Author Archives: Andy "SuperFly" Rundquist

About Andy "SuperFly" Rundquist

Professor of physics at Hamline University in St. Paul, MN

Stepper motor with Arduino motor shield

We have a bunch of Ardunio-brand motor shields and I wanted to jot down what it took to drive a stepper motor with them. The documentation really only tells you how to hook up DC motors, though it does say … Continue reading

Posted in arduino | 1 Comment

Keep from just plowing through

I spent a good portion of the day trying to figure out what I wanted to do in my Theoretical Mechanics class tomorrow. We’ve recently begun the chapter on central potentials and I wasn’t sure how far to try to … Continue reading

Posted in sbar, sbg, syllabus creation | 2 Comments

Double pendulum roller coaster FIXED

My last post was wrong. I’m to blame. But in thinking about it and talking about it with with lots of helpful friends I ended up learning a ton. Here’s the upshot: There were kinks in the roller coaster loop … Continue reading

Posted in mathematica, physics | 7 Comments

Double pendulum roller coaster

EDIT: SEE THE NEXT POST THAT FIXES A MAJOR MISTAKE IN THIS ONE I’ve been doing a lot of modeling of beads on wires lately, but today I discovered something that really surprised me. The surprise came when I found … Continue reading

Posted in mathematica, physics | 8 Comments

Lagrange multipliers revisited

I spent the last few days trying to decide whether to teach Lagrange multipliers in my Theoretical Mechanics course. Ultimately I decided to go ahead and do it and I wanted to get down my thoughts on why and what … Continue reading

Posted in mathematica, physics, syllabus creation, teaching | Leave a comment

Setting up oral exams

I’m teaching Theoretical Mechanics this term and next week we have the first set of oral exams. Each student will take 9 oral exams, but each will only be five minutes long. With only 13 students in the course, each … Continue reading

Posted in oral exams, syllabus creation | 5 Comments

music vs physics

Don’t be alarmed, I’m not trying to start a war. I’m really just getting down some thoughts I’ve had about teaching and learning music and physics. Recently I’ve started teaching music to high school students and I’ve started to learn … Continue reading

Posted in teaching | 3 Comments