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Dry erase board lined with IR sensors to record pen strokes [video]

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Re: Dry erase board lined with IR sensors to record pen strokes [video]

#21

Post by raldi »

jwcacces wrote: post #16

My high school had these in 1995. Each marker color had a different reflective pattern on a band around the tip so the scanning laser could read it like a bar code. I remember the eraser having a solid reflective band all the way around. It was pretty cool, as we all got whiteboard "transcripts" emailed to us at the end of the class that you could play back / pause / rewind / etc... whenever you wanted. Also, these b…

And the erasers were circular, so that their rotation wasn't significant and didn't need to be known by the software.

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#22

Post by olympus »

arey_abhishek wrote: post #13

OP here. If you'd like to see a kickstarter project out of this, please upvote this comment!

Not that you asked, but here are some ways I think you could go about releasing this to the public and make some money off of it (only one method uses Kickstarter):

1. You could do a Kickstarter where you sold a kit that you sourced with hardware from Alibaba and code you wrote yourself. This would be a lot of effort, but could be fairly profitable if the KS succeeds.

2. You could release some how to instructions on how people can make their own panel, and charge for software. You don't even need KS for this, just a PayPal (or other money transfer company) account.

3. You could release your code on GitHub for free and let people pay you out of the kindness of their hearts, either through PayPal, Patreon, or Gratipay.

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#23

Post by arey_abhishek »

olympus wrote: post #22
arey_abhishek wrote: post #13

OP here. If you'd like to see a kickstarter project out of this, please upvote this comment!

Not that you asked, but here are some ways I think you could go about releasing this to the public and make some money off of it (only one method uses Kickstarter): 1. You could do a Kickstarter where you sold a kit that you sourced with hardware from Alibaba and code you wrote yourself. This would be a lot of effort, but could be fairly profitable if the KS succeeds. 2. You could release some how to instructions on…

I like #2 & #3 options better than doing a KS. Going to think about this. Thanks, appreciate this.

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#24

Post by jwcacces »

raldi wrote: post #21
jwcacces wrote: post #16

My high school had these in 1995. Each marker color had a different reflective pattern on a band around the tip so the scanning laser could read it like a bar code. I remember the eraser having a solid reflective band all the way around. It was pretty cool, as we all got whiteboard "transcripts" emailed to us at the end of the class that you could play back / pause / rewind / etc... whenever you wanted. Also, these b…

And the erasers were circular, so that their rotation wasn't significant and didn't need to be known by the software.

Yes!

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#27

Post by [deleted] »

jwcacces wrote: post #16

My high school had these in 1995. Each marker color had a different reflective pattern on a band around the tip so the scanning laser could read it like a bar code. I remember the eraser having a solid reflective band all the way around. It was pretty cool, as we all got whiteboard "transcripts" emailed to us at the end of the class that you could play back / pause / rewind / etc... whenever you wanted. Also, these b…

[deleted]

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#28

Post by ubersync »

olympus wrote: post #22
arey_abhishek wrote: post #13

OP here. If you'd like to see a kickstarter project out of this, please upvote this comment!

Not that you asked, but here are some ways I think you could go about releasing this to the public and make some money off of it (only one method uses Kickstarter): 1. You could do a Kickstarter where you sold a kit that you sourced with hardware from Alibaba and code you wrote yourself. This would be a lot of effort, but could be fairly profitable if the KS succeeds. 2. You could release some how to instructions on…

Another payment option for #2 and #3 is Bitcoin.

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#29

Post by DiabloD3 »

It'd be nice to do something similar to this on one of those cheap $200-300 40" TVs that go on sale sometimes (the kind that have very bad visual quality, but could reasonably display large high contrast text, and crude lines), and just record where a stylus is and make an extra cheap and ghetto pen TV out of it.

Re: Dry erase board lined with IR sensors to record pen strokes [video]

#30

Post by zodiac »

bobosha wrote: post #26

couldn't we have a webcam to stream/record the video? or perhaps capture snapshots? If needed we might subtract the human from the video stream using some basic machine vision techniques.

I imagine the human's hand would be obstructing active areas of the board a large percentage of the time
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