__ __         __            ___           
  / // /__ _____/ /__  ___ _  / _ \___ ___ __
 / _  / _ `/ __/  '_/ / _ `/ / // / _ `/ // /
/_//_/\_,_/\__/_/\_\  \_,_/ /____/\_,_/\_, / 
retro edition                         /___/ 
Now optimized for embedded devices!!
About Successes Retrocomputing guide Email Hackaday

Resurrecting a Mac LC for server duties

posted Feb 2nd 2012 7:01am by
filed under: hardware

It might just be a case mod, but we love [Eduard]‘s take on a modern Macintosh LC (translation). The donor motherboard came from a disused home server, and the LC came from [Eduard]‘s childhood memories of playing Glider and The Incredible Machine.

The case was donated from a venerable Macintosh LC, manufactured circa 1990. The original LC had a Motorola 68020 CPU, which [Eduard] upgraded to an Intel Atom board. It was a somewhat tricky build – he adapted a 90 Watt power supply from a piece of old office equipment to power the new Intel board. With a great deal of very careful Dremel work, the old-school Apple logo was modified into a power button for the new computer.

For frequent readers of Hack a Day, it’s no surprise that we’ll grab up any old Apple or Mac build. [Kevin] built a weather station and analog joypad for his Apple IIc, We’ve seen custom Mac ROM SIMMS, and of course [Sprite_tm]‘s amazing SE/30 emulation. If you’ve got something that will send our 68k senses tingling, send it on into the tip line.

Brute forcing VM pin codes

posted Apr 22nd 2007 10:52pm by
filed under: misc hacks


er, [-] sent in this little project. War-dialing is classic. The Scanit is designed for VM wardialing from a cell phone. The interface is a simple sound card to cell phone device made from a cheap car kit.. A laptop does the rest of the work. Apparently the nokia they used responds to sound based send/end commands. (DTMF is easy) I’d like to see a schematic and some source code, but nothing in the project is too terribly difficult.

hackaday links

posted Jun 26th 2005 3:00am by
filed under: Uncategorized

Links

ouch. i burnt myself cooking up all these links. but now that they’re done, I can dish them out to you guys.

if you’ve got some cash and a ton of free time, make your own R2-D2. [xytec]
be a real dork and make an ethernet testing keychain. [2bitwhore]
an interesting method of scanning negatives. [foo]
totally missing my childhood now. this is all about super soakers and water guns. they even have a section on building your own water gun. some of which are pretty insane.
uh, honda apparently is down with letting asimo help kids learn to cross the street. [sarge]
a low cost analog and digital tv modulator. you uhf pirate….arrrrrr. [joe]

whoa! cool stuff! listen to the sound of the data on your harddrive. i never would have thought about doing this. [dryicerx]

LED LCD backlight replacement

posted Jan 9th 2007 4:56am by
filed under: pcs hacks, peripherals hacks


[Keith]‘s cousin gave him a LCD with a noisy backlight. He decided to replace it with a series of high output LEDs. He sourced some locally in the form of cheap LED headlamps from an auto-parts store. The results look pretty good – and the write up contains this gem: “…One [LED] also exploded due to an accidental overvolt. Shot me in the Chest. Panel okay though” Nice work.

Minimalistic 555 Adding Machine

posted May 27th 2011 7:01am by
filed under: classic hacks, hardware

How many 555 timers does it take to add up two 10 digit numbers? [Alan's] 555 Adding Machine does it with 102 of them, he designed the machine as an extreme entry to the 555 contest and the original plan was to make it even more complicated. This machine uses the 555′s to implement a nine decade accumulator and multiplexer, all inputs are managed by an old school dial from a rotary phone which apparently provide nicely timed outputs. Addition and subtraction are achieved using 9s compliment arithmetic which he discusses in the video after the break, for anyone who wants to brush up on 9s compliment or 555 theory.

Alan’s website has some nice pictures (We’re particularly impressed by all that minimalistic soldering) including schematics, and a very nice 33 minute video in which he discusses in detail how the machine works and even offers some history on the Pascaline, which is mechanical calculator that works on similar principles.


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