Serial port JTAG programmer

serial-port-jtag-programmer

If you're planning to do some hacking with CPLD or FPGA chips you'll need a way to program them. JTAG is one of the options and here's a cheap method that uses the serial port (translated). This method requires only four signals (TDI, TMS, TCK and TDO) plus ground. But the problem is that an RS232 serial port operates with 12V logic levels and the JTAG side of the programmer needs to operate … [Read more...]

It’s like… I can tell the time just by the color, man

color-changing-clock

[Alex] has reduced the resolution of his timepiece as a trade-off for speedy-readability. At least that's what he claims when describing his color-changing clock. It uses a ShiftBrite to slowly alter the hue of the clock based on the current time. The concept is interesting: 12:00 starts off at white and slowly fades to green at 3:00, blue at 6:00, red at 9:00, and back to white by 12:00 to start … [Read more...]

BAMF2011: Lasersaur is one BIG laser cutter!

lasersaur1

Psst…wanna buy a laser cutter, but not ready to sell your internal organs? Nortd Labs’ Lasersaur project aims to create an open source large-format laser cutter/engraver that undercuts (har har!) the cost of commercial models by an order of magnitude. … [Read more...]

Hacking for feline enjoyment

hacking-a-cat-toy

[Dino] is staying true to his goal of hacking one project every week. This time around, he's working on a toy that will amuse and delight his cats. The project centers around a mouse house that has two holes where mice can stick their heads out. When they do, a little LED lamp illuminates their appearance in hopes to catch the eye of your lazy kitty. The mechanism that automates this device is … [Read more...]

Shoehorning RS-232 into a Minitel terminal

minitel

In the early 80s, millions of terminals were handed out to French telephone subscribers. Nearly 9 million of these Minitel dumb terminals were in use at one time, and with that degree of ubiquity, we're surprised we haven't heard of them before. These boxes were usually connected to the outside world through their internal 1200bps modem, but [O. Blt] came up with this build (Google Translate link) … [Read more...]

We know “Mario’s Early Years” was a let down, but this takes it a bit too far.

oh god

[JJ Hendricks] wrote in to tell us about his SNES cartridge urinal. The fully functional urinal is constructed with 40 SNES cartridges and sealed up with polyurethane. The base of the whole operation is actually not a puddle of festering urine, but instead poured polyurethane that ensures proper flow through the drain. You heard right, this urinal actually flushes! As a bit of consolation … [Read more...]