Search found 376 matches
- 25 Nov 2013, 11:21
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Re: Full Auto Brainstorming
A simpler way to do it: Get rid of everything but one torsion spring and the lifter arm. Use the servo to raise and lower the arm as well as apply variable down force. Sequence of ops: 1. Cameras fire. Lifter servo is up. Slide servo retracted away from page. 2. Slide Servo extends so lifter tip is ...
- 24 Nov 2013, 15:52
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Re: Full Auto Brainstorming
Another page lifter gadget. The new gimmick here is a hobby servo to adjust downforce on the rubber tipped lifter. The goal is to have a microcontroller move the servo in response to inputs from a page checker which senses page thickness or light through the page or something else. If the lifter fai...
- 04 Nov 2013, 16:31
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Re: Full Auto Brainstorming
dpc: In my own experiments even moderate vacuum on a page tended to pull on the page underneath. Interesting. Makes one wonder how that scanner I posted a link to is able to do it so well with vacuum? They claim that they can vary the vacuum based on the page detector sensor though. Maybe that help...
- 31 Oct 2013, 09:43
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Re: Full Auto Brainstorming
Idea for a page lifter with automatically resettable downforce. The P/E transducer is a pneumatic pressure regulator that is controlled electrically so the Arduino can put more or less force on the rubber tipped page lifter. If the page fault detector sees more than one page, pressure is reduced by ...
- 29 Oct 2013, 16:11
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Re: Full Auto Brainstorming
Daniel, if we're talking about going "full auto" then any human intervention is forbidden. It's an all or nothing contract. It's the sort of process that would take place inside a hypothetical "scan-it!" kiosk. A book goes into a slot and out comes a DVD with the scanned images/...
- 27 Oct 2013, 12:12
- Forum: R&D and New Technologies
- Topic: Full Auto Brainstorming
- Replies: 14
- Views: 27055
Full Auto Brainstorming
Join the brainstorm. Comments welcome. The hardest part is to consistently pick a single page. This is because of the great variations in page quality, book size, and bindings. Any dependable machine must be equipped with page fault detectors to reject multiple pages and nil pages. A desirable featu...
- 24 Oct 2013, 12:22
- Forum: Scanners and Build Threads
- Topic: Jck57's Full Auto Scanner Scheme #6
- Replies: 82
- Views: 89778
Re: Jck57's Full Auto Scanner Scheme #6
Good point, Dan. I really want to use the much more powerful gearmotor to raise and lower the wedges. Here's another idea: an electomagnetic clutch disengages the wedge rotation as the axial cam keeps turning to lower and raise the wedge. Ordered this Sharp copier clutch for $15 on ebay. We'll see i...
- 24 Oct 2013, 08:51
- Forum: Scanners and Build Threads
- Topic: A new scanner design using plastic tubing
- Replies: 224
- Views: 268500
Re: A new scanner design using plastic tubing
Nice work, David.
Have you considered extending the horizonal pipes toward the operator and then joining them to a transverse pipe with two elbows to form a handle?
Have you considered extending the horizonal pipes toward the operator and then joining them to a transverse pipe with two elbows to form a handle?
- 23 Oct 2013, 22:12
- Forum: Scanners and Build Threads
- Topic: Master Index of All Scanner Builds.
- Replies: 18
- Views: 123245
Re: Master Index of All Scanner Builds.
Nice work, David. Have you considered extending the horizonal pipes toward the operator and then joining them to a transverse pipe with two elbows to form a handle?
- 23 Oct 2013, 20:59
- Forum: Scanners and Build Threads
- Topic: Self-Adjusting Spine Support
- Replies: 103
- Views: 126921
Re: Self-Adjusting Spine Support
Based on a BGA kit. A single-handed option to adjust two clips for locking and deskewing small book covers. The clips move simultaneously over a threaded rod with one side right hand thread and the other left hand tread. The thread is placed through drilled holes on the sides and a routed slot on t...