, they are mechanical. They were naturally chosen because they deliver a more acoustic sound, called electro-acoustic. Electric guitars use magnetic pickups, which have a more clear signal from the strings, but loose the acoustic sounds, which is compensated with amps and pedals. I have been playing with those too on violins, it might work. I know it was tested and abandoned around early 2000’s, but things have changed since. There are many more ways to experiment.

I hope that this forum will grow to be a larger community. At the moment I am the only one posting stuff, but I can already see traffic.

Comments, threads and more are welcome, and encouraged in the forum here, because the traffic should go there.

OctoPi – 3D Printer Web Server Distribution for the Raspberry Pi August 4, 2013

Posted by GuySoft in diy, Electronics, Hamakor, ITU, linux, open source, programming.
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OctoPi logoOctoPi logo

OctoPi logo

Update2: New mirror opened after Dropbox suspended my public links due to traffic. Download the image here.

Update: Dropbox have suspended my Public links due to “extreme traffic activity” so in a few hours I should be syncing the image to other mirrors. Other hosting would be appreciated!

Hey all,

I am happy to say that I am a backer of the Rigidbot 3D printer, (which you can pre-order already), I am expecting it to arrive in August. In the meantime, I have ordered a Raspberry Pi to play with and started visiting a local maker community known as XLN.

This led me to find a really cool project called OctoPrint, which lets you control 3D printers using a Raspberry Pi over a web interface, however people were not installing it on their Pis because there was no out-of-the-box solution. Today I am happy to announce that a solution is here! I give you Octoprint + Rapberry Pi = OctoPi. A raspberry Pi distribution which runs OctoPrint out of the box, with support for time-lapse video on webcams (there is also an experiential version in the works that supports streaming from a raspberry Pi camera).

Just dd the image on to an sd card, put the sd card in your Pi, boot it and connect to the network and printer, then point your browser to http://octopi.local and you have a fully functional 3D printer server! Plug in a webcam and can also make time-lapse videos. Just as simple as that. More details for windows users can be found on OctoPrint’s download page.

The OctoPi image can be downloaded here.

The sources are available on github, and could also serve as a framework to automatically build other Raspbian-based Raspberry Pi distributions.

Pull requests, forks and issue reports are welcome. Also it would be helpful if someone could help me mirroring, since currently the images are hosted on my Dropbox account.

Thanks to Gina, the developer of OctoPrint, for such a great software! PlugWash on #raspbian for the build tips and Richard Mitchell for the last touches to OctoPi’s logo.

Share and enjoy,

Guy