Mechanized Pin Display Pc Peripheral for Blind
This can be a mission that I need to create, and I would like it to be open supply… or a minimum of as open supply as I will be able to make it. Mechanical tasks are exhausting to make open supply, however I am gonna simply publish some stuff and possibly it’s going to lend a hand somebody, and possibly somebody will lend a hand me. I will be able to be updating this publish as time is going directly to fill in additional of my idea and any new ideas.
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Necessarily, a finished model of this mission would permit me to simply perceive the overall structure of my track with out the usage of my eyes.
Options of Mechanized Pin Display:
* Adjustable place of pins on pin display (a pin display is used [here](https://en.wikipedia.org/wiki/Pin_Art) for reference).
* Translation of brightness of pixels to peak of pins.
* Obscure illustration of structure of track (must have the ability to inform the place a searchbar is, however now not the textual content of the searchbar)
* Rapid refresh charge (10 seconds max to refresh)
* Trilateration of a stylus for controlling mouse
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With those options, I believe that I must have the ability to navigate the web extra simply than if I best had a text-to-speech program. I must have the ability to parse code extra simply as a result of I must have the ability to really feel acquainted portions of code after which choose the precise strains to have them be learn out loud. I must have the ability to even design 3-D fashions in systems like Fusion 360, FreeCAD or Blender.
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I intend to run my hand around the pin display to really feel for searchboxes, acquainted strains of code, and acquainted icons so that you could extra simply use my laptop with out the usage of my eyes.
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Main points of Mechanized Pin Display Options:
1. Adjustable place of pins on pin display
1. I believe that there must be a couple of discrete steps. 255 steps is most likely overkill, however 2 steps might not be sufficient. Discovering a gray seek bar on a black background is also tough on a pin display. Experimentation wanted
2. Extra data quickly.
2. Translation of brightness of pixels to peak of pins
1. I believe that brighter pixel teams must result in upper bodily positions of pins.
2. I believe that there must be a bodily slider enter to switch the higher and decrease thresholds and the gradient form of the interpretation mapping. Colours will also be modified.
3. Obscure illustration of structure of track
1. I must have the ability to establish a searchbar, presence of a picture or textual content, and distinguish between acquainted strains of code and acquainted button icons all with my hand.
2. Some checking out has proven {that a} 100×50 pixel snapshot of the track is enough to resolve searchbars, and so on. In all probability this will probably be enough for a pin display.
1. 100×50 is 5000 pins. That is a large number of pins!
2. Pin spacing could be 1cm^(2)
3. The potential to zoom in on particular spaces would most likely be helpful
4. Rapid refresh charge
1. I believe that 10 seconds must be the utmost period of time that I must wait to get a completed pin symbol. Any further and I doubt the longevity of the usage of this mission. (which means that even supposing it *works*, I wouldnt use it as a result of how tedious it’s)
2. Extra data quickly
5. Trilateration
1. I must have the ability to use a stylus to transport a mouse to click on hyperlinks, choose textual content to be learn aloud. and so on.
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Mechanics of Mechanized Pin Display Options:
1. Adjustable place of pins on pin display
1. Unmarried devoted motor for each pin.
1. Execs: More than likely the quickest possibility. Most straightforward to take into accounts. Refresh charge does now not alternate with dimension.
2. Cons: Wasteful and dear. For 100×50, 5000 motors can be wanted. Now not simply scalable economically or bodily.
2. Multiplexed motors. The usage of 3 motors, 1 for X, 1 for Y, 1 for Z all pins will also be reached.
1. Execs: Fairly affordable (best 3 motors), simple to scale up economically and bodily
2. Cons: Time will increase quadratically with answer. Sluggish general. With 1 pin according to 2nd, this is able to take over an hour to refresh one pin display.
3. In all probability a little analysis into easy movement very similar to JPEG compression can considerably build up pace via gliding a Ping-Pong ball or one thing underneath the pins
3. Binary slot- A binary slot prevents the pin from shifting up thru holes until electronically actuated. Experiments with NiTiNOL glance promising to make use of as actuation subject material. Extra Data Later.
1. Execs: Reasonably affordable (1cent/pin) for simply the cord. Rapid actuation, actuation does now not alternate with answer. Time to cooldown from activation does now not subject for the reason that person will investigate cross-check the pin display whilst it cools down
2. Cons: Pins would possibly best be utterly up or utterly down. Wishes vital quantities of warmth to turn on (60C) Imaginable fireplace danger. Massive power intake. Shall be an absolute PAIN to build, restore, care for. More than likely factor susceptible (intestine feeling)
4. NKRO sort matrix – Extra data quickly
1. Execs: Great heart flooring for value. Simplest 100+50 = 150 motors as a substitute of 5000 motors. Heart flooring for refresh charge and scales sqrt(answer)
2. Cons: Could also be tough to paintings on. Won’t have the ability to succeed in 10s refresh requirement.
5. extra strategies quickly
2. Adjustable place – fixation
1. Lately, the location of the pins is anticipated to be held in position via being sandwiched between 3 layers of versatile skinny rubber which are in shear relative to one another. – extra clarification quickly.
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extra data quickly.
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View Reddit via Zeno_3NHO – View Supply
