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Motobrain: Interesting Investigation Concludes

I've had a problem with the way Motobrain calculated current flows for quite some time. Basically it always read a little higher than I expected it to if the textbooks are to be believed. Furthermore, one half the board always read a about 10% higher than the other half. It is not very unexpected that the "textbook" calculation and real life are a bit out of sync. Still, I wanted to know why the error was inconsistent between the two halves of the unit. That part was a bit unusual. Normally, the way you go about solving an issue like this is to exclude stuff until the problem is gone. First, I excluded the Power board, the PCB with all the high current flow, heavy copper, and power transistors (shown right). I did this using the test jig (right, below) I designed to test all the Motobrains that come out of the factory. The MCU board (the board with the sensors, microcontroller, and Bluetooth radio) plugs into the jig and is given a series of test signals to confi

Props and costuming - Building an Ultron helmet

Hello, Freeside readers, and welcome to my first blog post! My name is Michelle Sleeper, I am a prop and costume builder in Atlanta, working primarily out of Freeside's space. I have been building costumes and plastic space guns since 2001, and have been a member of Freeside since 2013. My most recent major project was to upgrade a costume I built last year of the Marvel comic's character, Ultron. The costume owner wanted a new and improved helmet, made of cast resin and full of all sorts of lights. It was a big and ambitious project, and I was very excited to get started. Here's how we got there. From the outset we decided that we wanted the master sculpt to be 3D printed - but for those of you familiar with 3D printing, you know that extremely large prints are difficult if not impossible to produce. Most often, you will have to break your model up into many different segments, which you then assemble like a 3D jigsaw puzzle. We opted not to do that, and ins

The JAM: Joy's Art Machine (First Build Recap)

Background :  The JAM (Joy's Art Machine) is a machine that distributes art. This project was fully funded by the  Alchemy  community. We are on track to collect somewhere between 200-300 pieces of art to distribute, including works by Catlanta and Evereman. We are actively collecting works of art, so if you're interested in contributing, you can email  Joy  at  joyogozelec@gmail.com . The JAM explores two of the 10 core Burning Man principles: Decommodification and Gifting. We express Gifting by distributing art through the machine. Gifting trees are a familiar sight at Burns, but suffer from accumulating trash or trinkets. By gifting art (a gift in itself) we create a sort of on-demand gifting tree. We express Decommodification by not allowing the JAM to accept money. Instead, art is distributed by the machine on a timer. The machine lights up, and you push a button to receive art. If you're interested in learning more about the project or want to get involved, check out

JAM: Joy's Art Machine - Design Meetup (Recap)

Background :  The JAM (Joy's Art Machine) is a machine that distributes art. This project was fully funded by the Alchemy community. We are on track to collect somewhere between 200-300 pieces of art to distribute, including works by Catlanta and Evereman. We are actively collecting works of art, so if you're interested in contributing, you can email Joy at  joyogozelec@gmail.com . The JAM explores two of the 10 core Burning Man principles: Decommodification and Gifting. We express Gifting by distributing art through the machine. Gifting trees are a familiar sight at Burns, but suffer from accumulating trash or trinkets. By gifting art (a gift in itself) we create a sort of on-demand gifting tree. We express Decommodification by not allowing the JAM to accept money. Instead, art is distributed by the machine on a timer. The machine lights up, and you push a button to receive art. If you're interested in learning more about the project or want to get involved, check out