The Rack Driven Mechanical 7 Segment Display - How To Assemble
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- เผยแพร่เมื่อ 10 เม.ย. 2024
- Download the STL file here: jbvcreative.com/products/the-...
Or get it free as a JBV Creative Thangs member:thangs.com/designer/jbvcreative
For the optional servo attachment, is uses these servos:
geni.us/G8ArjNg
Here is my main channel: / @engineezy
Join my patreon to help support the creation of larger engineered projects:
/ jbvcreative
This is my affiliate link for the Bambulab Machines (they rock)
shrsl.com/2a5d5-2yn7-1cwx9
This is the filament I use: geni.us/sdT9QBj
This is the laser cutter I swear by:
www.xtool.com/?ref=rNX8YcbzlX...
Is it digital, or is it analog? Well it's some combination of the two! The rack driven 7 segment display is a fully 3D printed mechanical desk piece that is equal parts satisfying and bewildering. Turn the top dial to rotate a series of 14 cams which push on a rack and pinion system to reveal a number. Operate is manually, or add a servo motor to the back and have the thing run on it's own.
You could even throw 4 of them side by side to create a clock! Add another two and get the seconds. Give one a randomized number generator and it becomes a dice! Endless possibilities!
The STL File:
Prints on all standard 3d printers, requires no additional tools or assembly, and assembles in seconds.
For servo attachment (not necessary), it used these servos: geni.us/G8ArjNg
Recommended print settings:
Layer Height: 0.2mm
Nozzle: 0.4mm
Infill: 15-18%
Total Material: ~190g
Can print on any sized 3D printer.
**All the files have been pre-oriented to save you some set up time! All you need to do is drop the parts into your slicer and hit print! - วิทยาศาสตร์และเทคโนโลยี
Just finished the build. Wow. That was the most fun I've had 3d printing.
Incredible design!
I am an absolute 3D printing beginner and have had a cheap Anycubic Kobra 2 Pro for 2 weeks. When I discovered your website and this display, I knew I had to have and print the STL files too. That's why I bought them as soon as they were available. I am so fascinated by the symbiosis of technology, design and art. After a few difficulties, I printed and assembled the first display in 3 evenings. The result is just wow!
I will certainly finish the next display more quickly. I'm already looking forward to building a servo-controlled TH-cam subscriber counter together with my son.
Keep being creative!
Greetings from Hamburg, Germany
Damn... Now I know what I gotta go and make...
Thanks. Here I was just trying to watch some TH-cam before bed. Now my head is swimming with projects to use this for... 🤦🏻♂️
😆🤣
I totally understand the feeling haha
Loving this build! Everything went together perfectly! My 7 year old cant get enough of it.
I just made it! It’s super nice! The only issue I ran into was that the C-Clips for the Detent was interfering with the Top Plate making contact with the Back Plate. It was a little difficult but I was able to rotate the C-Clips so that the open part of the C aligned so that it didn’t interfere with the Back Plate. Overall though it was a fun and easy print, and it came out great!!
Going to print 3 more when I get the chance to make a clock!
Just caught that! Sent an update with a slightly altered detent/top plate, fortunately the old files don't affect the functionality of it!
Want to print but could you post a tutorial for the servo and controller cause there’s a lot out there and I would like to know how to use it for a counter/timer/clock without spending hours scanning the internet and/or buying the wrong parts. I understand if you don’t have time
any way we can get a step by step PDF for instructions...the video is nice, but too fast for us older folks. I would love to give the bag of parts to my 73 year old dad, but not tell him what it is or have him watch the video 20 times.
One day when I have an intern I can definitely make that happen!
@@jbvcreative2nd taking on any interns ?? I’d be ready to whenever you want
You just gotta lemme know.
!!!!!!!
?!?!?!?!?!?!?!?!?!?!?!?!?!
@@jbvcreative2ndwhy not sell this like a kit to build and add some apps for us to tinker with? Like a kill count timer for live streamers or just a normal clock for gamers. Just add a bit of led then I'm pretty sure this will be so popular with everyone. I would love to have one but don't have any 3d printer or time to use one if i ever buy it.
finally finished printing and assembly!
Such great designs and I appreciate that you even show the assembly, I haven't bought a file yet but I really want to one day, they're so interesting
I appreciate you watching and all the support!
Just finished assembling two. This is fantastic! Making a clock, so two more to go.
Excellent file, Enjoyed building this and really want to make it a score board with adding up or down by a button or two and reset back to 0. Not sure how to code it, but thats part of the journey right! Appreciate the how to build video and everything!
Yeah I'm supporting you my guy. This is awesome. I think I need a new garage clock, and I dont know if I need more of your designs, but needs are irrelevant really. I'll be buying several. Keep doing stuff, thank you, you're awesome.
This would make an awesome clock!
Agreed!
I'm on it. Hopefully. File purchased, printer warming up.
GENIUS, bought it right away. Thanks!
Thanks so much! Enjoy!
great project, can't wait to start it ! Will you make a tutorial about the coding part ? (yes please)
defintly looking forward the clock 🔥
Great engineering on this one. Twas really fun to put together and show it off.
Glad you enjoyed it!
Just an assembly note at 3:05, when attaching the D10 clicker piece to the front plate, orient the openings of the c clamp towards the nearby pegs on the front plate, otherwise they get pinched between the top and bottom plates when assembled and creates a gap so the two plates can't be clipped together. I adjusted the c-clips after the assembled camshaft was fully into the followers, but it'll be way easier to orient them before jostling it into place.
Edit: I should read the comments, looks like you've fixed it already, thank you! I downloaded the files same day so I still had the original design.
awesome build
Incredible work. So smart and compact. I hope it sells well for you
This model looks so neat! I am printing it right now, looking forward to assemble it
Appreciate the support! Your work is amazing :)
how much time will it take to print all the part brother
Very fun project. Thanks!
Thank you! Appreciate the support
Lol bro I literally just made your mechanical counter. I literally already downloaded a seven segment model to create after the mechanical counter but i just found it funny were creating the same things! :P Thanks for always providing us cool designs!
That is awesome! Thanks for the support!
Brilliant! Amazing engineering.
Thanks Michael!
love it thank you so much for the enjoyable project
Glad you enjoy it!
This is amazing
Thank you so much!
I hope someone starts selling these, I don’t have a 3D printer 😔
Just started printing this myself…it’s fun but one hell of a process. Not sure it would be worth someone’s time to try and mass produce it
Looks amazing! Printing all the files now! I notice on your shorts that you have made a clock with it. For the electronics is there a hardware list with wiring blueprint and a copy of the code? Would love to make a clock!
so, does it matter what material we print this with? esp. wondering if the compliant part in the detente is okay with PLA
EDIT: never mind, I found it in the text file. PLA!
if theres some way to run a wire behind each number segment you could have illuminated segments. Imagine that green watch indiglo look.
Thank you so much for the design, very much worth the little money you are asking for. Just finished the 3rd one and started with #4 to finish my clock - just hours and minutes.
However, I am wondering if there is a particular reason for using servos instead of stepper motors? I have no experience (yet) with either one of those but I could imagine that the wear on the parts is lower if the system keeps turning into one direction instead of jumping back from 9 to 0 all the time?
Also the servo gear has a lot of play and tilts within the servo mount. Is there an option to give it a better fix?
Again, thanks for the great work and I am looking forward to hear from you. Cheers!
That was cool!
Dude. You and these C clamps lol. I’m about to start practice using them.
this is amazing! i am about to buy my first 3d printer -- bambu a1 mini. i would love to do this as my first project (as long as my printer can do it lol) ❤
I just bought the Bambu X1C if the A1 performs at all close to the X1 you will be fine.
Yes a big clock
to mesure the procrastination time !
Lol !
Haha for sure!
By definition this is digital. Just thought I'd point that out since you ask. It is digital because the output is designed to have discrete states.
I love it
The only problem I had were the cams. One of them didnt fit so I had to remove some of the gaps. It works now though!
As you update the file package, are you also updating the pre layout files? My clock assembly (and drive shaft) are so damn tight that its practically locking up. Trying to figure out what the cause here is (and if solved in newer versions)
Ooooh this is interesting, seriously considering going for it - did you print these with PLA or PETG?
Very nice project but I saw several times the vidéo to assembly but not yet
Pdf Will be apreciate for sure
Thanks by advanced
adding on to my last comment, this is really cool! have you considered extending it so a single turn counting up numbers beyond single digets?
Great model, print in progress!
Btw, Thangs member link needs to be updated on video description ;)
Print done - flawless model.
Everything fits perfectly & clear instructions. Already looking for next model!
Can we get one that adds AbCdEF for hex decimal use? That would ve interesting.
did you use any kind of code to make the clock work ? i saw it in your short video
thanks in advance :)
What’s the combined printing time per display? Very cool !!
Can you please share what you are using to drive the servos (around 6:08)? Would this work without the clock module if you attached a Arduino Nano with WiFi for clock sync?
Do you have a write-up on the code you used for the servos by chance? I have a RPi sittin' around that could use a job :)
One thing that's not immediately obvious is that the cams go on numbers down when you're holding it upside down. I guess it makes sense, but if you ever remake this, be nice to make explicit.
I broke some things and had to take the first try apart again - here's to try two
So the number 1, 1i, 2, 2i and so on on the cams all go towards the dial knob on the shaft? Its hard to tell on the video and i thought some went up and some went down and broke my first one.
Could I use an SG90 for this too or is it not strong enough? I’m new to this, so sorry if it’s a dumb question 😅
How long is the printing time on your bamboo or other printers?
Hey, great project! I have a few questions:
What boards are you using? ESP32? and do you have instructions for programming a clock?
Unfortunately there are no instructions in the folder I bought
Greetings from Germany :D
Thanks for very beautifull project. I have buy stl and realize now your project. if have more project on same style, for examples with letter and number please inform me.
The file rack side only has one side of the rack? It's only for the segments on the right.
Love your content JBV, amazing project. I'm currently trying to assemble it and I just have a couple of comments:
The text file says it does not require any supports, but the video does (so I guess it's fine as long as people watches the video before printing).
The other one is that some tolerances are really thigh, I had a bad time inserting the racks in the side followers, and then the cams into the shaft where almost impossible to insert. When introducing the shaft into the side followers, I had to force it because it wasn't possible and ended up breaking the shaft. Will try to scale it down to see if that helps.
Anyway, thanks for sharing this! Will be following along when the tutorial for the clock is ready :)
Thanks for the comments, updated the text file and just sent out an update with larger tolerance parts. This is super tricky to get right because too much tolerance can result in lose parts on some printers while being too tight on others. Hope the update helps! Thanks for your support!
@@jbvcreative2nd You are the best man! How can I download the updates? Do I need to purchase the files again?
I am planning to buy could i get the code for motor and components need for working could you make a another tutorial for programming the board
Hi there, got this off thangs, i couldn't find the picture you mentioned about the followers orientation, there is just the part list and some .ino files. any chance of linking it?
Can a resin printer work for these items? Meaning, it doesnt require any "give", so I can build solid prints with my resin printer? My FDM printer is down and out and I need to buy a new one as I can't figure out the issues with it, but after a solid 4 years, I couldnt ask for more out of her, lol.
Just started printing the parts. I had some issues with the front plate. The little extensions that hold the pins are very narrow and one fell off. I tried to CA glue it back on but no bueno. Do these extensions with the holes need to be so delicate? I fear that some of the other will not hold up to the operation of the unit.
how much time that you spend on print all the part ?
1 built. 3 more to go. Now researching arduino or RPi. To see which i want to drive the 4 servos for a clock.
I have bought the file,instead of the stl in the root folder and serve attachment folder,there are many other stl files in another folder,such as "counter add on""clock add on",etc..Should I print those files?what's are the founction of those file
Is there a way to just buy this, printed out?
How did you make it a dice?
Hey, amazing print! However I am having trouble getting the cam shaft into the followers. I can get it almost all the way however it just will not go anymore. Does anyone know how to fix this?
Lots of luck, IMO. I think it actually makes sense to put it together with the cams going through the followers before you put the back plate on. But I figured that out too late. I was able to get it together, but it took 30 minutes of trial and error, and a lot of pressure, to get it finally snapped together.
Could you split the multi colour bit into 2 different files. So u can glue the colours in instead of filament swap cus I suck at that lol
Thanks for this super cool design, i just finished printing and assembling, but i ran into an issue where the shaft seems to be a bit too long and the Cams are not able to align with the followers, making it unable to turn smoothly , super hard to turn the dial and can only turn it few clicks each direction, i can see all the white pieces (Cams) are not aligning with the followers. not sure what i did wrong here.. i can even tell from your video at 3:51 that there is barely any bit of the shaft left to insert into the black plate, mine shows 10mm or so of the star gear on the shaft still.
Yep, me too. the camshaft seems too long. Ive reprinted the shaft again, all the followers and meticulously follwed the video. Cam 7 and 7i sits just above the last rack piece, with the camshaft fully seated into the hole at the bottom... Im going crazy (and running out of filament....)
@@AzTheCreator i ended up modeling a bunch of spacers and kept putting it on and off to see where it needs a spacer to help align the followers and cams, works, but still glitchy
@@TeslaDIY same thought as I had last night. I can see the issue is around the gear and spacing of can 4 - I think I’ll follow your lead with a spacer for sure!
Hey @TeslaDIY - I've found a 3mm spacer between the Cam gear and Cam 4 aligns everything just about right. I did a dimensional accuracy on my printer and its just about right so i'm really not sure where the extra 3mm came from. 05mm -1mm would have been ok, but it is a large gap at 3mm. Maybe it's me, as a lot of other commenters are not reporting this issue. Just you and me... Anyway, works now
the 7i piece isnt attached to the main middle piece, is this correct?
This is incredible! What’s the estimated cost in materials for printing?
can't be much. PLA is cheap for a kilo and this doesn't use much of a reel. I'd say it couldn't be more than 1/6 of a reel if that much. So less than $5
How do I know which piece is which?
Within the STL Zip; Could you provide the 3mf for the colored pieces?
I have a 3mf file i could drop on drop box if you want it....using bambu studio i was able to get 3 layers of white so no bleed through of the black while keeping a nice black border.
At this time you display 10 numbers. Would it be possible to improve the model in order to display 26 letters ? Or is there mechanical limitations ? Be able to display a message open the path to many ideas. Where numbers are somehow limited.
Hello, I am in the process of printing your creation.
I would like to make a watch but I don't know how to do it with arduino, can you provide an explanation ?
Thanks a lot.
Hey so I was wondering, in your build process did you have issues with any of the gears skipping? The arm holding my free spinning gear on the servo mount seems to almost bend at times and the servo travels up the side of the camshaft gear causing it to skip on occasion?
This happened to me too. Seems like there’s too much play/slop in the center gears spindle and possibly the servos mounting bracket may be too loose. My gears seem to bind and skip teeth, or just not align all the time.
@@stevekeller1 yeah I’m looking into ways to fix it but no promises I’ll find much lol
Can you include in the files the inlayed 2 color segments? You have white on black here. In the instructions you act like you can just have the first layer be white, but that's not what you have in the video it's clearly inlayed.
this is great but know idea how you got the cam in with out braking it, its a good design and everything but you need to put more thought in to how someone will build it, i should not be this difficult
Ive put together one of these. However my cams seem to have a lot of play. The top cams can fall down far enough to bind the whole thing. Any ideas for fixing it?
Mine doesn't act like that....did you happen to forget the gear part after cam 3i
I keep breaking the rings on the front plate by accident when trying to attach the racks to the followers. Any tips to make the base plate rings sturdier?
Same problem. Those 'rings" seem way too flimsy.
I printed it twice, but unfortunately I had a lot of play between the rack and pinion, so the segments wont fully close and fully open. It will skip tracks sometimes causing the segment to hang open and not fully snap closed. I printed it twice and had the same issues both times, maybe it's just me, but that was upsetting. Basically like he explained @4:55, I line up the 4th pinion with the 4th tooth on the rack but when I cycle through the numbers some of the segments jump cause of the wobble and now the 4th pinion is on the 3rd rack...anyone else have this issue?
Just finished the assembling, its nice but my one just isn't easy to turn
Might need to just make sure the cams line up with the followers! Thank you for the support!
If i buy it from the site i got the clock asamblatet
Hey just wanted to reach out and let you know that I modified the Central Clock Connector to feature an actual attachment point for the electronics. I secured the servo board with 4x M3 screws and the RTC with 3x M2 screws. I tried to copy your design style and I feel it really cleans things up. I'd be happy to share it with you / others if you'd be interested.
yes please! Everything was going really well for me until I had to do the servo. Same stuff that you experienced with the central gear skipping
@@torrentisimo yeah I never really ‘fixed’ that per se. I just kinda kept messing with it and reprinting parts until it worked.
@@supermomandj same here. I brought the servo mount to fusion 360 and modified it to accommodate a 608z bearing where the middle gear goes now. However I’m still experiencing issues while moving the servo. I need to do more test with one another from the batch I got
@supermomandj I’d love an STL of the modified central clock connector. I’m also having issues with the servo mount and central gear skipping teeth. Any suggestions on how to fix that?
@@stevekeller1yeah no luck on the skipping still. Thought I fixed it but I guess not. Experimenting with some things still trying to fix it.
I predict a wooden version will be built soon.
Superb bit of design, but MY GLOB was it frustrating to get the central spindle through into position!
right? I used ABS and all the cams were just slightly thinner due to shrinkage. That made this step a nightmare. I think having a good print is key.
DO NOT make the same mistake i did and put a brim on it. Also this video is real fast so triple check orientation.
just broke it at the last few steps - the tolerances were so shit for my print
I printed the whole thing and everything is kind of perfectly fitting but I can't fully rotate / get all numbers in any way working. It can only turn the knob 1 or 2 numbers and then it stuck.
Everything is perfectly aligned / straight I double and tripple checked all numbers but it will simply not turn fully round.
I just ran into this, and found two problems: a groove on my print bed left a small bump in several of my Followers, and so they snagged on the square holes. Also had some Cams that had curled during printing, resulting in them stretching too far up or down and snagging the wrong Followers.
Sanded the Followers, reprinted the Cams; that fixed it for me.
@@SeekerPsycho1 yeah I got it working. Not totally sure what the problem was but after some fiddling everything is smooth now! Great project.
im having a really hard time getting the shaft into the casing
It's definitely the trickiest step- keep on jiggling the casing back and forth, you might need to pull the shaft out a touch and try to spin it before getting it back in. It will go!
What’s the printing time per display and what printer did you use ?
About 10 hours per display on a bambu x1 carbon. Uses a few build plates so you have to clear them a few times.
@@stevekeller1 How did yours come out on the carbon? Just got it myself a month ago and its been printing these clock segments so well.
@@Jaykav99printed perfectly and assembly was smooth. Only problem I have is the servo mount seems to have too much play/slop and teeth bind and skip gears. I’m currently printing the mount with 100% infill to see if the rigidity helps. I also may try gluing the mounting bracket to the back instead of just using the 4 posts and c clips. Last effort will be redesigning the gears
@@Jaykav99I’ve had my x1 carbon for 16 months and have zero complaints.
Did you sell that $20?
Excellent work! What a great sound.
Just to be pedantic, those "C clamps" are actually called snap rings, or retainer clips.
They're actually not snap rings. If they were snap rings, they would have the holes for snap ring pliers. They're 'C clips' being in the shape of a 'C.'
I'd love to help you button up the documentation if you're interested
Build the LOST clock and computer to type the code into. 😂😂😂
I would love to see a modification to the flaps: Couldn't you create the white part as inlay, so it can be printed separately with white pla and inserted into the flaps black frame? Would give the same aesthetics of your print to people with only one extruder...
I was able to separate the two parts....I can drop the stl file on drop box if you want to give it a try.
@@Jaykav99 I would love to give it a try!
@@hopsenrobsen Looks like youtube deleted my comment with the link, I see you have a email on your channel...how about I email you the link?
@@Jaykav99 This would absolutely work for me! :) Thx a bunch!
@@hopsenrobsen Ok on the way it includes all of the flap pieces as one stl and they will prob import as one part but you should be able to separate in your slicer so you can print one at a time. Email subject is Clock Segment File Link
Here is another 7 segment counter which has a lower part count and it's more compact.
I haven't built either design to see if one performs better than the other though.
th-cam.com/video/q5hJP_6xUcU/w-d-xo.html
Brother, please start selling these.
Sell them assembled
i assambled it and its not even close to working correctly
@JBV Creative Builds, Tutorials, and Reviews would like some help
@@fass0543 ive built two so far that work perfectly...without some details i would say the gear setup is wrong or the cam setup is wrong...also if you had to go crazy with brims or anything, that makes the build really rough...my first prototype build was horrible. if all of that is ok check to make sure the tooth on the segments is actually sitting in the first tooth of the gear.
I will try, thanks!
Nice video and very cool project BUT... those are not 'C clamps.' They're 'C CLIPS.' Please note that what you're using isn't actually clamping anything but they are kind of 'clipping' into place. Google 'C clamp.' You'll see the difference right away.
I'm going to expect you to deliver it for free, not because I don't value your effort, but because I live in Latin America...
Hey before I buy the 3d printable files I got a quick question if I wanted to make it display a social media files what would I need to do that ( servo, ????,???? ) and where could I find all the code to do that