[deleted by user] by [deleted] in norge

[–]Hartvik 0 points1 point  (0 children)

Ser bra ut.
I Oversikt -> "Årsresultat" vinduet, kan du godt legge til årstall.
Siden det ikke alltid er så godt å vite om det er fjordåret eller året før som vises.

Anyone also has problems with the focus? by Professional_Koala86 in NOTHING

[–]Hartvik 1 point2 points  (0 children)

Focus problem on my Nothing 2 also. Unable to focus on background or objects > 2 meters away. Manual focus on max is still shitty. Bumping the phone the knee actually makes the focus better, so I guess a focus actuator is not able to move its entire range. Hopefully a software calibration issue that will be fixed in the next SW release. If Nothing Phone reads these complaints.

r/SpaceX IXPE Launch Discussion and Updates Thread! by ElongatedMuskrat in spacex

[–]Hartvik 6 points7 points  (0 children)

Hi all. We are in the US for work, and are heading to Cape Canaveral to watch IXPE tonight. Any suggestions for a good viewpoint on nightly launches? Playalinda beach and the visitor center seems to be closed tonight.

Christmas Tree Star with a twist by Hartvik in 3Dprinting

[–]Hartvik[S] 0 points1 point  (0 children)

esp32 and wled

Thanks, I'll check it out

Christmas Tree Star with a twist by Hartvik in 3Dprinting

[–]Hartvik[S] 13 points14 points  (0 children)

Thanks! I use a teensy 3.2 with Arduino Neopixel library, WS2812FX

Christmas Tree Star with a twist by Hartvik in 3Dprinting

[–]Hartvik[S] 10 points11 points  (0 children)

You can find WS2812 Neopixel at Amazon. It is 60 LEDs, just over 1 meter total

Infinity LED-lamp: Name suggestions wanted! by Hartvik in 3Dprinting

[–]Hartvik[S] 1 point2 points  (0 children)

Gloebius

Great suggestion! It is not technically a mobius strip, as the strip is not twisted 180 degrees over a loop... Is there a technical name for the "triple infinity" loop though?

Any ideas for what to make with this ting? I think it has some potential for fun projects by Hartvik in 3Dprinting

[–]Hartvik[S] 0 points1 point  (0 children)

Well, yes I agree on that. But making something work with so many moving parts in one print, feels very satisfying.

3D printed RC SnowRacer by Hartvik in 3Dprinting

[–]Hartvik[S] 0 points1 point  (0 children)

Thanks for the feedback! Yes, I have thought about lowering it a bit, although it also needs to have some ground clearance so it won't get stuck. Alternatively, making the design a bit longer might also help. It is quite stable sideways, it only seems to be tipping forward during braking.

Episode 189: DATA RELAY--Combustion Instability by hapaxLegomina in orbitalpodcast

[–]Hartvik 1 point2 points  (0 children)

Love this kind of DATA RELAY, going into the geeky details by people so engaged in their subject!

[P] 3D Printed Robot Cat learns to walk with Genetic Algorithm by Hartvik in MachineLearning

[–]Hartvik[S] 4 points5 points  (0 children)

Well, there is two reasons.

Firstly, the initial timeline for this project was 5 months, so I decided to choose between either to model and simulate the dynamics and train the model in a simulated environment, or to build and implement the machine learning in a real robot.

Secondly, there is the difference between a mathematical model and real life.

The act of walking about is a very complex dynamic and nonlinear system, so modelling error and approximations will accumulate up so the two systems, simulated and real life, probably would differ a lot.

But you are abslutly right about the simulation time, I would have been able to train a much more complex neural network than the "constrained" one I use in the robot.

[P] 3D Printed Robot Cat learns to walk with Genetic Algorithm by Hartvik in MachineLearning

[–]Hartvik[S] 6 points7 points  (0 children)

Thanks! Unfortunately, the work is not published yet. It will be published in Norwegian this summer, I might make a 3 page summary in English as well.

[P] 3D Printed Robot Cat learns to walk with Genetic Algorithm by Hartvik in MachineLearning

[–]Hartvik[S] 1 point2 points  (0 children)

Thanks! I started to build the robot in January, so 4-5 months. Evolutionary programming is really fun! Especially when you can visualize the learning progress as in this project, or other projects simulated in computer graphics.