Michigan Tech Open Source Hardware Enterprise

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[edit] Michigan Tech Open Source Hardware Enterprise

The Open Source Hardware Enterprise (OSHE) will develop open source hardware solutions specifically to address problems of our project partners, while sharing the solutions in the commons. Open source hardware consists of physical technologies designed and offered in the same manner as free and open source software.

Enterprise Team - Michigan Tech Open Source Hardware Enterprise
Faculty Advisor - Dr. Joshua Pearce
Course Number - 
* Open Source Hardware - 82335 - ENT 2950 - L33
* Open Source Hardware - 82336 - ENT 2960 - L33
* Open Source Hardware - 85007 - ENT 3950 - L33
* Open Source Hardware - 85008 - ENT 3960 - L33
* Open Source H'dwe Pre-Capstone - 85011 - ENT 3980 - L33
* Open Source Hardware - 85012 - ENT 4900 - L33
* Open Source Hardware - 85013 - ENT 4910 - L33
* Open Source Hardware - 85009 - ENT 4950 - L33
* Open Source Hardware - 85010 - ENT 4960 - L33
Disciplines Needed - All welcome especially need MSE, MEEM, MTE,  EE, CS, BA, STC

[edit] Spring 2015

[edit] Projects

Prusa i3

  • Status Update: The thermistors are on order and should be the last component needed to complete this printer. Estimated completion date: 1 week after transistors are in.
  • This is our second small scale 3D printer, which we will use to fulfill print orders for customers inside and outside of the university. The printer is nearly done mechanically, but it still needs the electronics wired up. It will also need significant calibration to get the print quality up to our standards. The members working on this project are Lucas Wilder (talk) 11:24, 19 January 2015 (PST), Tabeauch (talk) 13:49, 26 January 2015 (PST), and Mdholt (talk) 14:14, 26 January 2015 (PST).
  • Instructions for the build can be found here: http://reprap.org/wiki/Prusa_i3_Rework_Introduction.


  • The Gigabot is even closer to being finished than the i3. The only thing missing from the machine is the extruder assembly and a large print nozzle to reduce the lengthy print times. This project must be finished by the February 9th deadline. If any parts are still needed, please email Dr. Pearce and copy me on the message. Ian Peoples will be leading the Gigabot team, with Greg Chamberlain and Walker Nelson also working on the project.
  • End of semester update: The Gigabot is in printing condition. We've completed a few test prints, all that is left is a large-scale print.
To the left is the Gigabot's first offical print. We'll adjust a few print settings in the immediate future to improve quality.


  • Progress update (4/24/2015): Router and wifi adapter came in yesterday in order to interface with the beaglebone which still seems to not be working correctly, a new beaglebone might be needed.
  • Progress update(4/21/15):The Lasersaur hardware side of things is 100% complete, all that is left is the software which we are currently working on and should be resolved within a week. Therefore I would say it is at 85% completion with respect to full time cutting without many hiccups. We also need to find or order a nitrogen tank or a small and quiet air compressor for the air assist system. Since these are purchased items that do not require a build they do not add to the completion percentage. We also do not need the air assist as soon as we get the software working because it would be smart to get the motors and switches working properly before using the laser. A location to use the laser is also needed before turning it on.
  • Progress update (2/16/15): Missing parts including mirror mounts, a focusing lens, and CAT5 cable have been ordered. The mirror mounts and focusing lens have arrived and need to be put together to finish the optics portion of the design. The electrical team is beginning the process of connecting all electrical components and interfacing with a computer. Known parts that still need to be ordered include: a laser water chiller. A definitive final location for the lasersaur has not yet been found.
  • This is the open-source laser cutter table that we have been cobbling together since the beginning of the Fall semester. The rest of the parts need to be either located or purchased as soon as possible so that construction can continue. Olin Johnson will be leading the project, with Steven Abramczyk and Andy Schaub also working on it. Once the i3 build is completed, one of the EE students will be assigned to the project to oversee the wiring and controls portion of the build. As always, if anything needs to be purchased, let Dr. Pearce and I know ASAP.

Induction Furnace

  • Progress update (8/1/2015): The induction furnace has come a long way since end of the '15 spring semester. Both software and hardware side of the project has been completed, along with much troubleshooting. Our only trouble currently is the coolant pump; the original one would thermally shut off after ~7 minutes of use. Therefore a new one that has been properly spec'd for the head loss and flow of the system and has been ordered, it should be arriving shortly. After installation of the pump we plan on finding a three phase variable transformer for use in the first use of the system at full power. There has been a low power testing (approximately 90 watts) which proved successful in heating up a steel threaded rod over the span of ~10 seconds.
  • Progress update (4/25/15): The construction of the furnace is nearing completion. All the major parts of the furnace have arrived and assembled into the final forms. The electronics box has been populated with power and control electronics. The radiator has been fitted with hoses and mounted on the case. The 4 transformers used in the circuit have been wound and wrapped with tape. The parts that needed to be machined are arriving back from the machine shop. A fan controller circuit was created to address the issue of the fan making the ATX power supply go into over-current protection. Micro-controller code was coded to monitor the status of the water flow and temperature of components. Pictures were taken of the progress made and attached in the report.
  • Progress update (2/22/15): The coil was shaped early in the semester and measured using a LCR meter to find the inductance of the coil. The capacitance needed to resonate the LC tank circuit in the range of 15-30KHz was then calculated. The oscillator board, and the crucible break detection circuit have been soldered and tested. On the mechanical side, the water-block for cooling the IGBT modules was modeled, parts for the water-cooling and pneumatic were purchased. A housing for the system was prepared, cleaned, and stripped of electronics.
  • This project was commissioned by Dr. Pearce himself. The team made good progress during the Fall semester, and should have the furnace melting down cans by the end of the semester. Patrick Rice is leading this team, with Olin Johnson, Lucas Wilder, Gregory Chamberlain, Walker Nelson, and Nicholas Kasza also working on it.

[edit] Grades

Please update your individual user page with a description of your work along with some pictures. Include links to existing documentation or new documentation, depending on what fits your project. Once this is complete, post a quick link to your user page below this section so that Dr. Pearce can evaluate your work.

Lucas Wilder
Tyler Beauchamp
Olin Johnson
Nicholas Kasza
Andrew Schaub
Steven Abramczyk
Michael Holt
Greg Chamberlain
Walker Nelson
Ian Peoples
Patrick Rice

[edit] To Apply

  • Create a User Account here on Appropedia (see upper right hand corner of page)
  • Post a Digital Resume -preferably with pics of past projects on your user page - or a link to your website.
  • When complete send link of your userpage to Dr. Pearce via email.

[edit] Useful things to read

Sunhusky.png By Michigan Tech's Open Sustainability Technology Lab.

Wanted: Students to make a distributed future with solar-powered open-source 3-D printing.
Contact Dr. Joshua Pearce or Apply here

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