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lainchan archive - /diy/ - 726



File: 1433877274384.png (409.69 KB, 300x213, cyb.jpg)

No.726

Lains.

Over the last few years I've saved a number of interesting projects from across the web. Some I've found interesting, some I plan on eventually doing.

I'll try to share about one a day or so. Contribute if you want or don't.

  No.727

>>726
First is from when Hackaday was still alright, they published a video of a guy who sent a video camera through the postal system.

http://hackaday.com/2013/04/10/hacker-sends-this-through-the-mail-to-record-a-video-of-the-process/#more-97462

  No.769

>>726
This is cute and likely easy to hook up to run.

https://vimeo.com/74826937

  No.776

>>769
this looks pretty neat

  No.781


  No.782

File: 1434851950554.png (16.48 KB, 200x200, 1300044776986.jpg)

>>769
>arduino mega to read 4 piezos
>using a servo to flip an RFID card over the reader

I seriously hope you guys don't do this.

  No.783

>>782
What would you do SHIGGYDIGGY-chan?

  No.784

>>783
I would program a modest uC with an ISP programmer, add a sleep mode and change the RFID reader and servo by a simple relay or transistor to open the lock. This would use an insignificant fraction of the power their system is using.
I would say they've also used an expensive audio amplifier to amplify the signals from the piezos into something the Arduino can read, I would have designed a simple circuit with 4 OP amps or just 1 op amp that could send an specific signal for each piezo for the uC to interpret.
Only the arduino mega costs around $40, with all what they've used I would say it would cost quite a lot more.
With discrete components and a uC chip it would've been less than $10, assuming the electric lock was already installed.
I guess that program has been used to show the system in operation, otherwise it is redundant.

They're not making anything, they're putting things together.

  No.785

>>784
Isn't making something just putting things together?

On a related note, here is a guide to making your own piezo crystals.

http://makezine.com/2008/07/31/how-to-make-piezo-crystal/

Sorry for only posting links. If anyone has any relevant infographs or .pdf's , please add to the mix!

  No.786

File: 1434922165975.png (20.27 KB, 200x93, Lightening detector.gif)

>>785
I meant there's no electronic design in there, they've just assembled things together and made a small program, at the end it is like using an excavator to dig a small hole instead of using a shovel, it all ends being highly inefficient in many aspects: power, space, cost...
What many people don't seem to understand is Arduinos and similar boards are mostly meant for prototyping, but if they want to spend >$30 to make a clap controlled lamp I'm won't stop them.

I'll contribute with some projects instead of just complaining about them.

http://www.rmcybernetics.com/projects/DIY_Devices/diy-induction-heater.htm
http://hackaday.com/2015/03/23/3d-spectrum-analyzer-uses-1280-leds/#comments
http://www.megavolts.nl/en/projects/tesla-coils/175-audio-modulated-solid-state-teslacoil-v2-0
uzzors2k.4hv.org/index.php?page=drsstc1
http://www.easytreasure.co.uk/bfo.htm
http://www.instructables.com/id/How-to-X-Ray/
https://www.youtube.com/watch?v=HWNhVWEF0Ho

Pic related is a lightening detector, might be useful for photography and other interesting things like a lightening counter. I can confirm it works.

  No.816


  No.817

File: 1436048448582.png (524.92 KB, 200x150, DSC_0288.jpg)

>>816
http://www.instructables.com/id/DIY-TV-B-Gone-SHP-And-Save-45/
http://www.instructables.com/id/350-DIY-TV-B-Gone-Mico/

If you have an spare Attiny85 and anything to program it you can make your own TV-B gone.
I did one a long time ago.
>no resistor for each LED
I know.

  No.1030

Build a Wartime Kitteh and DDOS Dog; Defcon 22

https://www.youtube.com/watch?v=DMNSvHswljM

  No.1260

>>726
heres a collection of projects; some interesting, some terrible, some cringy. A few good ones. Old site.

http://www.rtmark.com/featured.html


  No.1932

>>1909
nice shares, thx m8

  No.1973


  No.1981


  No.1982

>>1981
I have 7 more pages, 3 pages posted so far. It stays pretty eclectic.


  No.1991

>>1983
How many of these have you made? Any favorites?

Should we pick one that everyone makes a version of, then posts a pic?

  No.2005

>>1991
I have made or attempted a number of them including: Pan pipes, Small knives, Throwing stars, a Basic synthesizer with 555 timer chip, Flash cotton, Wooden and metal rings, Tomahawk/throwing knife target, Circuit bent children's piano, can forge, thermite, and an otg cable. There's probably some other stuff that I don't remember. I'll continue dumping from my collection.







  No.2021



  No.2229

>>2224
thank you kind anon. i wish lainchan had a grab function which would save everything in a thread into a nice lil text file or something

  No.2233

>>2013
>http://makezine.com/projects/pirate-radio-throwies/
>The Raspberry Pi’s broadcast frequency can range between 1Mhz and 250Mhz
Look at this. https://github.com/F5OEO/rpitx https://github.com/ha7ilm/qtcsdr
>130 kHz to 750 MHz
And little bit digital tv.
https://github.com/F5OEO/rpidatv

  No.2258

>>2233

Thanks for these. These are rad af. I know what I'm going to be playing with this winter.

  No.2259

File: 1470379240483.png (59.49 KB, 192x200, kyma.png)

https://folding.stanford.edu/ - Really neat and /cyb/ if it's actually transparent and not abused

http://www.labnol.org/software/tutorials/carry-computer-programs-data-usb-portable-drive/1613/ - How to make a thumb drive of Windows XP OS to use for privacy on computers that aren't yours

http://www.labnol.org/software/download-wikipedia-offline/20012/ - How to download Wikipedia.

  No.3450

>>1909
>>1973
>>1981
>>1983
>>1991
>>2006
>>2008
>>2009
>>2011
>>2012
>>2013
>>2224
So many cool things, I don't know what to start with first...

  No.3467

>>2259
Install Tails or gentooliveusb for that stuff.
normal person