BCL Report: March 18, 2011 (the math)

We were a few people short of a full crew (Michelle was sick, Danielle was away, Rosina was on the line, and it was Cristina’s birthday), but Josh, Kevin, Hiba, Karlyn and I still made the most of our Friday night studio collaboration spectacular by putting some focus on our large-scale letters project for CAFKA.

With the semester wrapping up in just a few more weeks, we’re really looking forward to having a bit more time and brain space to work on all of these projects.

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New LCDs and Serial Ports and some Max/MSP for good measure

I haven’t posted on this project for a little while, partially because of the preparation for the ongoing Save the City project, and partially because the little time that I’ve had to work on this has only resulted in small increments. So, I figured I would wait until I had some more significant updates to make to post, and here they are.

Basically, I’ve been working on a couple parts of the project. I’ve been updating a Max/MSP/Jitter project that BCL had previously used for our projection performances to try to automate some of the scaling of text depending on what the input is, while also continuing with the Arduino and LCD integration.

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Math, Markers, and Measurements + Eric’s micro-documentary


We spent last night watching a rough cut of some of Eric’s ongoing micro-residency project, did a lot of measuring, used Google Earth, did some math, drew some diagrams, and brainstormed a new project (because Cristina wants to sew, a lot).

With the semester basically over now, we’re hoping to wrap up a couple things before the new year before starting on some bigger new projects in the new year, which you will hear about soon!

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Learning Electricity

trying to figure out how much resistance 200 10mm LEDs might need

Spent last night around the table with my brother, the high school physics teacher, trying to figure out how one might calculate the resistors and type of battery that would be needed in a circuit powering 200 LEDs.

I know there are some calculators online, as Mike had suggested earlier, but because I really don’t know the first thing about electricity, I think I was probably confusing the problem… as well, our Internet connection was down, so we were googless. However, as you can see above, we eventually came out with the right number.

Then I found this formula earlier tonight… 
(SupplyVoltage – LEDForwardVoltage)/ NominalLEDCurrent = ResitorValue

Then I ordered a whole bunch of 270 ohm resistors and a 9v wallwart from Jameco to hopefully get these LED projects moving forward.