rebekah_harper
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Posts posted by rebekah_harper
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Hiya,
it’s a good idea but I prefer not to.
I want a complete controller for the crane.
But im excited to make the controller too. Arrange it how I want it.
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Thank you so much. The advice is what I was looking for. It gives me direction. Am getting to know the script writing for Arduino and the principals seem simple enough. I just need to build up on the codes and their functions. I am pretty sure there’s is coming to be plenty of conditionals in my script and it’s going to be very long but I love the possibilities.
I will I’ll research what sort of wireless options there are and which is going to be most useful.
Considering the the amount I want to be able to do, what board would be best to use. I was thinking Mega but I am still making my way through their capabilities.
I now have a mini project that is being supported by a friend for the national RC truck gathering. 4 way junction traffic lights. Code should be simple enough and I will use relays so I can have multiple LEDs running. Without stressing the power for the board.
This will give me a chance to practice some loops, delays etc...
Other than the Arduino site and YouTube is there anywhere else for learning resources.
many thanks
Rebekah Anderson
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Hiya swissengineer,
Thank you for the video. Although not what I was aiming for but I have been looking for that before so very useful. ?
well I’ll I was hoping that the initial post was a good explanation but easy to say for me as it’s in my head.
here goes:
As you can see the boom is telescopic. However LIEBHERR uses a different system to that of others. The telematic system extends from the inner most section as the first to the outer section last. Each section is pushed by a single ram. This locks into the base of the section and moves it up the boom to one of three points. Once the desired position is reached the section is locked in place and the ram is unlocked from the boom section. The ram would the move to the base of the next section and same process is run until the total desired length is reached.
I the model, the same process is desired. Using a stepper motor in place of the ram. This will give me control over the distance the motor will move. Using a board I should be able to program every position referencing home positions for each section in the fully retracted position.
Further more I want to add as part of the script a conditional that allows the pins to be moved only when in position.
Further more I want to use a touch screen to control the boom.
I am hoping that the board can retain last known location for the boom.
The two images show the TFT screen layout and the other is the real boom setup.
I think im going to have to build transmitter and receiver instead of using an existing Rc set.
i will add a switch as you described either at the base or last boom section base.
theres a lot to learn and understand but I’m happy to do it. I am trying to find tutorials but finding the right ones is proving a challenge. Stepper motor is on the way with driver but not sure which Adruino board to use for the vehicle and for the transmitter. I’ve seen the transceiver modules which look fine. I do need to be careful as I will be operating with other RC drivers. So I need to how how can employ spread spectrum and using a start flag on the transmission to link in with my receiver.
I also want to add 2 more pages to the TFT touchscreen for different modes which will allow to select steering mode and the other the outriggers. There will also be stick controls on the transmitter.
hope I managed to convey the idea.
many thank
Bex
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I use both system mechanic and cclean to clear registry. It did work for a month or so but all of a sudden it crashed during usage then wouldn’t start.
Will have to see how I can recover from this. Might have to try and completely erase cura from my computer.
Any tips, ideas what I need to do?
regards
rebekah Anderson
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Hiya,
thank you for your reply.
I design my parts in the scale I look to have. Applying tolerances to avoid exactly that. You’re so right and have tried to find ways around these issues.
The post is mainly aimed at the electronics aspect. The boom is going to be made out of metal for the reasons you mentioned but most of the entire crane is going to be printed.
the stepper motor is going to have a lead screw to reproduce the linear travel.
i know guys on here are all over scripting, adriuno boards and programming so am hoping someone can point me in the right direction.
regards
Bex
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I tried to use explorer to find the file path but it wasn't there hence my comment unrelated because I couldn't find the folder "Appdata" which I have seen before but isn't where I last saw it.
now that you suggested to but it into the address bar I found it but it doesn't state to do so.
doesn't matter I've got it now and it's attached.
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I'm running win10 and the stuff on github didn't relate.
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Hiya all,
I have a project that I want to complete but not sure where to go for technical advice. I have posted on Adruino forum but wondering where else I can go.
many thanks
rebekah anderson
this is the project:
I am building a RC Crane and I am going to use a stepper motor to control the telescopic boom in the way the real crane does it. the mechanics of it is fine. I just need to figure out how to create the electronics.
I know what I want it to do but I am not sure how to achieve it or if it's possible. I do a lot of 3d printing and am looking at using similar principles.
I have attached the design for one of the modes which is boom control created using inkscape. I also want to make a drive control and a stabiliser control mode. the principle input out put is based on normal Radio controlled transmitter where the above is integrated.
It will be a fully customised transmitter so dismantling and rejigging things is accepted.
Boom Control Mode:
The way the boom works on the real thing is each section is pushed out one at a time (see attached image). inside there is a single hydraulic ram that moves a hitching block that locks into a boom section, then releases the boom section from the next boom section via a locking pin. moves it up to a new position (there are 3 positions it can go to for each section) locks it into place and the hitching block unlocks from the section and retracts to the next boom section to lock into it and release it. this is then moved to the next position pushing up the previous boom section along with it etc...
so with the stepper motor I can program each boom section's home position for pick up by the hitching block and I can also program each locking pin location so it knows where to go in order to re-lock the boom section into place.
the attached image shows three buttons for each boom section indication the three positions the section can extend to. I have also included read outs for each section and a total.
1) Can I integrate a TFT touchscreen with adruino board into a modified RC transmitter, use a channel or more to control the boom over 2.4Ghz. and use a stepper motor and an adruino board programmed with the functions I need. I am sure that I can achieve feed back to represent the readouts.
2) Can each move made by the stepper motor be remembered so when I press home it will know the last location of the boom section and go to it lock into it and bring it to the home position.
3) Can it be set up so that if two or more sections are extended that if I press home on a boom section that is further out than the stepper motor can go to that is will home the the sections in revers order until it has home the requested boom section.
Or
Not do anything apart from reporting that it is an invalid command because it's too far out.
4) If the above is possible, what components would I need to achieve this. ignoring cables and connectors, but what boards would be able to carry out the processing of the script, what TFT screen would be ok and what would I need to run the TFT Screen as a touch screen to the suggested board.
I think I have conveyed the idea I want to achieve, but as with all things it makes sense in my head so if I have lost any one who is willing to help let me know what I need to explain further and I will be happy to do so.
Many thanks
Rebekah Anderson
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How do I obtain the relevant logs?
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hiya,
cura 3.1 crashed and now won't start up any more. I tried reinstalling it but but that didn't work. I cleaned out the registry prior to re installation.
any advice would be most great full.
many thanks
rebekah
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hiya all,
I did a little video where I am cleaning the BB Core. hopefully some of you will find it useful. it's crude and unedited but I hope I manage to convey it well
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hiya,
I have found that in Cura 3.1.0 for my UM2+ it won't allow me to change certain values. so far the number of brim lines I can't change, it resets to default. Also the number of gradual insteps for support does the same.
any help is welcomed
in the mean time I have to go back to 3.0.4 for my UM2+
rebekah anderson.
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I use a dremel wire wheel
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for me I wasn't printing large parts 1/4 of the build plate and was adjusting the bed during the start of the print. but when I wanted to print using 3/4 of the bed it became parent that this was an issue. and eventually the cause became know.
if you have been printing perfectly up until now.
level the bed as per normal. then raise the be to 0 and manually move the head around and see where the level issues are. if they are in one corner use some paper to raise that corner to the right level. relevel the bed as per normal and check. I did this a couple of times.
it takes some heat to warp the bed so I can't imagine it being the case.
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hiya,
there is a bad batch out there. This was my original bed. I got a new from the uk importer and it was the same. so I went there and we got a brand new one from their stock and it was the same too. so we took one from a different stock batch (difference was black corner protectors instead of white ones) and it was as close to flat as you could get it.
so nothing you do will make a difference in this case.
however I have still one corner on my UM2+ that causes an issue which I solved with some paper underneath. It's the heated bed that's on the piss though not the glass.
but there is nothing you can really do with a deviation of 0.6mm. you can check this by raising the bed to 0 and by hand move the head around the bed. as you do this be at eye level with the bed and you can see where the height issues are.
with the condition below it's a manufacturing fault so you should be able to get a replacement.
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wow. that's just made me cry. lol
I'll keep my ear to the ground if someone is looking for one.
but if I got the cash I will grab them myself
new year here we come
Bex
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2 hours ago, chuckmcgee said:
Thanks. The 2.40 is coincidental and I have a replacement roll being sent from MatterHackers. As for changing within Cura, I did...not on the material manager but in the profile settings.
I will I’ll report back after I use a roll with 2.85 and with slightly tighetening the stepper tension.
hiya,
there is a roll with 2.40mm filament? never seen that before so it's a first for me. I am hoping that it is physically that diameter. If it measures at 2.85 then that is a problem. the g-code is going to assume that it needs to feed more/faster to provide the same amount of filament. but at the same time if it is 2.40mm then there may be too much space at the hot end and it buckles slightly causing substantial resistance at the hotend.
hopefully you get it solved
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hiya and welcome,
one key factor is moisture. It must be kept bone dry. any little bit of moisture can lead to problems. in my ignorance I had a lot of problems but found solutions to deal with this.
I have a post on here regarding the use of a food dehydrator. So far I've not had one stoppage. I've only used Ultimaker's PVA as the price isn't massively different and it's really good stuff.
Ideal as support, takes a while to dissolve but the results are superb. I have got it to work with ABS but and t-glass but not much else yet.
bex
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Darn it. this always happens. just spent a ton of cash. otherwise I would have had both lol
just out of interest, how much you looking for them?
bex
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Hiya,
I found that the firmware, depending on the G-Code flavour, is the default. I use reprap flavour which overrides this. I found myself stuck where the printer wasn't doing what I set in cura. turns out that ultimaker flavour is printer firmware defaults.
may or may not be the issue.
Bex
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6 minutes ago, SandervG said:
haha you snooze you loose
you better have enjoyed those Jaffa cakes lol
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Hiya and welcome.
I would be inclined to follow the blocked nozzle route. it may not be fully blocked but just old material layering around the inside. there are two things possibly three to try and resolve this issue.
1. poke the nozzle hole with a strand from a wire brush whilst it's hot and dialing the manual feed.
2. position the print head in the front right corner and heat up to 210 deg. using pliers force some cut off pla down the hot end. not too much force though as the axis may pop out. (just place the rods back in.)
3. replace the nozzle with a brand new one. after 2-3 years it may be due a change anyways. check out 3dsolex and give the ruby a try. pretty decent.
hope this helps
Bex
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Darn it Sander, I was going to suggest that. lol
I'd try a lower temp, It gives a wide range from 210 to 235. I haven't printed with soft PLA before but I found blockages are very prominent at higher temps when PLA is concerned so I am kinda leaning towards this idea.
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I am not 100% but in cura it might require the density to be increased in order to cover the smaller areas.
if the graphics are running slower or the processing takes a while you might find that your graphics card is struggling to process the rendering in S3D. change in settings the detail level. This might speed things up.
Cura 3.1 wont start
in UltiMaker Cura
Posted
Hiya guys,
Many thanks. it worked. issue got stranger as 3.0.4 wouldn't render the sliced preview anymore so I couldn't check the print layers.
but I deleted all the app data and any reference to Cura, cleaned out the registry of orphan files and missing short cuts. all my custome profiles etc... were lost but the programs are working as they should be. No Idea what caused the issues in the first place but done and dusted now.
Thanks again
Rebekah Anderson