I make this mechanical big display and I want to share with all you
It is make with laser cut mdf.
Thanks for watching!
GO_zalo:
I make this mechanical big display and I want to share with all you
It is make with laser cut mdf.
Thanks for watching!
In the US, MDF means "medium density fiberboard", a wood product from thin to very thick. Your display looks like plastic or paper.
Is the control of what is displayed an Arduino? Are you using stepper motors or regular DC motors. How does your program know when a letter is centered?
More description is needed if your port is to be of benefit to anyone.
Paul
Mdf means the same at all the world. The structure that support the motors and the cylinders are made of 5mm mdf (future should be 10 mm). Numbers are printed on paper (future it will be a continuous 3m long paper which all the number from 0 to 9)
This is arduino forum. Obviously is controlled by arduino (mega, with ramps )
This is stepper motors, the positioning systems is to count the number of steps needed to reach and centre each number. First time do it by test /error then record test position of each in firm. (Future I consider to add cny 70 and print a little square on paper)
Nicely done! Can you add a reflective mark on the back of the paper and a sensor to detect when the paper is centered? Can you use just one stepper with a belt to the other spindle?
Paul
Paul_KD7HB:
Can you add a reflective mark on the back of the paper and a sensor to detect when the paper is centered?
Yes, is the next step.
Paul_KD7HB:
Can you use just one stepper with a belt to the other spindle?
No I can't. It's because for pass from 8to 9 for example the upper spindle not to do the same turns that the down one because one have the bigger diameter than the other due to have more rolled paper. Sorry my English is not enough good
GO_zalo:
Yes, is the next step.No I can't. It's because for pass from 8to 9 for example the upper spindle not to do the same turns that the down one because one have the bigger diameter than the other due to have more rolled paper. Sorry my English is not enough good
Keep us informed on your progress. There must be some commercial use for your project.
I wondered about the belt drive and spindle diameter changes, but didn't know how many turns of paper you had. Have you found any plastic sheet material that would make a continuous flow of material? I see you used a computer printer to print the single digit per page. Do you have an artist friend that could paint a series of pictures for display?
Paul
Paul_KD7HB:
Keep us informed on your progress. There must be some commercial use for your project.I wondered about the belt drive and spindle diameter changes, but didn't know how many turns of paper you had. Have you found any plastic sheet material that would make a continuous flow of material? I see you used a computer printer to print the single digit per page. Do you have an artist friend that could paint a series of pictures for display?
Paul
It will be only 10 pages but the effect of rolling it in 50mm tube are significant in change of diameter.
I own a plotter I can change the tool and put a pen and draw numbers in 3m long continuous paper
The artist version is also possible for example I can put a comic or a entire booif I have enough money and paper hajaja
There is no need to roll the old sheets onto the tubes.
Simply let them fold in the back, exactly like those old perf card readers.
If you let them fold in a vertical position (meaning, not folded onto the table but behind the display) you could actually go back to 0 after number 9.