Water Light Graffiti

buildscc | 10 Aug 2012 | | projects

Chris Woodall and Dan Gastler are building a water light graffiti wall, with LEDs and water sensors! They were both inspired by this French dude’s project and decided to make something similar/exactly like it. video and links to some other stuff

Trying To Do Science

Experiment 1: Water + Copper Tape

Experiment 2: Controlled Measured Sized Pads on a PCB

Experiment 3: Hell, lets put an LED on it

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Beowulf Cluster Build


One of the physics research groups here at BU has donated the remnants of their old Beowulf cluster to us. This amounts to 23 nodes (specs to follow shortly) and some assorted cabling and power supplies. We also have plywood to mount them on, already cut to slot into a disused rack.

Power Distributor

The physics department was using boards custom-built by BU in order to split the power output from one power supply to three nodes. We currently have one of these boards, and will be contacting the department that made them in order to acquire more.


Each plywood shelf will be able to comfortably fit 3 nodes, a power supply, and a power distributor. We need to consider whether to mount the components directly to the board, or to purchase threaded spacers similar (or exactly like) motherboard posts found in a normal PC.


We would like to run/manage all nodes from one of the servers currently in our rack. Most of the ways I’ve seen for doing this require a separate root partition on the server for every node to mount via NFS on boot. We need to research methods for having many nodes mount one shared NFS root directory on boot, or else this will be a pain to add/subtract nodes from.


Hardware Build (Mounting components on plywood and throwing them into the rack) will tentatively happen the weekend of March 26-28. Contact Kyle if you’re interested.

Software Setup: ???


Meeting Minutes for 2012-09-12


This is the First Meeting

Officers introduced themselves

New and current members raise hand for interest areas

- mechanical, biomedical, electrical, computer engineering, programming
- rockets, robots, sound systems, arduino hacking,
- video game programming, graphics, network security, app development
- lockpicking

Introduction to builds

  • builds is the place for you to learn that. we exist to facilitate learning, especially through collaboration. the way builds works:
    • meetings: weekly, wednesdays, 6:30. everyone gets together to talk about events and current projects. this meeting not representative, more like an orientation.
    • events: hackathon, indiegamefest, hackny, csaw
    • the room: open 24/7. if you stick around, we’ll give you swipe access; right now the door will always be unlocked. come in and work in between classes, stop by to check out the tools. After classes end we can use power tools, so on any given night you’ll find people in here working. we also are going to start unlocking classrooms next door to use as middle of the night homework hubs.
    • projects: if you have a project, you can propose it. first of all you just pitch it to the group at a meeting to see general interest. if it’s cheap, doesn’t need a lot of people, cool, start working on it right away– if it’s big, we require you to submit a project proposal (which is great for learning how to write design docs) to the officers to review, get funding, etc. then becomes project w/ weekly meeting times etc. time at the end for new pitches.

Projects for the meeting:

  • Video Game Collective
  • CSAW
  • BUILDSbot
  • Multitouch


  • VGC
    • level 1: no game programming experience: Gamesalad
    • Level 2: pygame
    • Level 3: c++ w/ john & jeff
  • BUILDSbot meeting :
    • project planning
    • design docs