Invisible Qr Code Project For Hackaday Competition

jstarne1

USA
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Hello all, while working this project I only updated the competition site but given I am using EZ Robot it’s roots are here in the community.
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Here is the latest update on the custom invisible QR code for discretely marking the inside of your homes furniture, doors, floor, or ceiling with codes that only illuminate when you hit them with the correct nanometer light 405nm or 780nm IR/UV
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https://www.gofundme.com/68cigk8

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#1  
In this community we void warranties! So in true diy robotics fashion I am gutting a 2008 Rovio and putting modern EZ Robot equipment, ultrasonics, the QR code cams and LEDS and more.:)
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6 ply mdf wood glued together and clamped. I used a bandsaw to cut the shape of the body. A quick test fit shows I had to trim out the front so that the top will sit all the way down.
#11  
@Jeremie , Thanks, I really appreciate it! I took a couple days off from this bot, but I will go back at it tommorow on my day off.
#12  
What’s interesting is that this is a normally lit room , the light shows so bright through the camera the auto brightness adjust kicks in and the rest of the room looks dark

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No led on at all , invisible
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#13  
One 3 watt led , I have found I can undervolt it to 1 watt and it is still 80 percent the brightness. The led is a light purple glow to the human eye , but looks like the scorching sun through the cam.
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With no QR code to focus on , the light just looks incredibly bright similar to the same nm laser diode I tested.
#14  
Moment of TRUTH , daytime QR code reading test. It is almost 11 am here and I am in the great room of the house which has 17 windows. The natural light overpowers indoor lights in here and I was able to get good QR code reading even with this level of light interference. Yes yes ! Pics or it didn’t happen!
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#15  
Haven't commented on this post yet but rest assured I've been lurking in the shadows, haha. Very nice job, Josh! This is such a cool and original idea, great to see it working in an environment with lots of light. Great looking robot!
#16  
Thanks man! I appreciate the feedback, it will be fun to continue expanding this concept. I have soldered up several of these LEDS to use on other robots and such. Hopefully the EZ Robot camera will work well with them too.