Hackaday Links

Links

hey guys, hope all is well in this wicked heat! eliot did a very nice week in review and it should be checked out. also, thanks for everyone wishing me to get better with my teeth. i got them pulled out yesterday morning and 90% of the pain is gone already and i’m even able to eat french fries and stuff like that. i am still a bit out of it though so i’m giving you guys 5 awesome links that you should enjoy. tomorrow i should be back to normal enough and i’ll be working on the next howto. so thanks again for your concern eliot, jason, and all you readers out there. i really appreciate it.

make yourself a usb cigarette lighter! [joe]

barstool racing. forget boxcars, this is whats up. [prozack]

iChat on your television, if your monitor goes i suppose.

this is awesome! make your own fog machine!

NES controller now on usb! stylin! [brad604]

Thanks for bearing with the short links people, keep reading and next week be on the lookout for the CVS camcorder!

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This Week In Reverse

zayitz wallpaper

[zayitz]

Hey folks this is Eliot. I know when I got my wisdom teeth pulled I didn’t want to do anything; So, I’m hoping Vince is going to take it easy today.

Things have gotten pretty heated in the comments recently and I wanted to address some of the things brought up. Just so you don’t get bored I’ve included all of the wallpapers that have been submitted so far. Click on the images to get the full size versions. The following isn’t going to be all bureaucratic drek.  I’ve included other interesting links that have appeared during the week. Here we go, starting at the end and working back towards the beginning.

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Quadrature Optical Encoder Built From A Mouse

mouse salvage

Everyone has at least one extra mouse laying around; why not get some use out of it? Disassembling the mouse you can get two optical encoders plus four infrared emitter/detector pairs. Then you can reassemble your new sensors into a quadrature incremental optical encoder. You’ll be able to tell how much the sensor has rotated and by comparing the signals from the two IR pairs you can also determine the direction. These cheap devices would be good for keeping track of robot wheel movements or doing absolute positioning telescopes.

[thanks joelanders]

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DIY Recumbent Bicycle

recumbant bicycle

Bill Dudley built this recumbent out of a 20″ bmx bike and a 27″ bike that he found on the side of the road. The only specialized part used was an idler from a commercial recumbent. Bill says the most difficult part was constructing a comfortable seat. It apparently works pretty well; He’s completed several metric centuries (100km/63 miles) on it. I think the first recumbent I ever saw as a child was the BEHEMOTH, which is in class of its own.

[thanks Bill]

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Hackaday Lazy Afternoons

Lazy Afternoons

good afternoon people! its hot, its muggy, and we need to get ourselves a way to chill down. here in pennsylvania, we’re in for heat all week.

after those wicked thunderstorms we had monday, this thing is looking even better. [maverick]
…but oh noes. the world’s “biggest computer hacker” has been arrested in london. Do I smell the next “FREE MCKINNON”?

[Dash] sent this in. The red screen of death? Whatever, Longhorn sucks.
Fat? Enjoy Food? Love Chess? This is for you….lazy bum. (kidding of course)

Cnet also suprisingly alerted me that there is “ a shortage of mainframe hackers“. Gee, god knows every aspiring hacker loves a huge ass IBM mainframe. HP-UX pride baby.

Now, for your little cute lazy afternoon trick/story/hack/freebie, I’m celebrating one of my math tests I took today by giving your some mathemagician skills. Think of it as hacking math and the mind all at once. So here we go, get some friends on the phone and start rocking these:

Trick 1.
Think of any number, preferably divisible by two.
Add 8
Multiply by 2
Divide by 4
Subtract the half of the initial number
Your answer is now 4.
EDIT: Stupid KEYBOARD. I accidently hit 2 before the 4 key, yeah, you’re supposed to end up with 4 everytime..which you’ve figured out by now obviously.

OHHHH. Damn. Let’s have another shall we?

Trick 2.
Roll two dice.
Multiply one of the numbers by 2
Add 5
Multiply by 5
Add the second number
Subtract 25 and you get the dice numbers.

Now go off and enjoy. I’m getting all my wisdom teeth yanked out tomorrow so I’ll post pics.
Yes, pics

Auxiliary Input For A Car Stereo

auxiliary in

Matt Gilbert was tired of using his noisy cassette adapter with his iPod so he added an auxiliary input to his factory radio. Normally this type of thing isn’t possible with factory stereos, but Matt’s 2001 Corolla has the factory CD player as a separate component from the head unit. He starts a CD playing and then uses a toggle switch to swap the sound coming from the iPod with the sound from the CD unit. This would also work with a factory CD changer, but you can’t just plug straight into the head unit because it needs to receive the “everything’s okay” signals from a CD player in order to turn on the input. You might be able to do this with “premium” factory stereos since they usually have a separate amp. All this hack needs now is a clever dock; I bet you won’t even miss that clock.

[thanks Matt]

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