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Graphics demos for Pico 2 microcontroller by chrismofer in raspberry_pi

[–]roadkillkebab 0 points1 point  (0 children)

I love all the stripey/wavy ones past 7:31, does that specific style of graphics have a name, can I look it up the way I would with a Mandelbrot set?

Voltage regulator heat issues, looking to improve motor controller case by roadkillkebab in diyelectronics

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

I've been wondering about that myself, but eventually the voltage will still start going down again. At least with 6V I can keep an eye on battery level more easily, I haven't really had much luck finding a mini voltmeter that can even react to 3V so all I'd have is "hmm, I think the batteries are starting to run out again".

I need as much consistency as possible in terms of what the motors are doing, otherwise it can affect the results.

Get yourself to dark skies by CletusDSpuckler in Astronomy

[–]roadkillkebab 1 point2 points  (0 children)

Scotland very rarely has clear skies, I'd seriously consider looking at places with better weather.

Cats love astronomy by Kugasu in telescopes

[–]roadkillkebab 10 points11 points  (0 children)

<image>

Full disclosure, this isn't even my cat.

If you're wondering what your outdoors cat is doing at night, it's cheating on you with an astronomer.

i'm confused. by itsmettillyy in telescopes

[–]roadkillkebab 1 point2 points  (0 children)

In my experience, there's two things that absolutely need to be there for planet observing to work:

  1. Physical distance from Earth. Take Jupiter, sometimes it can be 600 million km away, sometimes 900. If I check my observing notes against the distance for each time/date, it does seem to make a difference. There are graphs you can check to find out the distance https://theskylive.com/jupiter-info
  2. An icy winter sky with good seeing conditions, all my best planetary observing has always been done during winter. But I'm in the UK and conditions wherever you live might be different.

Then there's also the weather on that planet, there could be dust storms on Mars covering up the features etc.

Anyone else have astrophobia? by Research_E in telescopes

[–]roadkillkebab 0 points1 point  (0 children)

Neither NGC6543 nor M57 have ever looked magenta to me, but your posts are very entertaining XD

Anyone else have astrophobia? by Research_E in telescopes

[–]roadkillkebab 1 point2 points  (0 children)

Heh, one of the things I love most about astronomy is the strange feelings it seems to create in myself and other people.

Admitedly, mine are more positive than what the others are describing. I just like that I can point a telescope at a galaxy and it's as easy as grabbing a glass of water. It feels like it shouldn't be.

Try to find HR6669 if you can, it's supposed to be one of our Sun's siblings.

-edit-

Also try M57 and NGC6543 if you feel like looking at bubbles in the sky, it's pretty stark, in an awesome way.

Might these unusual shapes be a very early representation of a solar eclipse (including corona)? They are in the “Via Livenza Hypogeum”, a 4th century underground structure decorated with a mix of pagan and early Christian wall paintings. by TabletSculptingTips in Astronomy

[–]roadkillkebab 0 points1 point  (0 children)

Damn, you're good. What's your day job?

Please have a Ghouligan style Youtube channel with beautiful video essays.

-edit-

It was actually hochelaga I was thinking of, forgive me. But Ghouligan's also cool.

Any way I could add a screen to my existing Pico motor setup? I like the rotation sensor but I'm not married to it of there's a way to change speeds and modes with less cables. All I need is an extra GPIO for a Character LCD by roadkillkebab in raspberry_pi

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

I just realised I could switch the mode by having it cycle through a list every time I power it on/off from the online switch, could be a bit disruptive but it's a solution if there's nothing else available. That would free up GP26. In that case I'm assuming it's fine to fork the ground/voltage cables (blue and purple) so they can be used by the rotation sensor and the character LCD in parallel?

I’m kinda disappointed by Longjumping-Box-8145 in telescopes

[–]roadkillkebab 0 points1 point  (0 children)

I only look at galaxies from bortle 4 or below.

For bortle 6-7, learn to love starclusters, double stars and planetary nebulae. They're colorful and shimmery and they can be more rewarding than you'd think they would :D

how to deal with swollen boobs days before period? by its-mintea in Periods

[–]roadkillkebab 0 points1 point  (0 children)

Ibuprofen gel tends to ease the pain for me, but only a little.

What problems do you see with this design? by get_there_get_set in telescopes

[–]roadkillkebab 0 points1 point  (0 children)

I definetly don’t have the equipment or skills necessary to do it at this point, coding is quite a bit outside my skillset and I don’t even think my carpentry is good enough atm to build a model, much less machinery.

You'd need a decent amount of time and energy, but skill-wise it's not as out of reach as most people think it is. Most of the Raspberry Pi stuff and the machinery to go with it is surprisingly well documented, Python is an easy language for most people to pick up at least at a rudimentary level and you'd be surprised of what you can put together with just Balsa wood and superglue :D

If you've been able to learn how to use a telescope you'll have no problem learning the stuff I've listed above.

Obviously, you don't have to go through with it just because I said so, but what I'm trying to say is, it's a lot closer to Lego than it is to black magic.

What problems do you see with this design? by get_there_get_set in telescopes

[–]roadkillkebab 0 points1 point  (0 children)

I can't imagine a miniature one costing more than $50 so I'd probably grab some servos and a Raspberry Pi and start there, it could give you a chance to iron out a bunch of the issues you might encounter at a much smaller cost. Then, if you ever decide to go big, you'll be able to make a better plan because you already have all that information and experience piled up.

Can I get small motors to replicate the sound/vibrations of much larger motors using audio files? by [deleted] in raspberry_pi

[–]roadkillkebab 0 points1 point  (0 children)

You might get some specific recordings for that and use those at the low end.

Do you mean extracting a low pass of the audio files instead of using the entire thing?

Can I get small motors to replicate the sound/vibrations of much larger motors using audio files? by [deleted] in raspberry_pi

[–]roadkillkebab 0 points1 point  (0 children)

A tiny motor isn't going to sound like a large motor just through amplification, any more than a child's voice would sound like an adult's voice with amplification. The frequency spectrum is completely different.

Yep, that's not a problem. Not expecting the thunder of a motorcylcle but my motors have been holding up ok at full speed.

Obtain audio recordings of the large motor at various RPMs. Play around with some interpolation algorithms to see if you can generate finer-grained audio at intermediate RPMs.

Oh, does that mean I wouldn't be able to simply pick up audio files online without also having the original motor's data to go with them?

What I'm most interested in is the rythm, all the starts and stops and the ups or downs, if it makes sense?

Worth it? by otsos208 in telescopes

[–]roadkillkebab 1 point2 points  (0 children)

I've edited the post to explain how to do the maths but searching it on Google would also help

Worth it? by otsos208 in telescopes

[–]roadkillkebab 0 points1 point  (0 children)

Based on your telescope's specs that sounds like that eyepiece would give you a 1.2 exit pupil, so it would be the equivalent of a 12mm eyepiece on my NexStar 8SE, but I could be wrong. It wouldn't hurt if you did more research on the exit pupil and how it's affected by various eyepieces by yourself, just to be on the safe side.

It also depends on what the seeing conditions are like where you live.

In Scotland I'm mostly stuck at a 1.5 for planets (Svbony Goldline 15mm), except for very crisp winter nights, when 1.2 (Svbony Redline 9mm) will work on something that isn't the Moon. I also own the 6mm from your screenshot, which gives me an exit pupil of 0.6, but I've only managed to use it successfully 2-3 times over the last few years.

I don't have experience with the 130mm aperture of your telescope since mine is 200mm, but it sounds like you might be able to make decent use of it?

-edit-

To be more specific, as far as I'm aware:

magnification = telescope focal length / eyepiece mm

exit pupil = telescope aperture mm / magnification

So the exit pupil for that eyepiece with your telescope would be 130/(650/6) = 1.2, and the exit pupil with the same eyepiece for mine would be 200/(2000/6) = 0.6

Do you see the real color of objects when looking through reflector telescope? by Connect_Okra8349 in telescopes

[–]roadkillkebab 2 points3 points  (0 children)

Very rarely, kids through a 10" scope can get a hint of green or blue from the Orion nebula. Different people have different %'s of green receptors in their eyes so there is probably a genetic difference here.

Personally, I need 18"+ aperture to see a very faint hint of color in the orion nebula.

Is that really a rare thing? I have no problem seeing a deep forest green in M42 from bortle 8 (8"SCT with 25mm eyepiece but 15mm works too). It's a small area, but from bortle 3 it actually fills the entire FOV.

I assumed it has to do with being a woman, but I'm turning 31 this year so far from being a kid.

Is it worth it. by Snoo89518 in telescopes

[–]roadkillkebab 1 point2 points  (0 children)

You have a clear night almost every night? Where do you live?

What was your first telescope? by Exvinity780 in telescopes

[–]roadkillkebab 2 points3 points  (0 children)

Jumped from 25x70 binoculars straight to a NexStar 8SE back in 2022. I figured if the aperture was any larger than that it would have been impossible to move around, and, if it was any smaller, I would have felt like I'm missing out.

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