http://dap.cooper.edu/ 2026-04-29T10:51:37-04:00 http://dap.cooper.edu/ http://dap.cooper.edu/lib/images/favicon.ico text/html 2012-09-12T10:35:18-04:00 http://dap.cooper.edu/doku.php?id=start:projects:circuit&rev=1347460518&do=diff Links to background material and other sites Back to Home Page Cooper Union Open Source Laboratory text/html 2011-09-26T17:25:53-04:00 http://dap.cooper.edu/doku.php?id=start:projects:cnclasercutter&rev=1317072353&do=diff Problem Statement * Laser cutters are becoming more prevalent in the design and prototyping industries for their ability to quickly cut two dimensional shapes from various materials. However, current standalone systems are not affordable solutions for achieving these goals. CNC mills and laser cutting systems share common sub-systems. Our goal is to save space and reduce costs and further CNC machine functionality by designing and retrofitting a laser system into existing milling machines. Ul… text/html 2011-01-25T13:38:56-04:00 http://dap.cooper.edu/doku.php?id=start:projects:coding_group&rev=1295980736&do=diff October, 20, 2010 * Wiki is live! * Merged with Electronics Group text/html 2011-01-25T13:52:50-04:00 http://dap.cooper.edu/doku.php?id=start:projects:cooling_group&rev=1295981570&do=diff December 4, 2010 * Unordered List ItemCardboard mock-up made * looks larger than expected * move fillport hole? * how does the top swing out? * rubber feet on bottom? Temporary location for pictures November 29, 2010 * HWLabs SR1 360 Radiator arrived * Swiftech MCP-655 Pump (Laing D5) arrived * (Thanks to Jshay @ [H]ard Forums) text/html 2011-01-25T14:06:13-04:00 http://dap.cooper.edu/doku.php?id=start:projects:electronics_group&rev=1295982373&do=diff State of the Group * Final paper word document is on my dropbox. If you're not a member of the shared folder, email me (Jordan). * We got the $2000 macro code for free! Hooray! Current Method * Extract the 5 “Additional Axis” from the 2nd serial port as 4800 baud data streams with an Arduino. * Arduino generates PWM signal for laser power supply based on data read from the CNC. * Hook up digital switches and analog sensors to Arduino input pins. (Eg, temp sensors, door switches) text/html 2011-07-27T15:59:24-04:00 http://dap.cooper.edu/doku.php?id=start:projects:electrospinner&rev=1311796764&do=diff [ ] Introduction Electrospinning is a technique that is used to produce nano and micro scale fibers which have various applications in fields such as biomedical engineering. A syringe filled with a polymer solution is mounted on a syringe pump, which slowly pumps out droplets of solution. A strong electric field is set up in an enclosure using a high voltage power source. The electrostatic forces produced by this field propel the droplets from the tip of the syringe, spinning it into fibe… text/html 2011-01-25T13:54:57-04:00 http://dap.cooper.edu/doku.php?id=start:projects:enclosure_group&rev=1295981697&do=diff Group Minutes Please post these here: November 9, 2010 Continued enclosure design: * Using a hose barb through the aluminum plate for the water connection * This could reduce the chance of coolant leakage. Overall the new features that were mentioned as being required are: text/html 2011-07-28T15:18:44-04:00 http://dap.cooper.edu/doku.php?id=start:projects:hydrostatic&rev=1311880724&do=diff [ ] In tissue engineering, it is often desirable to be able to cyclically load cell cultures under hydrostatic pressure. To fulfill this task, researchers at Mount Sinai Medical Center have designed and built a hydrostatic pressure loader mostly out of off-the-shelf parts. While this device works quite well, it has the limitation of requiring an Instron tester to actuate it. Our goal at Cooper Union is to design a new method of achieving similar loading conditions without being tethered to exp… text/html 2011-01-25T14:19:05-04:00 http://dap.cooper.edu/doku.php?id=start:projects:interface_group&rev=1295983145&do=diff Group Minutes Please post these here: October, 20, 2010 * Presented on possible beam redirection mechanism. October, 21, 2010 * Decided that we would indeed be using the Haas VF0 located in the student machine shop * Talked to Mike Schnaff about the types of tool holders the larger the slant of the holder, the more stable the tool is: categorized into CAT40/CAT50/CAT60 * Decided to use the L-shaped mirror mounting * Considered whether to purchase an additional tool holder and then… text/html 2013-01-21T14:47:35-04:00 http://dap.cooper.edu/doku.php?id=start:projects:mechanical_loader&rev=1358797655&do=diff The mechanical loader was designed by Keith Yeager of Columbia University for repeated compressive loading of biological tissue samples. Its compact, standalone design allows it to be run inside of an incubator, so that the sample's environmental conditions (temperature, humidity, sterility) can be closely controlled. text/html 2012-10-16T09:50:28-04:00 http://dap.cooper.edu/doku.php?id=start:projects:mechanical_loaderdale&rev=1350395428&do=diff The Cooper Union Open Source Mechanical Tester is used to measure position and load on a sample undergoing standard tests. It is designed with the testing of tissue properties in mind, but can be customized for other uses. Check out the tests page for video and sample test results. text/html 2011-01-25T14:20:38-04:00 http://dap.cooper.edu/doku.php?id=start:projects:optics_group&rev=1295983238&do=diff Group Minutes Please post these here: December 1, 2010 * Optics that were ordered came in * Tested optics with laser pointer * Mounted optics in proper mounts * Found focal length of lens October, 20, 2010 * Found that we needed a zero degree shift mirror and ninety degree shift mirror to achieve optimal beam geometry * Looked up prices on ebay for mirrors * Looked up lenses for CO2 lasers on ebay and found that ZnSe is most prevalent * Found prices for ZnSe lens on ebay * … text/html 2015-05-08T00:20:18-04:00 http://dap.cooper.edu/doku.php?id=start:projects:portable_incubator&rev=1431058818&do=diff Introduction The intersection between the biological sciences and engineering has great potential to solve many medically-relevant issues. Currently, research for these issues demands advanced testing systems for biological materials. One such piece of equipment used in biological engineering research is the bioreactor. A bioreactor may refer to any engineered device or system that sustains a biologically active environment. text/html 2011-01-25T14:22:12-04:00 http://dap.cooper.edu/doku.php?id=start:projects:ventilation_group&rev=1295983332&do=diff Group Minutes Please post these here: October 20, 2010 * Presented on ventilation system. * Need to work out honeycomb, surface ventilation. November 3, 2010 * Presented basic concept of ventilation system * Need to work on these details * Method to connect existing ventilation port * Size of the honeycomb ( preferably greater than table dimensions) * Rulers on the sides of ventilation box * Method to fasten the box to the stage * Ease of access to clean or replace the …