vha3

7 ms·

31.
by vha3 4y ago
The course website (linked) contains the documentation and bill of materials for each lab assignment. All lectures will be posted online starting 8/22/2022. We'll be synthesizing cricket chirps, animating flocking algorithms,
32.
by vha3 4y ago
A fantastic discussion of Kalman filters is here: http://www.anuncommonlab.com/articles/how-kalman-filters-wor... And a more technical introduction based on the article above: https://vanhunteradams.com&#x2F
33.
Spacecraft Attitude Dynamics and Determination(vanhunteradams.com)
2 points by vha3 4y ago|0 comments
34.
by vha3 4y ago
It is still a work in progress, but Dmitry Savransky of Cornell is working on an interactive astrodynamics textbook using Jupyter notebooks. Link here: https://github.com/dsavransky/astrodynamicsbook
35.
Bombe Machine on an FPGA(people.ece.cornell.edu)
83 points by vha3 4y ago|17 comments
36.
by vha3 4y ago
Students implemented a Bombe Machine on a DE1-SoC.
37.
by vha3 4y ago
In case seeing it in software helps anyone else, here is some C which implements an Enigma machine: https://vanhunteradams.com/Enigma/Enigma.html
38.
Interdisciplinary Investigation of a Mummified Bird(news.cornell.edu)
1 points by vha3 5y ago|0 comments
39.
Understanding Fast Fourier Transforms(vanhunteradams.com)
34 points by vha3 5y ago|2 comments
40.
Synthesizing birdsong via direct digital synthesis(vanhunteradams.com)
2 points by vha3 5y ago|0 comments
41.
Kolmogorov Complexity(en.wikipedia.org)
3 points by vha3 5y ago|0 comments
42.
Phenomenological Introduction to PID Controllers(vanhunteradams.com)
92 points by vha3 5y ago|14 comments
43.
Show HN: Trying to understand some pretty patterns(vha3.github.io)
5 points by vha3 5y ago|0 comments
44.
Direct Digital Synthesis(vha3.github.io)
1 points by vha3 5y ago|0 comments
45.
by vha3 5y ago
I don't unfortunately. I came up with those numbers by using the timers on the PIC32 to measure execution time, in case that's helpful. Or alternatively (and often more simply) by setting and clearing a GPIO pin before/after
46.
by vha3 5y ago
On the PIC32, fixed add is ~2 cycles and floating point is is ~60. And about a 2x increase for multiplies. On architectures with floating point hardware some of the advantage is lost, but it's fantastic for DSP on microcontrollers.
47.
Fixed Point Arithmetic(vha3.github.io)
79 points by vha3 5y ago|60 comments
48.
by vha3 5y ago
Prepared as a lecture supplement for ECE 4760 (Digital System Design Using Microcontrollers) at Cornell.
49.
by vha3 5y ago
Some additional documentation here: https://vha3.github.io/Pico/Steppers/Lorenz.html I've been experimenting with the PIO (Programmable I/O) system on the new microcontroller from Raspberry Pi. These are
50.
by vha3 5y ago
They're definitely a bit loose! There's some slack in the etch-a-sketch mechanism too, which is why the tops and bottoms of the curve look a bit flattened. When the motors change direction, the dials must move through a nonzero an
51.
Show HN: Strange Attractor on an Etch a Sketch with Raspberry Pi Pico(youtube.com)
47 points by vha3 5y ago|9 comments
52.
by vha3 5y ago
Documentation can be found at this link: https://vha3.github.io/Pico/Steppers/Lorenz.html An RP2040 microcontroller drives two stepper motors that turn the knobs of an etch a sketch.
53.
Show HN: Strange Attractor on an Etch A Sketch with Raspberry Pi Pico(youtube.com)
1 points by vha3 5y ago|1 comments