Freeside Atlanta

This Week at Freeside Tuesday [7:30p]: Open House, Public, Free. We host this meeting every Tuesday so that people can check out the space, chat with members of the organization, and get together to plan projects, events, and classes. http://www.meetup.com/Freeside-Atlanta/events/111247782/ Tuesday [8:30p]: Introduction to Basic Electronics, Public, Free. Chris Moore and Wayne Salhany explain basic electricity and electronics concepts that you can use in your next project. http://www.meetup.com/Freeside-Atlanta/events/111334442/ Friday [8a-6p]: Telecommute from Freeside, Members-Only. Members, come join your other telecommuters at Freeside and “work” remotely. Coming Up Next at Freeside Please note that Analog Game Night moved, due to a schedule conflict! Analog Game Night will resume to its regular schedule of first Wednesday of the month starting in May. 2013-APR-10, Wednesday [8p-11p]: Analog Game Night, Public, Free. Come get your board

Last year for Alchemy , we decided to launch a really ambitious art project on a really short timeline. It almost didn't get done, but we were able to get it out just in time... and it worked! Ferris, Abigail, and Robin playing with the bubble generator Our project was to build a different kind of art car. Alan got the idea to build an Off Road Wheelchair for our friend Robin, who is an anthropologist and a disability advocate, so that she could get around these outdoor festivals to enjoy all of the crazy awesome stuff that happens there. We did the first round of fundraising at the Alchemy Art Fundraiser  ( FB event link here ) and afterwards Alan, Joy, and Robin set up a second fundraiser at Freeside. Once they raised the money (which still had us on a razor-thin budget), I picked up the project from there and managed the planning and build. As it turned out, I was in way over my head. The idea was this - Robin had a really hard time getting around at these events an

Tuesday [5:30p]: CNC Build Project, Public, Free. Freeside veterans, Preston and Eldon, will be leading this project to assemble and tune a smaller CNC for high-precision work, then design and build a full-size 4' x 4' CNC mill for the space as well. http://www.meetup.com/Freeside-Atlanta/events/109131302/ Tuesday [7:30p]: Open House, Public, Free. We host this meeting every Tuesday so people can check out the space, chat with members of the organization, and get together to plan projects, events, and classes. http://www.meetup.com/Freeside-Atlanta/events/109154682/ Tuesday [8:30p]: Introduction to Basic Electronics, Public, Free. Chris Moore and Wayne Salhany explain basic electricity and electronics concepts that you can use in your next project. http://www.meetup.com/Freeside-Atlanta/events/109104052/ Thursday [7:30-9p]:  Building Interfaces between Computers, $10.  Free for Members. Chris Moore and Wayne Salhany help you design and build a "stack"

Tuesday [5:30p]: CNC Build Project, Public, Free. Freeside veterans, Preston and Eldon, will be leading this project to assemble and tune a smaller CNC for high-precision work, then design and build a full-size 4' x 4' CNC mill for the space as well. http://www.meetup.com/Freeside-Atlanta/events/106771092/ Tuesday [7:30p]: Open House, Public, Free. We host this meeting every Tuesday so people can check out the space, chat with members of the organization, and get together to plan projects, events, and classes. http://www.meetup.com/Freeside-Atlanta/events/106718942/ Tuesday [8:30p]: Introduction to Basic Electronics, Public, Free. Chris Moore and Wayne Salhany explain basic electricity and electronics concepts that you can use in your next project. http://www.meetup.com/Freeside-Atlanta/events/106481602/ Thursday [7:30-9p]: Building Interfaces between Computers, $10.  Free for Members. Chris Moore and Wayne Salhany help you design and build a "stack"

Have you been itching to donate things to Freeside, but you’re not sure what we need?  Have you been looking for volunteer opportunities to use your awesome skills?  This monthly post shall be your guide, henceforth! Items we need, in no particular order: Paint (brighter colors especially, not black/grey/white): we are painting an internet meme explosion mural in the front bathroom, and Carrie needs more paint. Paint (dark, black, matte): for shrouding the stage in the darkness. Printer ink for the HP L7680 4+ port NIC card for rack system, or full system: we are trying to build a router to create subnets, see Alan or any IT staff person for details. Mounts for rack systems: stacking the pizza boxen on top of each other just won’t do. Lumber and other build-out materials: ask about specifics, but the two main projects that could use some lumber are for the electronics lab benches and for improvements to member storage. Small to Medium plastic bins: We can start subdividing or r

Tuesday [5:30p]: CNC Build Project, Public, Free. Freeside veterans, Preston and Eldon, will be leading this project to assemble and tune a smaller CNC for high-precision work, then design and build a full-size 4' x 4' CNC mill for the space as well. http://www.meetup.com/Freeside-Atlanta/events/106771092/ Tuesday [7:30p]: Open House, Public, Free. We host this meeting every Tuesday so people can check out the space, chat with members of the organization, and get together to plan projects, events, and classes. http://www.meetup.com/Freeside-Atlanta/events/106718942/ Tuesday [8:30p]: Introduction to Basic Electronics, Public, Free. Chris Moore and Wayne Salhany explain basic electricity and electronics concepts that you can use in your next project. http://www.meetup.com/Freeside-Atlanta/events/106481602/ Wednesday [8p-11p]: Analog Game Night, Public, Free. Come get your board and/or card game on! http://www.meetup.com/Freeside-Atlanta/events/106083922/ Friday [8a

I've been busy working on this project since I last wrote about it. I have a new PCB designed and built up and another that has since been designed but not yet built. Designing electronics is a process. The first design I had built had an analog mux on it that I was using to push all the current sense signaling to a few ADCs on the board. Later designs needed those pins on the MCU for other purposes so I added an 8 channel ADC to the design and removed the mux all together. I then found that the ADC was too fast to measure the current in a useful way because the PWM I use to adjust the current would give the ADC values that were either 0% or 100% instead of a working average. I knew this going in, but assumed I'd be able to get a reliable average in a reasonable amount of time. For whatever reason though, it took about 300 samples per channel to get an reliable average value. Multiply that by 8 channels and then assume a single byte to store the value and you can see that it co