Converting Festo’s flow rate spec to Cv

Festo gives the flow rate through their solenoid valves in terms of “standard nominal flow rate”. What does this mean? How does it compare with other valves on the market?

Here’s a spreadsheet that converts the specified flow rate (which is actually a mass flow rate even though it’s in units of volume/time) into a flow coefficient or Cv. This lets you directly compare the size of the valve to other vendors’ stuff.


Chief Delphi discussion

Press release: Peninsula STEM Gym provides practice opportunities for Hampton Roads youth robotics teams

Intentional Innovation Foundation announces the founding of the Peninsula STEM Gym, a place for student robotics teams to develop competition robots and have real-world engineering experiences that will inspire a lifelong interest in science and math. Establishment of the Peninsula STEM Gym is made possible in part by a generous Community Knights GIFT Grant.

Located in central Newport News, the Peninsula STEM Gym offers local student robotics teams a 2,500 square foot practice area for testing robot functionality against the same field elements as they’ll encounter at real competitions. The facility will enable teams to gain driving practice, discover ways to iterate and improve their robot designs, and become better prepared to compete against other top Virginia teams as well as on the world stage. Four Peninsula student robotics teams, with an average of 20 students each, plan to use the STEM Gym to practice for the FIRST Robotics Competition (FRC) in spring 2019.

By enabling these students to better practice their sport in a STEM Gym, we increase the likelihood that they can “turn pro” upon graduation, entering career fields which reward the communication and leadership skills that they learn through existing mentor-based robotics competitions.

“This is going to fundamentally change our approach to both software development and also drive team practice” says Todd Ferrante, drive team coach of Triple Helix Robotics, the competitive robotics team at Menchville High School in Newport News. “It really is a game changer.” Donald Williams, the head teacher and coach of the Phantom Mentalists, Phoebus High School’s team in Hampton, says: “The students need practice driving the robot to perform well in competitions, just like any other sport. FRC is a sport like any other at the high school level. It is just a sport for the budding engineers, programmers and manufacturing.”

Intentional Innovation Foundation, Inc. transforms students and our community into evangelists for science and technology by providing them life-changing opportunities to experience these subjects as a thrilling, challenging competition. The Newport News nonprofit organization recognizes that developing the future engineering workforce requires a culture shift that makes engineering “cool” again.

Community Knights, Inc. is committed to identifying the needs of small local nonprofit and public school organizations as well as the populations they serve and finding innovative ways to help them meet these needs collaboratively. The nonprofit organization is also dedicated to identifying service gaps for underserved populations within our community and, through the development of a nonprofit incubator, support and educate start up organizations to fill unmet needs within the Virginia Peninsula community.

The Peninsula STEM Gym is located at 11516 Jefferson Ave Unit #2, Newport News, VA 23601.

Those wishing to get involved with the Peninsula STEM Gym are invited to attend the first Open House to be held on Saturday, November 17, 2018 from 2pm to 6pm at the facility.

Community members wishing to contribute financially to the Peninsula STEM Gym are invited to sponsor the purchase of a chair. Task chairs will be grouped around workbenches lining one wall of the facility, providing a comfortable working environment for students to explore concepts in group problem-solving and teamwork. Sponsors of chairs will be invited to attach customized brass name plaques to their chairs at the inaugural open house of the STEM Gym on Saturday, November 17, 2018.

2363 builds a drivetrain

When we recruit new students, one of our favorite lines is, “Nobody who joins the team knows how to build a robot. We’ll teach you.” As an established team, we go to competitions and see younger teams, some of whom don’t have engineering mentors, struggling to learn lessons we have learned the hard way. We see our role in growing FRC as helping those struggling teams become better more quickly, so they remain inspired, and don’t fold.

Last fall our students came up with the idea of producing a series of instructional videos. These would teach our incoming rookies the skills they would need to be productive robot builders. We see this video series, and the ones which will follow, as a tool which can help educate inexperienced students on our own team as well as other teams across FRC.

Video series

Chief Delphi post

Chairman’s Award video 2018

This video was provided to judges as part of our submission for the 2018 Chairman’s Award.  Triple Helix received the Chairman’s Award at the FIRST Chesapeake District – Hampton Roads event at Churchland High School in Portsmouth.  Here’s what the judges had to say about our team:

The Chairman’s Award is the most prestigious award in FIRST. It honors the team that best represents a model for other teams to emulate and best embodies the purpose and goals of FIRST. The Chairman’s Award is presented to the team judged to have the most significant, measurable impact on its partnership among its participants and community over a sustained period, not just a single build season. The winners will demonstrate progress towards FIRST’s mission of transforming our culture. The recipient team will be invited to the District Championship where it will compete for the Chairman’s Award against other winners from other qualifying events and compete with their robot.

This team’s effort to spread the word about FIRST and STEM stretched from Richmond to Virginia Beach and dozens of locations in between. They have held events at local universities, a military base, other federal facilities, a tourist attraction, a professional association, museums, and even a public garden. This team helped stand up new FRC teams, supported rookie teams, helped revitalize an existing team, mentored additional teams, and held a popular off-season event. They also support an FTC team, and mentor and support four FLL teams, pulling triple duty for their work with FIRST. Hosting a round-table and summer camp, participating in a variety of STEM events, giving presentations to STEM-related organizations, and leveraging social media to reach a broader audience, clearly inspiring today’s youth to embrace science, technology, engineering, and math is embedded deep within this team’s DNA.


3D printing for therapists

Triple Helix presented at the Virginia Occupational Therapy Association’s 2018 School System Symposium.  The focus of our presentation was how therapy professionals can use skills and tools of “makers,” including 3d printing, to make customized products for interventions with their patients.  Our partner in this presentation was Maryland FTC team Green Machine Reloaded; this team presented on their work with the Go Baby Go program.

Abstract: “Makers” use the engineering problem solving process, and their hands, to bring their ideas to life. The competitive high school FIRST robotics teams Triple Helix Robotics and Green Machine Reloaded share the makerspace techniques to rapidly design and create assistive devices. The two teams will demonstrate the tools and technical skills used to 3D print small plastic objects as well as how to modify ride-on toy cars to create low-cost adapted mobility equipment.