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Everything posted by Mognet
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is this 3D printed part feasible? 800mm project
Mognet replied to Michele Scotti's topic in DIY Astronomer
The spec in the original post said 2.5mm Would it be possible to repurpose an existing type of pipe? A quick look says that plumbing waste pipe goes up to 113mm. Not quite the 120mm diameter that was required though -
is this 3D printed part feasible? 800mm project
Mognet replied to Michele Scotti's topic in DIY Astronomer
I was wondering that last night after slicing it for my printer. At 0.10mm layer height it was saying 24 hours for the print, and 12 hours at 0.28mm -
Stefan of CNC Kitchen has now done an analysis of the salt baking technique https://youtu.be/DyAKtS1b3SQ
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There seems to be a fashion for these lights on houses now. I've recently spotted several houses round here with lighting in the eaves that seems to serve no apparent purpose other than showing off the outside of the house when it's dark. Those belonging to the neighbour of the OP do seem excessively bright though
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Apparently print speed and temperature do also affect the strength of prints though I'm not sure I'd use PLA or PETG for anything that would need to be reasonably strong, even if it was annealed. ABS might be better suited
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I'm a bit curious about this too. I was watching Stefan of CNC Kitchen do similar with plaster of Paris. His method is a lot more involved though and needs a few items of kit that we wouldn't normally have around https://www.youtube.com/watch?v=bG8dlxTX3AI
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There were the Soviet Vega probes in the 80s that lasted a couple of days floating in the Venusian atmosphere. And there is talk of possibly more https://www.bbc.co.uk/news/science-environment-54151861 I'm still surprised that it's Venus given that is has an extremely hostile atmosphere
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Single shot with my phone. They just popped over in their spaceship to pick up some supplies for the iron chicken 😉
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The mystery white bloom reappeared again tonight. Wondering if it's from auto ISO and exposure time in darker conditions, so I've changed the night and day arguments to a fixed ISO value. Daytime="-ISO 100 -awb greyworld -n -w 820 -h 616 -ex auto -o /run/shm/$SCR.jpg" Nighttime="-ISO 3200 -co 70 -awb greyworld -n -w 820 -h 616 -ex night -ag 9.0 -dg 2.0 -ss 6000000 -o /run/shm/$SCR.jpg" It's back to behaving how it should with only a little glow on that edge again
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I've had an oddity occur with a Pi Noir webcam (this one) I got it last week and it's all been working fine, then a couple of nights ago it developed a white bloom across the image at night. It survived tinkering with the capture setting, numerous reboots, several power downs, and cable checks. And a case redesign to make sure it wasn't stray light from the Pi Zero inside. It has even made it onto the videos. Then in right clicking and viewing the image prior to posting here, it 'fixed' itself. Can't see a reason for it in the code either
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I don't think you need to. They are pretty amazing images as they are
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Hi, That sounds like a good idea for the aurora. Having seen them in Iceland I know you have to be in the right place to see them In answer to your questions, and from what I know: I think there are a few mistakes in the instructions. I didn't need to use the make file when I set mine up, and I think there is a comment by someone else in the thread about that. The best instructions are here in the GIthub code. They don't display properly on the main page for the project but in that text file they do You can have as many Pi's as you want sending images to display on a common web page. There is nothing in the code here for that, but it doesn't mean that you can't extend the code to do what you need. There is currently no security on the web pages, but they are currently only accessible from within the local network and are not exposed to the wider internet. That part would depend on network configuration. There have also been a couple of other security questions raised that might need fixing The speed of the night images is a limitation of the camera. It needs to collect more photons at night to have anything for display. Mine is set to take images once every two minutes and that seems to work ok. I have not yet checked what the actual exposure time at night is to see what is possible
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It's a good documentary. I watched it a couple of times a few years ago. Just put it on again as it's worth repeating
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You took the all in one place at the start approach. On reflection that's probably the cleaner method of fixing the problem. I'd still use the fgets which then wouldn't need to be wrapped in a substr as it's a bit more obvious where the data comes from I don't have any weather station data or even a temperature probe, so I just went with the sunrise instead. I didn't look to see if it was possible to split lines to get anything more on
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I need to order a dome of some kind so I can mount it outside. Surprised that in all the junk in this house I don't have anything that appears to be suitable! Poking around the code and finding fixes for stuff is making me miss being a developer. I did have a huge coding aspect to my role some years ago but that part seems to have gone away
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I took a different approach and replaced the fread usage with a series of fgets. Might be my history of processing sequential files on a mainframe showing though! An example from webcam.php. Similar code changes are required in suntimes.php, index.php and about.php. Index.html also contains the fread code, but it looks like the php section in there isn't used, so I've commented that out // Get the sunset time from the daily file $myfile = fopen("/home/allsky/daily", "r") or die("Unable to open file!"); $ADawn=substr(fgets($myfile),0,5); $NDawn=substr(fgets($myfile),0,5); $CDawn=substr(fgets($myfile),0,5); $SRise=substr(fgets($myfile),0,5); $SSet=substr(fgets($myfile),0,5); $CSet=substr(fgets($myfile),0,5); $NSet=substr(fgets($myfile),0,5); $ASet=substr(fgets($myfile),0,5); $sunrise ='Sunrise: '. $SRise; $sunset = 'Sunset: '. $SSet; fclose($myfile); I've added the sunrise time into the banner text too The odd thing with the last hour of night images didn't reoccur last night, so I'm not sure what happened there. Could be a timing thing again
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I suspect at least one problem could be down to the file /home/allsky/daily having the text (midnight sun) in it. That's the cause of the sunset time in the image displaying something like 01VT04 instead of the proper sunset time The daytime movie problem I think was purely down to timing and the change over being on the hour. I notice that when it resolved itself was when the daytime video was due to start at 04:02. And that means it's likely to happen again whenever the start is on the hour Having the image time on the video could be useful if anything interesting is caught. Last night I got a bit of an ISS pass in the frame
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Has anyone seen an issue where no images are taken for the last hour of night but the last taken image is still being added to the night video? I have a number of duplicated night images from 3am to 4am. It's the second night it's happened that I know of. Saturday night/sunday morning the image didn't change after 3am but was working again in the morning I'm going to have a couple of debugging sessions. The day video not clearing and the sunset time display issue are on my list already. I know the basic causes, just need to identify fixes now
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Definitely a slippery slope! But £80 for an Ender 3 Pro is a bargain. That's about a third of their current retail price I used mine to print out my own design case this week. It's going in the window for now until I have somewhere to mount it outdoors
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That's the usual length for my night videos at the moment, and daytime it's 1min22 ish. Not checked if they are the correct lengths for my capture settings. I've set it to 1 minute for daytime and 2 minutes for nighttime, and then set the video compile to once every fifteen minutes
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We're pretty close geographically, and I suspect we all have very similar sunrise and sunset times. I think Jason is only ten miles or so from me so ours will be almost identical I've put mine up in the spare room window as I don't have all the parts for outdoor placement yet, and my 3D printer is being awkward about printing things at the moment
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More oddness. After the reboot things seemed to be better but now have yesterdays daytime video as the night video. I'm sure I checked the night video after a couple of hours too. Time to refresh the code and investigate. Might be something I've done by accident while looking at the code