Viewing profile — mferraro89
mferraro89
HN member- Joined
- Tue, Jan 19, 2021, 2:35 AM UTC
- HN karma
- 640
- Public activity
- 26 items
- HN profile
- View on Hacker News ↗
About mferraro89
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Recent public activity
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Comment #29097411
Did this article at some point give up and jump straight into something too difficult?
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Comment #29097377
ha, thank you for your honest feedback. My intended audience is not PhDs or math majors, it is high school physics teachers, practicing engineers, programmers, precocious high scho…
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Comment #29097177
thanks! the 3blue1brown website has some great written content that you may enjoy: https://www.3blue1brown.com/#lessons
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Comment #29097154
thank you! It took a whole month to get the 3D illustrations working well.
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Comment #29097145
why? too clickbaity?
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Comment #29097112
Hi. I wrote whole section on the history of GA and what happened and why it isn't already the norm, but I chose to remove it because the article is already far too long, and I don'…
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Comment #29097048
hey, if you have time to detail those mistakes I'd be happy to fix them in the text. Can you email me at mattferraro.dev@gmail.com
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Comment #29097033
author here. I was mistaken about the 5 degrees of freedom bit. Bivectors have three. I'll fix the text tonight. I'm sorry you wasted ten minutes on my nonsense.
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Comment #29097001
Yes, a bivector has 3 degrees of freedom. I was mistaken when I wrote 5. I'll fix the text tonight.
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Comment #29096989
Author here: I was wrong about the 5 degrees of freedom thing. A bivector has 3 degrees of freedom. I'll correct the text tonight.
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Comment #28292059
yep that paper is extremely impressive! I would love to implement that approach as well, but it is much more computationally expensive. In the Q&A after a talk from that paper's au…
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Comment #28291423
Author here. At my day job I spend lots of hours debugging messy React code! The key is to have side projects too :)
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Comment #28291410
yep I think you're exactly right, as evidenced by the fringes.
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Comment #28291395
Author here. That's a fantastic question! I think you're right that a better solution would include adding curvature to the individual "pixels" in the lens mesh. Unfortunately I do…
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Comment #27752298
You are correct! The simulation as written does not handle the no slip condition. The simulated "air" is inviscid and irrotational. You would need to tackle a few more things in or…
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Comment #27751398
Thanks for calling this out, I thought it might cause confusion. Matrices are super weird objects because they don't fit nicely into the {scalar, vector, function, operator} classe…
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Comment #25842553
thanks you're right about the year! I'll fix that in the next update
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Comment #25842544
thank you for your feedback! I will incorporate all of this into my next draft!
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Comment #25830226
Very cool! A modern analogue might be LinuxCNC, which runs on old PCs in a realtime manner, generating pulses and sending them out the parallel port, or sending commands over ether…
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Comment #25830079
haha no I'm not from Vancouver but I do love Canada. Living in Northern California.
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Comment #25830061
OP here: Teknic Clearpath servos are considered good value and come in lots of different sizes/price points. Wiring them up could not be simpler, but know that you need a windows c…