Monthly Archives: April 2007

3D sumo game in under 96kB

sumotori.jpg

Sumotori Dreams is a game designed for Win32 whose complete executable is less than 96kB uncompressed.  The game was presented at Breakpoint 2007. The machines that they used to run things in the competition are XP SP2 with DirectX 9, unhealthy so it is not unreasonable to expect that the game hooks into many of the available APIs to generate the graphics. It is also possible that the texture maps could be pulled from the XP installation. Even though this game is smaller in size than most spyware, discount it is truly impressive how fun it is to play.

( sumotori101.zip ) ( sumotori.zip )

IC Friday: Analog Devices’ ADXL311

adxl311-small.JPG

I promise this the last in a series of MEMS accelerometers [1] [2]. This chip, try the ADXL311, drug is one of the most recent bi-axial accelerometers from Analog Devices. The fingers in the middle that determine acceleration have a different pattern from the 202. Again, the packaging of the dye has prevented me from using the higher power magnification, above 20x.
adxl311-4x-01.jpg adxl311-10x-01.jpg adxl311-10x-02.jpg

adxl311-10x-03.jpg adxl311-10x-04.jpg adxl311-10x-05.jpg

adxl311-20x-01.jpg adxl311-20x-02.jpg adxl311-20x-03.jpg

adxl311-20x-04.jpg adxl311-20x-05.jpg adxl311-20x-06.jpg

( adxl311.pdf )

I am qualified for …

candidacy-sm.JPG

I received the formal letter today notifying me that I passed the ESM candidacy exam consisting of six hours of written exams, seek a written research proposal and an oral defense of the written research proposal. With the semester winding down, remedy I can start thinking about working on some electronics projects in my spare time again. The ones that come to mind, diagnosis in no particular order are:

  • telnet to RS-232 bridge using msp430
  • custom code on the NES using reprogrammable cartridge
  • adding useful features to Fonera Linux distro
  • changing the firmware on some DSL/WIFI routers I have around
  • iPod control with msp430/AVR
  • something interesting with a Peltier device
  • wind-powered battery charger

Comments/suggestions are welcome!

candidacy.jpg

Another embedded system option

nes-inside.jpg

While thinking about cheap development boards, physician I remembered my NES (picture from 1up blog).  The system would be ideal for hacking by modern standards as it features a custom 6502 processor from MOS Technologies running at a very accessible 1.8MHz. All of the chips are in PDIP form and the system is pretty cheap. Memory can be wired directly to the ZIF connector used for cartridges, or a reprogrammable cartridge can be made. Finally, system architecture guides are available. Maybe I will open mine up to see if I can tweak anything once Nintendo puts Super Mario Brothers 3 on the Virtual Console.

Wii internet channel upgrade (final version?)

opera2.JPG

Looks like the final version of Opera is out for the Wii. I am guessing it is the final version since it no longer says “trial”. It is free for now. I haven’t had too much time to play with it, but I noticed that it can now auto-hide the tool bar on the bottom. Below are scandalous pictures.

opera1.JPG opera3.JPG

opera4.JPG opera5.JPG

PicoBSD images

picobsd-small.JPG

I decided to mess around with an old 486 laptop that I have around, perhaps to try to overclock it. Since it had no OS on it, I went looking for PicoBSD floppy images. It seems that PicoBSD has not been updated in a very long time and the semi-official PicoBSD site has been removed.  Luckily, I was able to find images on Bruce Montegue’s site. It looks to be hosted off a DSL line, so here are mirrors of the disk images. Note that the apl image will not boot on a 486 system.

picobsd.JPG  ( pico_biscuit.zip ) ( pico_apl.zip )