Domain: techfreakz.org
Stories and comments across the archive that link to techfreakz.org.
Comments · 8
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Re:TP 755CV: A real transparent screenYour instructions are extremely helpful! Thank you very much!
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Re:TP 755CV: A real transparent screen
I built a transparent aquarium screen a few years back.
http://www.techfreakz.org/fishmon/fishmonscreen1.j pg
other misc pics:
http://www.techfreakz.org/fishmon/
The Betta fish kept attacking dark parts of the screen where it saw a reflection.
~kyoorius -
Re:TP 755CV: A real transparent screen
I built a transparent aquarium screen a few years back.
http://www.techfreakz.org/fishmon/fishmonscreen1.j pg
other misc pics:
http://www.techfreakz.org/fishmon/
The Betta fish kept attacking dark parts of the screen where it saw a reflection.
~kyoorius -
Re:So wait, how do i hack my metrocard?
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Re:I have a projector (screen types)
I have read, on avsforum, about people who are using a specific sheet plastic (bathroom shower) material bought from the Home Depot for HT screens. They rave about how much better it is than commercial Draper or Dalite screens.
You might want to try that before dropping some dough on a commercial roll-up screen that is either too reflective/not enough or rolls down unevenly.
I went the homebrew route with my motorized drop-down screen ( http://techfreakz.org/~rolan/ht ) because it had to be wife-friendly.
If I could leave the screen down all the time, or find a way to hide when not in use, I'd probably go with the plastic shower material.
At $20 for a 4x8 sheet, it's worth a try.
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Forget 20 months, check out what 20 days will to.
I left my CDR's out for about 3 weeks and
check out the results:
http://www.techfreakz.org/cdruv/
These are name brand CDR's exposed to the
sun for only an hour or two each day.
(mod this up guys, people need to be warned). -
Aquarium Monitor
I did an aquarium monitor roughly a year ago.
http://www.techfreakz.org/fishmon/
I can't see their website now because it's /.'d but it would probably complement the case.
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Re:Acid etching is nearly extinct
Ferric Chloride is pretty corrosive.
I've started using a Cupric Chloride solution to do etching. The stuff is reusable, and due to the
chemical reaction, the resulting etched copper sludge can combine with the free H+ in the solution to form... more Copper Chloride! It doesn't seem to be as corrosive as FeCl, and because it's reusable, you don't have to pour it down the toilet when you're done.
some pics: http://www.techfreakz.org/cucl2/
The resist on the copper board was printed on regular paper (in reverse), then ironed onto the copper PCB.