How to disable barcodes
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What's a fast and subtle way to disable barcodes? Say I have multiple barcodes close together [pic related] and i only want one of them to be read be the laser scanner, how to you block the others?
Stores usually block a few lines with a black marker but that wouldn't be very subtle.
Will putting a clear sticky tape over it work, just like when you put a tape in an optical mouse?
I have to ask since I can't experiment myself: no barcode scanner. And yes, I've Googled several methods: black marker, white correction ink, reprogramming the database, printing barcode stickers. All of which are not very subtle and/or practical.
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I harvested three of these projection lenses from a rear projection tv my neighbor was throwing away, and I want to make an RGB lamp out of this one.
My basic idea is to get a pvc floor flange of matching size and mount it to the bottom of the lens tube, to serve as the electronics housing. The lens will face straight up at the ceiling. On the side of the housing will be a power switch and three knobs for red, green, and blue intensity levels.
I've built a few led flashlights before, and this shouldn't be too complex, but it's still a little over my head, and I want your advice on the best way to go about it. Should I use multicolor leds, or individual red, green and blue leds? Power supply concerns? Can I do this easily enough with basic components or should I just say fuck it and go arduino?
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I want to replace my interrogation room style bulbs with something that sends the light up to the white ceiling so it can reflect down, and add a dimmer switch.
I have two bulbs in the same room, and want to control the light given by each independently.
Can someone please tell me if these ikea lights will work with a dimmer, and if so, what type I need?
They are G4 12V 10W halogen bulbs, 7 to a chandelier. I'm in Britain so have a 240v power supply.
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So today at work, we had a big client coming in and my dad wanted to have the office cleaned. There was this black, chest-high bookshelf that was apparently handmade by my great grandfather on my mother's side that was in there, and he said he wanted it out because it's gotten pretty beat up and ugly. It's pretty heavy, so I'm assuming it's made of oak. Pretty sturdy. It's not quite level either. But, seeing as I'm getting my first apartment soon, free furniture is free furniture, so I brought it home and I want to refinish it.
How exactly do I do this? I'm thinking sand off the paint so I can see the wood grain, then decide whether to stain it or paint it. Maybe a boiled linseed treatment. The thing that has me stuck is the leveling part. I've got a good carpenter's square and some decent handsaws and chisels, but no power tools that I'm comfortable using (they scare the bejeesus out of me). I have access to most basic carpentry tools, but my skills aren't great. Though I'm very good with my hands after working on guns for several years.
So, how to level out a small bookshelf? I'm going to attempt to take a picture but it's dark. I am by no means a photographer.
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DIY Extra Sensory Perception!
How would you go about, say, making a glove which produces pressure at the fingertips?
Or creating your own Feelspace belt?
Any cheap & usable methods to produce sensory input.
To clarify, by ESP I mean, getting data from a computer, GPS, Internet, etc. and transform it to a form the brain can comprehend... Read the article. This is a really cool thing!
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I already posted this to /k/ but then I remembered that 4chan has this nifty new DIY board. This is kind of an advanced project, but still might pique your interest:
First part of the video is a overview & demo, the second part is a "making of" & partial how to.
"Fully "open source" & public domain design for a universal Glock autopistol rail attachment that you can theoretically 3D print and DIY for around $30. This "Beta" version includes three actuator slots (currently using 1 generic laser diode and two white LEDs), 3-cell battery pack and a 3 position switch that lets the operator choose between: OFF / Laser Sight / Tactical Light.
This is effectively an open platform designed from the ground up to be as versatile as possible, it only utilizes components that are universal, cheap and easy to procure. The maker has total freedom and flexibility to modify the design in any way they see fit. Add your own specific type of LED or laser depending on your needs. Modify the source file to add additional actuator slots, switches, etc. The basic design has already been completed, now you can customize with confidence!"