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@samithetechsavvy6485 6 күн бұрын
Thank you very much man
@LyndaH-vw9xi 22 күн бұрын
The irony is the video dragged quite that much slower than any pneumatic bike could ever…
@joenic4303 Ай бұрын
Thank you!
@jacobmiller9468 Ай бұрын
I got to know! Did you ever make this work well?
@SocialDeviant_ Ай бұрын
Can I buy some of those?
@kljw66 2 ай бұрын
Hi Paul, did you ever change the cooling duct to suite the longer nozzle for belt printers??
@Cooper-gn2hn 2 ай бұрын
What materials did you use and where can I buy them
@murraymadness4674 3 ай бұрын
There is no need to modify the motor at all! Just ignore the middle red wire and use a bipolar controller and the two coil ends and it works exactly the same!! Well exactly the same as the described modification, but it is not the same, because now you are using double the length of wire, and so double the resistance and half the current. You can make up for it by doubling the voltage to 12v. If you are going to modify it, what you really want to do is double up the wires so you have half the windings like before, but twice the copper and thus have the same resistance and hence current. You can do that by taking the two coil wires in the middle terminal (the mid point of the coil) and connect one to the end, and the other to the start. If you don't do that, cut the middle trace to one coil and add another "red" wire into the "middle" of the other coil, and now you can use only half the windings and run it bipolar and have the same performance as unipolar. I have also noticed the coils only fill up half the motor, so you could just rip out the coils and put in a single winding of a thicker wire. I'm converting one to a servo and need the shorter motor this has. The "short" servos are like $50 to buy.
@PaulChase 3 ай бұрын
Look at the circuit diagram - unmodified, every coil is connected to the ground in the middle - you can drive it from the ends to the ground, but without cutting that connection you'll be running at 1/4 power. You also can't do microstepping cuz the current would be flowing from one coil through the ground leg to the other coil
@Hairfire 3 ай бұрын
Cool video but really as a beginner I have no clue what you are talking about. Please explain what exactly happens now with this motor. How is better and for what purpose? And if I cannot use my controller anymore then how can I control it now? I'm looking for my motor to be able to go forward and backward, and I am making that project now. Can this video help me? Thanks.
@PaulChase 3 ай бұрын
Making it bidirectional really increases the torque and lets you control it smoothly with microstepping. It can go forwards and backwards before being modified, though.
@tba3679 2 ай бұрын
Ok so I got a A4988 and am willing to try. Am just a bit confused of wiring and code..
@grahamnichols1416 3 ай бұрын
What reference voltage did you set your A4988 drivers to limit the current for driving the bi-polar version please?
@mirono3099 4 ай бұрын
Why 22.5*? U like it more?
@PaulChase 4 ай бұрын
The nozzle is 22.5 degrees from the bed AND 22.5 degrees from the print plane - splitting the difference. Helps with bed adhesion and print quality, so, yes. I like it more.
@ljay0778 4 ай бұрын
Does it run??? Why now show it running?
@PaulChase 4 ай бұрын
Yep, it does run! Four of them are powering this printer: kzfaq.info/get/bejne/abqJlNqrncfLe3k.html
@dave20874 4 ай бұрын
Nice build!
@walterlewis1029 4 ай бұрын
Hi Paul I noticed the 6 is upsidedown not on the pink one but the other one with orange numbers.
@PaulChase 4 ай бұрын
I did notice that while editing 😅
@zhenhuiwang3381 5 ай бұрын
Hi, should we swap the cables addtionally? yellow and pink?
@unlock-er 5 ай бұрын
i've hard orbiter 2.0 for a while now, only been printing PLA, ASA and ABS, recently, I tried TPU on this and it's clogging like crazy. Not at the nozzle but at the extruder side. never had this problem with sprite.
@radosawk.4421 5 ай бұрын
an upgrade is possible with activated carbon filter for volatile chemicals adsorption, one sheet is ok right under the fan
@denizcanbiroglu2846 5 ай бұрын
I did this but the engine is running hot, how to fix it?
@PaulChase 5 ай бұрын
in your start gcode, add: M907 E400 That will set the extruder motor current - if it's still hot, you can go to M907 E350, and if the motor skips you can increase it instead.
@vladimirjar3800 5 ай бұрын
I can probable get a list from vick oliver
@matthiasmartin1975 6 ай бұрын
Ah, retro 3d printing content, my favourite! Thanks for the history refresher. BTW, it seems that the Mendel-90 did solve almost all the issues with the original i3 design you have there. In my opinion the whole "threaded-rod-aesthetics" was a dead end.
@PaulChase 5 ай бұрын
I agree... and for the majority of my 3D Printing, I replaced the threaded rods with a laser-cut frame and had a very fine printer. I never dismantled the first one, though, since it still printed pretty well.
@TGAW3D 6 ай бұрын
Fantastic project *and* video, Paul! I hope to see a version of your clock on the wall next time I visit NovaLabs! Also that Terracotta PETG is indeed nice. I might have to grab some for myself!
@RealSnail3D 6 ай бұрын
🎉
@ericwright3382 6 ай бұрын
0:45 - a Darlington transistor is just a high power transistor. ???
@PaulChase 6 ай бұрын
They're wired as one, but on the silicon it's two transistors with their collectors chained together, for higher current gain. You can build your own with any two npn transistors, but they're useful enough that the ICs are cheap and readily available
@ericwright3382 6 ай бұрын
It just sounded like you were saying Darlington pairs are high power or control high power. Certainly there are many lower current Darlington pairs. Their configuration is for high current gain, that is what Mr. Darlington achieved.@@PaulChase
@darmichar73 6 ай бұрын
You paid over a grand for the printer but you hack up a $15 PEI plate with a pair of garbage shears to "improve" it?
@PaulChase 6 ай бұрын
😶🌫
@knight2255 6 ай бұрын
What driver do you recommend for these bipolar motors?
@wipoute 6 ай бұрын
Any bipolar driver that can handle the current these motors take (which is not a lot) should be fine. A4988 are very popular for this purpose.
@PaulChase 6 ай бұрын
I've run these even with the fancier Trinamic drivers - 2209 and 2130 - but with the built-in gear reduction on the motor there's really no need for higher microstepping, but they can still do endstopless homing, which is nice.
@skaltura 7 ай бұрын
I have quite a bit more original Prusa Mendel. No screen, no SD Card, hand soldered RAMPS, Wade's extruder. Tho it had some replacement printed parts, some of which design changed between and now are not aligned properly, so finding the original STLs would be needed, i think even back then it was a bit messy and accidentally used i guess v2 parts for Z gantry or something like that? Version control didn't seem to be much of a thing back then. Haven't even powered it on in 5+ years, but i keep it around still.
@PaulChase 7 ай бұрын
I think mine has a birthdate of June 18 2008 - but it's been updated many times since then, a true Ship of Theseus. Keep the RepRap flowing! I try to bring it to modern festivals just to show how far we've come.
@atoshun2624 7 ай бұрын
Hello! How to set 22.5 degrees in the slicing program? Which slicer do you use for the cr-30?
@PaulChase 7 ай бұрын
Mostly Ideamaker - but don't change the angle in the slicer, it's still printing at a 45 degree plane. This just changes the angle of the extruder to be more bed-adhesion-friendly.
@atoshun2624 7 ай бұрын
@@PaulChase Ok, I understand and thanks for the info :)
@atoshun2624 6 ай бұрын
I would also like to know how you solved the wiring of the extruder motor? It works backwards with whatever cable is added. Thanks.
@PaulChase 6 ай бұрын
@@atoshun2624 Mine was wired correctly from bondtech - but with any stepper motor, rotating the connector around 180 (plugging it in backwards) will reverse the motor
@atoshun2624 6 ай бұрын
Thanks, I managed to do this too :D@@PaulChase
@chris1232123 7 ай бұрын
Surely the limiting factor is the amount of sunlight in the day rather than battery capacity? In winter you'll be at deficit each day so swapping for a bigger battery won't make much difference
@PaulChase 7 ай бұрын
Sounds like math... But you can approach it from both directions. I never calculated solar input, just that the lights were dead in the early morning when I went to work - so I calculated how much battery I needed for the LEDs to run all night
@chris1232123 7 ай бұрын
@@PaulChase but did the lights stay on all night every night throughout the winter too?
@tiennguyenhuu8061 7 ай бұрын
Thank for giving this problem. By the way, I want to know steps/re (out shaft of motor) in this case (unpio is 64*64 step/re) give me this number. Tks.
@PaulChase 7 ай бұрын
The manufacturer says 2048 full steps per revolution, which is full-steps assuming it's got an integrated 1:64 gearbox. The motor comes in different variants with different gearboxes internally, though, so best to check. Also, your steps per mm will be higher if you use a modern stepper driver that implements microstepping
@tiennguyenhuu8061 7 ай бұрын
@@PaulChase Tks! Yesterday I test on arduino uno and It is 2048 step/revolution. It's right as you said. Tks .
@tiennguyenhuu8061 7 ай бұрын
Parametters of configuration need caculation and experience. Give me these para...
@illusionmanager 7 ай бұрын
do you need to double the voltage to use it like this?
@PaulChase 7 ай бұрын
Nope - it will draw more amps per turn, but it's such a small motor that nearly any stepper driver can handle it.
@illusionmanager 7 ай бұрын
@@PaulChase V = I * R. If you keep V the same, and double R (because you now have two coils in series) the current halves, not doubles. Or I'm not really understanding it.
@neuralDEEPnet 7 ай бұрын
Awesome will instal soon for sure
@xalwine 7 ай бұрын
With the time lapse at the end it reminded me of my dog panting after a good run, then it began ejecting a print and it suddenly looked a lot more like retching. Truly cursed and I look forward to seeing even more.
@snipermax 7 ай бұрын
You can install a compressed air nozzle on the side, and use an electromagnetic valve to control the switch of the compressed air. When the printing is completed and the PEI film rotates, it can blow forward with compressed air, so that the parts detached from the PEI will fall forward under the table instead of dropping into the gaps under the machine.
@modern_DIY 7 ай бұрын
Isn’t it loud in operation?
@PaulChase 7 ай бұрын
Oh yeah. It's super irritating, and I'll move to the shield once I'm tired of annoying myself
@eriktronic101 7 ай бұрын
Also add googly eyes
@eriktronic101 7 ай бұрын
Try printing a living hinge tongue. Designed my own watchband using that method at 1mm thick and been wearing it comfortably since.
@PaulChase 7 ай бұрын
That might be quiet enough to not drive me insane... I thought about TPU but was worried that it'd be too flexible
@mmiscool 7 ай бұрын
Ready for some ice cream.
@austinjohnson3977 7 ай бұрын
very cool, my senior project is a hydraulic bike and we have some how implement a pneumatic system
@Stevonz1234 8 ай бұрын
How hard would it be to change the code of a program to make it useable for bipolar?
@PaulChase 6 ай бұрын
You need to change hardware to go bipolar. Normally these motors are controlled by turning on 4 transistors in series, one per coil, circuit is transistor->coil->ground. Bipolar, the coils run both ways - so you need an h-bridge per coil (two per motor) which is basically 8 transistors. Generally you use purpose built stepper drivers, which do fancier switching and more efficiency
@noxin75 8 ай бұрын
Nice! Glad the key retractor idea worked out for you. It does look like the ptfe tube guide needs to extend out a little bit since the cable is getting caught on the bed and making the gray gear shift during extraction. Maybe a guided 90 bend so the ptfe tube is a little more rigid.
@PaulChase 6 ай бұрын
Thanks for the tips!
@mmiscool 8 ай бұрын
Keep it up. Need to add an apron to the front of the printer.
@elmonni2103 8 ай бұрын
hahah this dude is a fool, coping hard 🤣🤣🤣
@PaulChase 6 ай бұрын
Don't be so hard on yourself :-)
@christianbureau6732 8 ай бұрын
Besuty
@1620GarageAndFarm 8 ай бұрын
Get video !! I have been printing for just over 10 years ... I should totally do a video with my older printers and do a little time line. I love your autographed power supplies !! I would love to have that in my collection.
@PaulChase 6 ай бұрын
That is awesome! I take the Ancient One to RepRap festivals and try to park it as close to the Vorons as possible... Really shows how far DIY has come
@LimpiezasMyG 8 ай бұрын
I love the printshift! has tough competition with the pancake belt now in my heart!
@PaulChase 8 ай бұрын
I was going to post a disassembly of the pancake bot but the hotel staff kept interrupting
@jaesaber8883 9 ай бұрын
Im planing on building either version 4 or version 5 when it comes out. I am having trouble finding the .2 mm kapton film for the build. Your link in github takes me to a 0.1 mm Kapton film, the next options would be a 0.18 or 0.225 mm.
@PaulChase 8 ай бұрын
I would go with the .18 - flexibility over durability. For larger rollers thicker is better but the PrintShift is trying to be very compact
@AwestrikeFearofGods 9 ай бұрын
Very clever. What were your concerns about the string, specifically? You could route it through a Teflon Bowden tube if you wanted to protect it from fraying, but that would add a bit of friction against the inside of the tube. Otherwise, you could route it around small pulleys. They could be as small as a 608 skate bearing.
@PaulChase 9 ай бұрын
Not the string so much as that it's just dangling could easily catch on something. Routing it is a little challenging cuz it's only tensioned for about 20mm of Z travel, and needs to coil up or something out of the way for the rest of printing. Pre-tensioning it with a key leash, adding some pulleys and guides would sort it out
@jaesaber8883 9 ай бұрын
Hers an idea , not sure how to implement it. Two way linear motion into one way rotation. kzfaq.infoSPQk_ymBOTs?si=khy73PKFG-C4O4mS
@noxin75 9 ай бұрын
Thanks for the video, definitely showcases the feature! In terms of a replacement for the string, maybe a key leash? Like people used to keep the ptfe/cable bundles off the beds of larger printers a few years ago?
@PaulChase 9 ай бұрын
key-leash is a great idea! Main issue with the string is the slack, but those are also meant to be durable - key leash plus some guides'd do it nicely.
@johnnysun6495 9 ай бұрын
Can you show it running in normal speed? I literally can't see anything in the time lapse
@PaulChase 8 ай бұрын
I posted a new one, from ERRF :-)