Monson's Servo Auto Scanner
Moderator: peterZ
Monson's Servo Auto Scanner
First test of auto page turner prototype.
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- Posts: 63
- Joined: 29 Dec 2010, 14:51
- E-book readers owned: Nook, Kindle DX
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- Country: USA
- Location: Sandusky, OH
Re: Monson's Servo Auto Scanner
That's pretty darn impressive! Might not be perfect (I saw one missed page at 1:30), but it's a workable prototype. Good work!
Re: Monson's Servo Auto Scanner
Very impressive. I wonder how the servo's connected to the v-shaped page hold-downs know when to stop when pressing down? If they just kept pressing down wouldn't the servo burn out after a while?
Re: Monson's Servo Auto Scanner
That is really cool!
Is there any way we can get a close-up look to see the movements of each piece??
Great Work
Is there any way we can get a close-up look to see the movements of each piece??
Great Work
Re: Monson's Servo Auto Scanner
Thanks. Yeah the presser servos start to heat up after a while. I ordered some cheap servo savers. Other issues: Gonna need smoother cradle bearings to keep the book centered. The book in the demo has super nice paper. This gizmo has a harder time with stiff or too thin paper.
- daniel_reetz
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Re: Monson's Servo Auto Scanner
This is incredible work. I am overjoyed... very impressive engineering!
Also, I can highly recommend cheap skateboard bearings for linear motion. They are incredibly smooth and precise and cost very little.
Also, I can highly recommend cheap skateboard bearings for linear motion. They are incredibly smooth and precise and cost very little.
- daniel_reetz
- Posts: 2812
- Joined: 03 Jun 2009, 13:56
- E-book readers owned: Used to have a PRS-500
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Re: Monson's Servo Auto Scanner
Thanks, Dan. Looking on Ebay I see what you mean about skate bearings. Are they all about the same or is there a brand I should look for?daniel_reetz wrote:This is incredible work. I am overjoyed... very impressive engineering!
Also, I can highly recommend cheap skateboard bearings for linear motion. They are incredibly smooth and precise and cost very little.
Re: Monson's Servo Auto Scanner
This is amazing, amazing work! It is a pleasure to just watch the video and see page after page turned. I saw your PM just now but you clearly have arduino working great already. Very smart solution with different timings for the upper/lower pageholders. There's also only 4 servos in total (from what I see).
- daniel_reetz
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- Joined: 03 Jun 2009, 13:56
- E-book readers owned: Used to have a PRS-500
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Re: Monson's Servo Auto Scanner
Definitely all about the same. I have some $35 ones from a local skate shop, and they might even be sloppier than the bulk pack I bought from eBay, which was 100 for $40.
I used VXB.com for another order of 100, their stuff is great. Just get the cheapest ones you can get. The ABEC rating basically only specifies runout. I ahve a mix of 7s and 5s and can't tell the difference at all.
I used VXB.com for another order of 100, their stuff is great. Just get the cheapest ones you can get. The ABEC rating basically only specifies runout. I ahve a mix of 7s and 5s and can't tell the difference at all.