Ive had the whole grounding issue explained to me very well at University. Wether you should ground shielding on only one or both ends depends on the frequency of the interference you want to shield against. For lower frequencies (500kHz - 1MHz or below) you should ground your shielding at both ends because the interference is due to induction in the conductor. In that case the shielding works by creating a magnetic field (due to the interference) that is opposite to its origin (in that case the interference) and should thereby cancel out the induction in the actual conductor you are trying to shield. For that to work you need actual current to flow, which is why the shielding needs to be grounded on both sides. For higher frequencies the interference is transmitted onto the conductor via capacitive coupling. In that case the shielding acts as the second plate of a capacitor that shorts every charge that is deposited onto it to ground. You are then not relying on the current though the shielding to cancel out the interference. In your specific case here the frequencies of the interference should be mainly due to the vfd's or similar power electronics with working frequencies well below the 500KhZ to 1MHz range which is why I believe grounding both sides would be best.
@RotarySMP9 ай бұрын
Since there are a zillion HDMI cables out there, would the shielding not be defined in the stardard, and used on all cables?
@aaronsilas70249 ай бұрын
@@RotarySMP For HDMI Cables very likely yes . (Although standards for consumer electronic cables and the like are often not very reliable because a lot of producers just simply ignore them and or make up their own) My statement was regarding general shielding issues that should apply to HDMI cables as well.
@RotarySMP9 ай бұрын
@@aaronsilas7024 Thanks for explaining that Aaron.
@joell4399 ай бұрын
Mark, you really have attracted some of the smartest people to this channel. I learn so much by reading the comments on your videos, more than any group of comments I see on other channels. Thank you to everyone out there that contribute. 🙏🙏🙏🙏
@RotarySMP9 ай бұрын
Thanks a lot Joel. The community is the best aspect of doing this lark :)
@Preso589 ай бұрын
You did a great job on the cable. I had to make some engraved plates recently. I used black colorbond steel and engraved through the black paint to the zincalume underneath. You can drag engrave, rotary engrave or laser it and the factory finish looks great. Regards, Preso
@RotarySMP9 ай бұрын
Hi Preso. I got an offer from a kind view to redo those plates more nicely on his laser. :)
@braspatta9 ай бұрын
I am glad it helped. Solder the shield to one end, a bit better this way.
@RotarySMP9 ай бұрын
Thanks for the tip. I only got solder to stick on one end anyway :)
@millwrightrick19 ай бұрын
Soldering at both ends makes a ground loop and can cause problems.
@jeff32389 ай бұрын
At 14:57 “Jog Slow Man” well, yes, because jogging fast is called running
@RotarySMP9 ай бұрын
Nice one Jeff :)
@vincei42529 ай бұрын
Oh, oh, If Mark has been watching Clickspring videos then we're in for a treat! I'm expecting at least another 50 nameplate cleaning videos, they have to be just perfect 😂 RIP finger.
@RotarySMP9 ай бұрын
Thanks Vince. I was watching his series on gear cutting. Those jigs and tools he designed are really clever.
@ElTelBaby8 ай бұрын
@ 12:38 ... Now that is what I call a WET Stone...
@RotarySMP8 ай бұрын
You have to sacrifice for the art. :)
@lumotroph9 ай бұрын
Love the math rock at ~12 minutes!
@RotarySMP9 ай бұрын
Glad you enjoyed it. Thanks for the feedback.
@rallymax26 ай бұрын
Great call out for the aero root cause. It’s all about doing a 8D report. Doing that for cloud service providers (CSP) failures now. Love the channel, ex pat Ozzie in USA, so fellow Anzac in Austria is familiar.
@RotarySMP6 ай бұрын
Yeah, that sort of systematic approach is useful in all aspects of life.
@adagioleopard64159 ай бұрын
I understand all the components in the chain of CNC but it still looks like magic to me. Seeing something on the computer. Pressing some buttons amd after some work you're holding the part you saw on a screen a few moments ago.
@RotarySMP9 ай бұрын
Yeah, that is the dream. The reality is a fair bit different than that :)
@adagioleopard64159 ай бұрын
@@RotarySMP I know! I know. I CAD/CAM/CUT a lot at work.
@joeldriver3819 ай бұрын
I worked on TCAS in the early 90's, but now out of the avionics industry. I enjoy the insight you provide, and the projects.
@RotarySMP9 ай бұрын
Hi Joel. I am guessing that the runway collision alerting system (I forget the acronym.) is probably a lot more difficult to implement effectively.
@mazchen9 ай бұрын
5:12 at least you know the oil pum is working 😅
@RotarySMP9 ай бұрын
Yeah, flood of oil is a good indicator. :)
@GeoffTV29 ай бұрын
Thank you for the video, I enjoyed it as always. It's funny that you could carry on polishing and not notice that you're grinding your finger away at the same time. Good job you only had three to do and not 300, you would have just had a stump where your hand used to be. I've been following those aircraft stories with interest. As you say, hopefully aircraft news will go quiet again soon. - Heather
@RotarySMP9 ай бұрын
Hi Heather. Yeah, I felt nothing, then took a look and it started bleeding. I guess I should not have stopped and looked at it :)
@chrislee78179 ай бұрын
My brother was a senior engineer at Quantas. He was telling me the Max is an absolute disaster, old design that keeps being updated on the cheap to avoid the costs involved.
@RotarySMP9 ай бұрын
Yeah, the huge Leap engines has driven some compromises, which in hindsight are not ideal.
@mandrakejake9 ай бұрын
I used to operate a Mazak 5 axis and that didn't home the axis' - they were all 'absolute' encoders and set only on installation and service. It would reliably position to 0.0001mm! It was a very impressive machine with temperature controlled ball screws throughout
@RotarySMP9 ай бұрын
Yeah, when I wrote that, I knew this would come. Those top end machines are amazing.
@steveggca9 ай бұрын
@@RotarySMP absolute encoder servos are working their way into the hobby space. have you seen the the Marcos Rep video where he has ethercat working with linuxcnc?
@RotarySMP9 ай бұрын
Hi Steve, I saw the title, but at a time I didn't have time to watch it. It is on my view list.
@steveggca9 ай бұрын
@@RotarySMP It doesn't have any real application to what you have done so far, more of a future consideration. the ethercat connection (Beckhoff) allows for the connection of the servo drives and vfd/spindle amplifier and all related feedback through ethernet cables. absolute encoders are a bonus feature.
@RotarySMP9 ай бұрын
@@steveggca When I designed my retrofit, ToT did his ethercat videos. I considered it, but it seemed that LinuxCNC ethercat comp was not that mature, and I am not good enough at that side to risk it.
@martinchabot_FR9 ай бұрын
You could have used copper shield tape, this is the standard thing we use in case of EMI issue, expecially on fixed installation. With added kapton tape for insulation.
@RotarySMP9 ай бұрын
I didn't have any, but had that braid laying a the bottom of the wire pile :)
@boomermatic60359 ай бұрын
quite a few years ago I remember reading an article about TCAS and thinking I can't even imagine the level of computing power need to handle the air traffic back then, with today's level of air traffic the computing power needed is even higher. The reliability of such a system would have to be insanely high, IBM's latest z16 mainframe boasts nine nines of uptime and reliability, is that good enough for today's TCAS needs? All I know is, that question is way above my paygrade. 😀 Loving the build videos btw.
@RotarySMP9 ай бұрын
Since TCAS is aircraft based, it only needs to process the signals of transponders which respond to its interrogation. Since most flight path vectors at straight lines, I don’t think the TCAS computers need that much processing power. The cost is driven by the DAL A software certication due to risk severity of potential failures
@wizrom30469 ай бұрын
That monitor blinking dark, looks totally dark, ie backlight goes out. So it is possibly a power supply issue since monitor backlight supplies are notorious for blinking faults etc, usually caused by dried out electro caps in the backlight psu module. Of course it MIGHT be auto turningmoff the backlight with a loss of HDMI sync, BUT in my experi3nce when there is a loss of HDMI the backlight usually stays on just the image disappears.
@RotarySMP9 ай бұрын
I also considered a power issue, but it seems that the HDMI shielding has fixed the issue.
@timhatch12999 ай бұрын
@3:21 the _easiest_ place to attach you braid is those mechanical legs you covered up with tape. It looks like some of the pairs are supposed to be shielded separately as a pair but your flat cable isn't at all, so you might have better luck with a right-angle hdmi male-female adapter (cheap) and a regular hdmi cable.
@RotarySMP8 ай бұрын
Thanks Tim. It seems to be working stably now, but if it is not stable, I will see if I can get an angle adapter to fit.
@624Dudley9 ай бұрын
G’Day Mark, shield grounding/draining was always a foggy area in Avionics. Different vendors seemed to adopt conflicting strategies, and so on. We were often in doubt as to the best course of action.
@RotarySMP9 ай бұрын
Hi Doric, If you check the feedback the opinion is I need to connect one end to the shield, and also to connect both ends to the shielding :)
@624Dudley9 ай бұрын
@@RotarySMP Ah, there you go. Consensus. 👍
@vincei42529 ай бұрын
Good to hear you're getting a handle on the EMC gremlins. As to grounding braid, I wouldn't blindly ground both ends as you don't want to introduce grounding loops especially if the devices are powered from different supplies - that can introduce a lot of even weirder gremlins. I'd also look at placing ferrite beads strategically on problematic power supplies leads and cabling.
@RotarySMP9 ай бұрын
Thanks Vince. For now it is working, so I won't touch it again :)
@olivier25539 ай бұрын
For having learned to do fiber optic connectors by hand, when you polish a piece, you must go with figure 8 movements :)
@RotarySMP9 ай бұрын
Thanks for the feedback on that Olivier.
@budapest.Lamperth9 ай бұрын
I hope it isn't considered to be inappropriate to comment here regarding one of your previous video, but are the spools you used to load that Beaulieu R16 manufactured in such a way that light couldn't leak into its inner/unadvanced layers when not in the darkroom ?
@RotarySMP9 ай бұрын
Yes, that is typical for 16mm film. They come on so cald "daylight" reels, so you only fog the first few meters of film if you load it in the light.
@cavemaneca9 ай бұрын
I'm not sure about your specific dials, but I know with a lot of automation specific equipment they often key the threaded portion either with a cutout or flat. Makes it much easier to clock your face plates correctly and have them stay in place. Of course, nice to have features like that usually end up costing extra as well...
@RotarySMP9 ай бұрын
These are free rotation encoders, so there is no clocking required.
@tahwnikcufos9 ай бұрын
If it's a sync issue, try adding an EDID minder to the cable. I keep a couple of bi-directionals in my kit for A/V installs where detection isn't ideal for the use case.
@RotarySMP8 ай бұрын
Thank for the tip. It seems to work stabily now.
@tahwnikcufos8 ай бұрын
@@RotarySMP I have a bad habit of commenting before things get fixed 🤣
@RotarySMP8 ай бұрын
@@tahwnikcufos Thanks for commenting.
@taavil33739 ай бұрын
Thanks for posting interesting content! I’ve really been enjoying your videos, especially loving the post rock style backtracks! Keep it up!
@RotarySMP9 ай бұрын
Glad you like them!
@notsonominal9 ай бұрын
12:36 good call on switching to water!:P
@RotarySMP9 ай бұрын
Water cool the ground finger :)
@alexscarbro7969 ай бұрын
If you can, lay the HDMI cable flat against the grounded chassis. This can significantly help reduce immunity issues. Also, make sure that where your chassis panels mate, that there is a good electrical connection (to form a faraday cage).
@RotarySMP9 ай бұрын
Thanks Alex, good ideas. I have decent signal with that cable shielded and as far away from everything else as possible. I will get some of those sick on tie wrap mounts to keep the cable like that. I haven't made the back closing sheet yet.
@philip_fletcher9 ай бұрын
I'm sure you've looked already but if you search for "u shaped hdmi adapter" would one of those fit? Alternatively a custom PCB with a HDMI plug + socket would reduce the exposure area and allow you to use a single display port to HDMI cable.
@RotarySMP9 ай бұрын
Thanks for the tips. The shielded cable seems to be working fine for now.
@kirkjensen17189 ай бұрын
one end only the source end. connecting both provides a possible ground path for the electronics
@RotarySMP8 ай бұрын
Thanks Kirk, there seems to be a fair bit of disagreement here n these comments on that.
@julias-shed9 ай бұрын
Looks really smart I think shields are normally only connected one end but might depend on the interface type 😀
@RotarySMP9 ай бұрын
Thanks.
@TrPrecisionMachining9 ай бұрын
very good job RotarySMP
@RotarySMP9 ай бұрын
Thanks a lot.
@graealex9 ай бұрын
Ground both ends, and I would use aluminum or copper tape, it's not as messy, and works better for high frequency anyway, because it's solid. There is a situation where you must not connect both ends of a shield, and that's if you already have an inner conductor, usually PE, that carries ground/earth, because you don't want any stray fault currents on the shield. Here it's fine to connect both.
@RotarySMP9 ай бұрын
Thanks Alexander. It seems to be working well now. I wonder about all the recommendations for single ended shielding, as I kind of doubt the commercial ones are only connected at one end.
@graealex9 ай бұрын
@@RotarySMP Because people are confusing things. Especially where ground loops come from, and how fully isolated class 2 devices interact in that regard (both your PC and the monitor are fully isolated). We had a similar problem with HDMI, even an AOC. That obviously has no shielding because it's optical, however in addition to the HDMI signal on a fiber, it also carries power and I²C for EDID, which was susceptible to noise. All in the direct vicinity of a VFD and big motor. In the end we had to shield the whole optical cable, and the computer was a small-form-factor PC with external PSUs, so we had to drill a hole into it and mount a chunky ground cable as well. Only then would HDMI stop to break up all the time. And yeah, HDMI has shield connected on both ends. AFAIK there is no possibility of ground loop because none of the internal pins are directly connected to the outer housing, i.e. your braided shield is the single ground connection, like with Cat.5.
@RotarySMP9 ай бұрын
@@graealex Thanks for that Alexander.
@wizrom30469 ай бұрын
As an electronics guy I do a lot of small panel engraving jobs for prototypes and test equipment etc. For 3 small discs like that, I would clamp down a lerger piece of stock to ensure flatness, then engrave all 3 in one operation. The engraving would include the centre divot (for manual drilling later), or in most of my cases I would just change the cutting tool after engraving then CNC cut out the centre holes and lastly the edges to separate the 3 parts. And mostly not steel, I have come to prefer the rear engraving plastic laminate that has clear thick top layer and a very thin rear black layer you engrave through (reversed, obviously). Actually I think that plastic it might be a German product, I ordered a heap of it years ago with some small endmills from Germany.
@RotarySMP9 ай бұрын
Good ideas thanks. I didn't think of back engraving. That makes sense.
@chrisfairbrother91979 ай бұрын
@@RotarySMPit’s called traffolyte in the UK. 😊
@RotarySMP9 ай бұрын
@@chrisfairbrother9197 Thanks Chris.
@wizrom30469 ай бұрын
@@chrisfairbrother9197 thank you Chris! It was years ago I would have never found the receipt lol. 👍
@alexscarbro7969 ай бұрын
Interference could be going straight through the giant aperture in your housing (for the screen). Shame you can’t have ITO glass over it.
@RotarySMP9 ай бұрын
Could be, but it now seems under control.
@plasmaxer9 ай бұрын
Did you watch Chris at Clickspring hand engrave the Antikythera mechanism? Maybe you could have outsourced the engraving!
@RotarySMP9 ай бұрын
His workmanship is exceptional. We had a retired jeweler in the structures workshop I did my fire OJT in, and he could also hand engrave like that.
@LikeFactoryMade9 ай бұрын
Are your encoders push type? Used the push to reset the value to 100%.
@RotarySMP9 ай бұрын
Yes they are. Gmoccapy doesn't have reset pins for the jog or the spindle overrides, so I need to have a think about working around that.
@steveggca9 ай бұрын
@@RotarySMP I realize that you are running out of I/O, back in the good olde days, those switches were make before break rotary switches. ie the rapid override switch would have 5 positions (sometime 4 with 75% deleted) for 0%,25%,50%,75% ,and finally 100% otherwise known as 000 through 101. the feed rate override/jog speed selector had about 16 positions for 0% to 150% or 00000 to 10000. alternatively 16 ,selected by you, feedrates. spindle speed override was 50% to 120% these are forever settings until the switch is turned to another setting.
@LongnoseRob9 ай бұрын
The marking turned out great!
@RotarySMP9 ай бұрын
Thanks Rob. Not sure if a better paint might not have done better fill in ?
@iolithblue9 ай бұрын
Maybe consider a stylus for your touch screen?
@RotarySMP9 ай бұрын
Good point, I think Nico has one. I will borrow it and give it a try.
@unclespicey429 ай бұрын
One end. The one closer to the PSU and true ground.
@RotarySMP8 ай бұрын
Thanks, there seems to be a fair bit of disagreement on that in these comments.
@unclespicey428 ай бұрын
@@RotarySMP, well, in low-voltage situations, you want to avoid ground loops at all costs. The only way to guarantee that is to always ground one end of any shield closest to the best ground. It would be preferable to run all grounding points to one common lug and then ground that lug to the power source ground. At least, this is what they taught me when I took classes in satellite receivers. Ya know, stochastic signal processing and all that jazz.
@RotarySMP8 ай бұрын
@@unclespicey42 Thanks.
@Der_Edelpfuscher9 ай бұрын
4:54 HDMI ist ein digitales Signal also solltest du den Schirm auf beiden Seiten auflegen, bei Analogsignalen legt man den in der Theorie einseitig auf.
@RotarySMP9 ай бұрын
Thanks for the feedback. That sound logical.
@benstrait3339 ай бұрын
I wonder what the label disks would have looked like if you blued them before engraving.
@RotarySMP9 ай бұрын
I tried that as well. But then I cant scratch of sand the excess pain away, as that damaged the blueing. Maybe should have tried different paint.
@peterbonham55409 ай бұрын
On XFCE you can enable Mouse Emulation under accessibility. Can't remember if I had to do anything to enable it. Useful if you don't tend to use the keypad anyway
@RotarySMP9 ай бұрын
Thanks for the tip Peter.
@policedog40309 ай бұрын
Maybe a bit of a Non-Sequitur but just wanted to mention that some HDMI cables have their own IP Address. It might be for the feature of wirelessly accessing what is on a monitor screen. Perhaps covertly if associated spyware is installed - In Windows you can check via Device Manager "Show Hidden Devices"
@RotarySMP9 ай бұрын
This is a pretty basic Debian system, and is not connected to the internet, so I am not too worried about that.
@jonofalltradesmasterofnone8329 ай бұрын
I was always told to ground at the source end of signal.
@RotarySMP9 ай бұрын
Thanks Jon. That makes sense.
@ptonpc9 ай бұрын
Production quality and quaility control at Spirit has been a long problem. According to various documents, Spirit has focused more on churning out product by over worked andunder trained workers than it has on safety. Spirit has been requiring workers to work 12 to 18 hour shifts and quality control staff have been punished for finding faults. Blairanco(sp?) has been doing a few videos on with with documentation from cases going on right now. EDIT: I forgot to say, can you get a stylus so you can reach things on the screen instead of relying on your finger?
@RotarySMP9 ай бұрын
Yeah, the whistle blowers and other info leaking out of Spirit does not paint a positive picture of the culture there. Good point on the Stylus. I'll get one.
@BogdanTheGeek9 ай бұрын
Shielding is not about grounding. Shieds form a channel for the emi to traverse the wire. The shied should be a fully enclosed volume. You should not ground it unless its matches the above criteria.
@RotarySMP9 ай бұрын
Thanks for the explanation Bogdan.
@DavidKutzler9 ай бұрын
12:35 If you stare into Clickspring's videos long enough, they will begin to stare back.
@RotarySMP8 ай бұрын
His trade skills are phenomenal.
@MakarovFox9 ай бұрын
angle grinder, Niko is happy
@RotarySMP9 ай бұрын
I hope so.
@akfarmboy499 ай бұрын
I live in Fairbanks Alaska That 737-900 is talk of town
@RotarySMP9 ай бұрын
I bet it is. Pretty scary for those on board. Did you see the latest from Blancolirio? kzbin.info/www/bejne/iISqpp2EppmVjK8
@LCalleja9 ай бұрын
like the engraving :) looks like the lathe will be finished soon
@RotarySMP9 ай бұрын
Hi Luke, Thanks, but dont hold you breath :)
@LCalleja9 ай бұрын
Well one day it will be nearly finished
@RotarySMP9 ай бұрын
Good call :)
@jster19639 ай бұрын
Aviation accidents and incidents are always complicated like you said. It usually takes a long time to do the investigation too. Hopefully they find the root causes of both of theses and fix them.....
@RotarySMP9 ай бұрын
Hi Jasper, Yeah, I think there is going to be a lot of lessons learned from both. Could you please drop me a line on the email address on my channels "about" page. Cheers, Mark
@jster19639 ай бұрын
@@RotarySMP Sure. But I don't see an "about" anywhere....
@RotarySMP9 ай бұрын
@@jster1963 Oh right, KZbin have removed the about tab, Now the email address is in the main channel description, once you expand it with the little right bracket.
@legochamp19 ай бұрын
hast du das Gehäuse, PC, und Bildschirm auch geerdet? am Besten ist alles auf das selbe Potenzial zu hängen. hab bei meiner CNC fräse meine Datenkabel mit Alufolie geschirmt weil ich nichts anderes hatte und erst als ich Maschine, Gehäuse und Kabel am selben Erdpotenzial hatte hats gut funktioniert.
@RotarySMP9 ай бұрын
Habe ich nicht. Derzerit funktioniert es mit dem Kabelshirmung, aber, falls problem auftretten gebe ich eine Erdung dazu.
@Hilmi129 ай бұрын
Soon you will be forced to buy a new machine to restore. Your almost done with this one. On a more serious note, what got me started watching your channel was that camera stand you made, I loked seeing and actual project coming out of these machines, not just machines fixing machines
@RotarySMP9 ай бұрын
I look forward to that as well, but really want to finish the Schaublin before getting too distracted
@Hilmi129 ай бұрын
@@RotarySMP i have no idea how you managed to read that with all those typos. That's what I get for denying I need reading glasses
@SLeslie8 ай бұрын
Could you please help me? I saw a tool claimed to be used in the aviation industry in a video on YT but I cannot find anymore. This tool is somewhat similar like a car battery post cleaner wire brush. It can be fastened in an electric drill chuck, it has a pilot pin and is used to clean the surrounding metal surface around a hole for the best electrical connection for a ring terminal that to be fastened to the surface as grounding for example. Could you please tell me how is this tool called and if this can be purchased easily?
@RotarySMP8 ай бұрын
I discussed this with a friend who was Avionics. His suggestion was to search for: Battery post terminal cleaner or Battery terminal cleaner for drill
@SLeslie8 ай бұрын
@@RotarySMP Thanks for the answer! I appreciate very much. In the meantime I was so fed up that google absolutely did not gave any useful result that I re-watched a bunch of videos and finally found it. The tool is called "Piloted bonding brush" or "rivet hole brush". So far the closest company I found who sells this in the UK. It would be great if I would be able to find this available to buy in the EU.
@RotarySMP8 ай бұрын
Being mechanical, I never knew this tool existed. Wonder what it is called in German?
@cda329 ай бұрын
Shield one end, or you get ground loops. I'm surprised such a short cable has issues, HDMI uses differential pairs. That "cheap" aluminium roofing tape also works wonders.
@RotarySMP9 ай бұрын
Thanks for the feedback, Do you think commercial HDMI cables are only grounded at one end?
@graealex9 ай бұрын
It's most likely the (unbalanced) EDID/DDC signal that accepts the noise and makes the monitor lose connection.
@paulbyerlee25299 ай бұрын
Only shield one end for signal wires. You only shield both with vfd power wires
@RotarySMP9 ай бұрын
Thanks Paul. I think one connector had a coating on it. I only got solder sticking on the bent end.
@SorteBill15149 ай бұрын
Your pinecil soldering iron will work better from a 12V barrel jack than from USB :)
@RotarySMP8 ай бұрын
Are you sure about that? USB-C PB can supply up to 20V and 60W.
@SorteBill15148 ай бұрын
Sorry should have written 24V. I noticed a diference when I switched from usb to a 24v brick, but it might allso be my USB delivery that was weak.
@RotarySMP8 ай бұрын
@@SorteBill1514 I have been using my apple USB-C PSU, and it works well.
@theinfernalcraftsman9 ай бұрын
Better you did that on the stone than on the belt sander. That is not fun... We have been having allot of conversations about the plug door as well (while on an A320 usually). It's looking like the left side plug is taken out by another vendor that installs the sat internet. Not 100% verified yet though and not sure if the right side comes out either. That said that doesn't explain the loose bracket bolts in aircraft. Most of our conversation revolves around the fact that most US made products are made by the I don't GARA method. Just throw it together cash your check and go spend it. There is no pride in workmanship in most of the country now. And talking about this in the van to the hotel that was over an hour late at 1:30am cause they couldn't find their driver... The airline didn't answer anyone until personal texts were sent then they kept trying uber and they kept cancelling... Oh I didn't mention the return flight where we almost weight restricted as the flight went from block time of 2:20 to almost 5hrs to go around weather. And they had us de ice before finally approving the new route and needing to go get more fuel... In short no one cares. If I were in a position at an airline purchasing $$$ aircraft I would have MY people on the line with a check list camera and body cam checking all the deemed to be vital type things that you can't see after assembly. But I have an issue where if I didn't do it or at least see it done I don't trust that it was done properly and this is one of the many reasons why I feel that way. One of Reagans great quotes. "Trust but verify"
@RotarySMP9 ай бұрын
I know Lufthansa has a team of inspectors they send in to monitor production of their A/C. I met two of them on site in Dos Campos monitoring the Cityline Embraer production. I would no be surprised if Boeing and Spirit have a reasonably robust process for the TC production hand off of the fuselage. It would not surprise me if that STC installed at the end of production has little to none of that process interface and hand off.
@mazchen9 ай бұрын
6:13 did you try with a touchscreen pen?
@RotarySMP9 ай бұрын
Good idea. I dont have one yet, but will try that.
@michaelsilva70859 ай бұрын
I was just about to suggest that. Touchscreen pen on a string attached to the console. Simple and always handy.
@RotarySMP9 ай бұрын
@@michaelsilva7085 I will try this out.
@gorak90009 ай бұрын
With displayport to hdmi adapters, try to buy new old stock ones from HP, Lenovo, or Dell, not generic garbage from china. I've definitely had issues with DP->HDMI adapters having that flickering issue in the past. It's not a physical connection problem, but a problem with the chipset in the adapter / the video chipset / the linux drivers.
@RotarySMP8 ай бұрын
In this case that DP-HDMI worked with regular cables, and seems to work stably now I have the shielding and routing improved.
@stevensexton58019 ай бұрын
Solder only one end, you don't want to create a ground loop
@RotarySMP9 ай бұрын
Thanks Steven.
@gwharton689 ай бұрын
You should add a personnel touch to your panel. A drop of blood.
@RotarySMP8 ай бұрын
I just did :) Feed the CNC Demons.
@jamwaffles9 ай бұрын
Would you be open to sharing the FreeCAD file for those engravings, or at least how you got the (presumably single line?) text to work? I've been struggling to make some scrabble tiles because I can't get FreeCAD to do a non-TTF font which would be slow to machine.
@RotarySMP9 ай бұрын
I gave up one working out how to do it in FreeCad, and did these on my 20 year old copy of Feature cam sorry.
@jamwaffles9 ай бұрын
@@RotarySMP No bother! I think I'll try a workflow involving Inkscape and see how far I get.
@philip_fletcher9 ай бұрын
In the UK there is a campaign to prevent the pilot responsible for the Shoreham air crash from renewing his pilots licence. Whilst not wanting to comment on the particulars, what fascinates me is the different standards applied to drivers vs pilots. Five people a day are killed by drivers, yet no campaigns to prevent all of them from driving again and crash investigators have no power to affect change. If we applied the same rigour to motoring as we did to flying, the positive impact on society would be enormous.
@RotarySMP9 ай бұрын
... with the down side that about 2% would have and keep drivers licenses :) I think a lot of it is based on inherent suspition of flying. The move from horse to horseless carriage was not such a jump.
@philip_fletcher9 ай бұрын
And also the horseless carriages were initially the preserve of the very rich (and influential) - the Mr Toads. The everyday absolution of drivers is astonishing when compared to any other aspect of societal responsibility but especially when compared to pilots.
@RotarySMP9 ай бұрын
@@philip_fletcher I got my drivers license in NZ at 15. Would have been safer to give me and my mates loaded handguns :O
@kuglepen649 ай бұрын
The Boeing bolts are allegedly because QA simply has been removed! Boeing simply stopped doing QA on assemblage.
@RotarySMP9 ай бұрын
Did you see: kzbin.info/www/bejne/iISqpp2EppmVjK8. Interesting update.
@vincei42529 ай бұрын
Before I parted ways with my employer this past September they totally eliminated the entire QA/Acceptance testing teams. All of them. Someone sold theses clowns a bill of goods that all they need is software unit tests and automated testing. The developers that write the software are also now responsible for QA AND writing all the unit and automation in addition to developing the features. While doing this they made sure the organisation was so hostile people quit in droves, you know, the people that actually built those systems that don't have the magical 100% coverage unit and automation tests. This is a place that handles and profits of trillions of your money daily, across the globe, and has its hands in almost everything. I think we're heading into a new age of idiocracy, AI is going to be fuel for that dumpster fire.
@kuglepen649 ай бұрын
@@RotarySMP I saw one of the whistle blowers talk about it. But the issues are like an onion: Every insane action Boeing did can be followed by “Yes, but did you know what they did before that?”
@mumblbeebee65469 ай бұрын
As they say in my adopted nation: “Tidy, like”
@RotarySMP9 ай бұрын
Thanks.
@philip_fletcher9 ай бұрын
Can't beat a bit of Gavin & Stacey...
@jimurrata67859 ай бұрын
Shield only grounded at one end
@RotarySMP9 ай бұрын
Thanks Jim.
@larkbox84279 ай бұрын
wot no black sharpie.. that scuff to the left of the first label disk tsk tsk, joking aside great job..
@RotarySMP9 ай бұрын
You noticed. I did that with the finger nail getting the washer off. Needs a touch up. :)
@jimsvideos72019 ай бұрын
Aviation is a particular case of a million unnoticed successes and a few spectacular failures. Boeing in particular seems to have cultural issues.
@RotarySMP8 ай бұрын
That is well put Jim.
@MrZX12069 ай бұрын
I have seen 90* HDMI adapters.
@RotarySMP9 ай бұрын
I did, but thought I was being clever to avoid another connector by using that 90° cable. Not very smart :/
@Andrew_Fernie9 ай бұрын
You're in danger of finishing this project. I wonder what that would feel like? Did you see the Vulcan rocket launch? Shame the little lander won't be able to complete it's mission but at least the rocket works !
@RotarySMP9 ай бұрын
Yeah, it was a spot of good news for Boeing. Scott Manley did a good review.
@martinu27259 ай бұрын
I think if you ground at both ends of the shielding you could end up with ground loop problems.
@RotarySMP9 ай бұрын
Thanks Martin, Do you think commercial HDMI cables are only grounded at one end?
@graealex9 ай бұрын
Commercial HDMI as well as RJ45 cables have their shield connected on both ends.
@HeimoVN9 ай бұрын
@@graealex That is the way I understand it as well. I was told when I studied IT if a shielded cable is not grounded at both ends that the shielding starts to act as a antenna...
@graealex9 ай бұрын
@@HeimoVN Exactly. Also ground loops get formed when you have a) two devices at different ground potential, and b) an unbalanced signal where ground is part of the signal. Then current flows between the two devices, and the device interprets the ground current as part of the signal, for example you might get a 50 Hz hum on an unbalanced audio connection. HDMI itself is differential, however there is also an I²C signal for EDID/DDC, however that references a separate pin 17 as Ground. If there was a ground loop, it would already be happening over pin 17. Where you absolutely must not connect the shield on both ends is if there is a PE conductor in the cable. Then you must only connect shield to PE on one end, because you don't want fault currents running over the exposed shield.
@HeimoVN9 ай бұрын
@@graealex great info thanks...
@MikelNaUsaCom9 ай бұрын
=D
@RotarySMP9 ай бұрын
Thanks Mike.
@MikelNaUsaCom9 ай бұрын
@@RotarySMP one thing about the HDMI cable, I found with my high end monitor for gaming, that if I put it in a warm part of the house, it would get pretty warm and the backlight would tend to overheat. Pretty sure that's not your problem, but might want to monitor the temperature of your enclosure and provide some airflow if you find the temperature to be a bit high... just another thing to worry about with electronics... they give off heat and don't like to operate in a hot environment. =D
@CorporalWobbly9 ай бұрын
A plaster? Real fitters wrap their fingers in blue roll then hold it in place with black electrician tape
@RotarySMP9 ай бұрын
I weany I know :) Worst part was it was finger for unlocking the laptop.
@milloons28479 ай бұрын
And sealing knife cuts with cyano acrylic glue.
@HanstheTraffer9 ай бұрын
My guess is cultural issue. Boeing has shifted to wokeism.
@RotarySMP9 ай бұрын
I think the cultural shift came with the shift to greed, from excellence.