sudo-discuss

sudo-discuss@sudoroom.org

6 participants
7255 discussions

by Marc Juul

It turns out that sudo room suddenly has $8,600 in bitcoin! How did this happen? I don't know! I think we should immediately sell at least enough to pay our debt to Omni. Any sudo members who think we shouldn't just sell every single bitcoin right now while the price is high? -- marc/juul

7 years, 5 months

2 Studio/Workshops available in West Berkeley (fwd)

by Jake

---------- Forwarded message ---------- Date: Fri, 4 Aug 2017 14:20:58 -0700 From: "(-pEEf-)" <peef(a)mindfart.com> To: Jake <jake(a)spaz.org> Subject: 2 Studio/Workshops available in West Berkeley Excellent location and quiet spaces. Across the street from OSH Hardware and Berkeley Bowl West, and on the same block as Discount Fabrics, The Shipyard and Urban Ore, as well as easy street parking and access from I-80. Safe industrial west Berkeley neighborhood right on the border with Emeryville and Oakland. Ideal uses are art, electronics, office, etc. No heavy fabrication please, but light is ok. We want to avoid anything creating lots of noise or fumes. Optional access to large open 2-story area for occasional projects with loading dock. We have blazing-fast gigabit internet with symmetrical pipes, so can be a good choice for big data, such as video production. 24 hour access permitted, but must respect nighttime quiet. Living in either space definitely not permitted. First space is semi-open 21' x 13' with 2-story ceiling and large amount of natural light. Has existing workbench and plenty of power (240v/120v). $390 / month including utilities (reasonable electrical use, internet, trash). (Surfboards not included!) Second space is 18' x 15' in a very private location on the second floor. Has openable window overlooking Ashby. Only 120v electrical. $490 / month including utilities (reasonable electrical use, internet, trash). The desk and drafting table pictured are included, but can be removed if desired. (sorry, the dressers are not included). Please email for details or to arrange a visit!

7 years, 5 months

Does anyone have “double conductive” copper tape?

by Cere Davis

…Where the adhesive is conductive. I just need to have a small piece. I have some on order but have a time pressed project I want to move forward on. Thanks, Cere -- *Cere Davis* Science-Art/Kinetic Sculpture CereDavis.com @ceremona <http://Twitter.com/Ceremona>

7 years, 5 months

Moar (useful) SMDs you say?

by Morgan Allen

Picking up several boxes of surprisingly well organized, not predominantly R/C smds. Anyone around to help me unload shortly?

7 years, 5 months

Re: [sudo-discuss] Moar (useful) SMDs you say?

by Morgan Allen

Tantalum! On Aug 2, 2017 7:42 PM, "Morgan Allen" <morganrallen(a)gmail.com> wrote: On Aug 2, 2017 7:19 PM, "Morgan Allen" <morganrallen(a)gmail.com> wrote: > Picking up several boxes of surprisingly well organized, not predominantly > R/C smds. Anyone around to help me unload shortly? >

7 years, 5 months

solenoid wanted for sudoroom circuitboard CNC machine

by Jake

does anyone on this list have a solenoid? something that can pull a pound or two of force, from a distance of 1/4" or more, ideally. 12-24 volts would be great, although we could do 120V if necessary. thank you -jake On Wed, 2 Aug 2017, Alexander Papazoglou wrote: > Awesome! > > Any response about the missing solenoid? The one they sell as a replacement > part is pricey ($210). > > What ended up being the issue we were having with the steppers? > > Alex > > > 2017-08-02 1:06 GMT-07:00 Jake <jake(a)spaz.org>: > >> after you guys left i got both X and Y axes working properly, in the >> correct >> direction, and the endstops too! now i was even able to home it! >> >> here's the repo: >> https://github.com/sudoroom/Marlin/tree/quickcircuit >> >> marlin can be uploaded with regular arduino, it's an arduino mega 2560 >> >> we still need to enter the correct values for stuff like >> DEFAULT_AXIS_STEPS_PER_UNIT >> DEFAULT_MAX_FEEDRATE >> DEFAULT_MAX_ACCELERATION >> >> although really only the first one is necessary. >> >> then we need to either find a solenoid or use this servo to do the Z axis, >> and >> configure marlin to control it appropriately from a Z command or whatever Z >> instruction gets produced by stuff like PCB2GCODE >> >> -jake >> >

7 years, 5 months

quick circuit 5000 is almost working

by Jake

after you guys left i got both X and Y axes working properly, in the correct direction, and the endstops too! now i was even able to home it! here's the repo: https://github.com/sudoroom/Marlin/tree/quickcircuit marlin can be uploaded with regular arduino, it's an arduino mega 2560 we still need to enter the correct values for stuff like DEFAULT_AXIS_STEPS_PER_UNIT DEFAULT_MAX_FEEDRATE DEFAULT_MAX_ACCELERATION although really only the first one is necessary. then we need to either find a solenoid or use this servo to do the Z axis, and configure marlin to control it appropriately from a Z command or whatever Z instruction gets produced by stuff like PCB2GCODE -jake

7 years, 5 months

Sourcing <= 50 micrometer ETFE film

by Marc Juul

I'm starting to play around with electrowetting (specifically the OpenDrop) and I'm having trouble finding a source for extruded ETFE film of a thickness of at most 50 micrometer. Any ideas? Anyone have experience with ultra hydrophobic coatings or spin coating? -- marc/juul

7 years, 5 months

Fwd: Join us for Microscopy 101 & 401 class at CCL Sat morning!

by Patrik D'haeseleer

*Join us for our Microscopy meetup tomorrow morning at CCL <https://www.meetup.com/Counter-Culture-Labs/events/241864024/>! *We'll have something for newbies and experts alike... We'll give a tour of the microscopes we have available at CCL, show you which one to use for which purpose, how how to use them, and which ones to prioritize for repair. Feel free to bring in your own scope if you have one, and we'll be happy to teach you how to use it (and/or diagnose what's wrong with it...) For the microscopy experts, we'll also go over the fancy super-resolution STED microscope we've just been donated by BioCuriuous! This kind of equipment would normally start in the $200K range. A dedicated team at BioCurious spent more than a year building this one from scratch <https://sites.google.com/site/biocuriousmicroscopewiki/>, starting from the microscope engine out of a donated GA IIx DNA sequencer - a piece of machinery that probably cost well over $500K itself when it was new just a few years ago. A truly unique piece of equipment. STED microscopy <https://en.wikipedia.org/wiki/STED_microscopy> is one of the techniques used to break the diffraction limit in optical microscopy, allowing visualization of subcellular structures that were previously only accessible using electron microscopy! We are looking to build an expert user group around this new instrument, so come join us and help us get it up and running to do some awesome science with it! Patrik

7 years, 5 months

bicycles and parts gathering in sudoroom

by Jake

there is a bicycle frame without wheels, a fender, and five wheels and three tires floating around sudoroom, as well as two bicycles that do not belong to anyone who is here right now. I don't think people should be using sudoroom as a place to store their vehicles, and large projects like bicycles should not be stored here except for very limited situations like a project that takes more than one day. People have been working very hard on cleaning up the space and the electronics waste pile is huge. It will be cleared out soon and I hope we can deal with the bicycles too, and then we can start looking at other large items like the embroidery machine and juki sewing machine table, and get those out of here. If anyone knows whose bicycle frame and wheels these are, or whose whole bicycles these are being stored here, please ask them to take them somewhere else when they're not visiting sudoroom. what do people think of that? -jake

7 years, 5 months

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