![You suck at protoshop. No, you [i]really[/i] oo.](http://blog.gg8.se/images/you-suck-at-photoshop-you-really-do-your-awful.png)
LittleFM beta testers needed
August 11th, 2009LittleFM is an alternative file manager for LSDj, with its main feature being the ability to back up song data to the flash memory of Bleepblop cartridges for bigger and more solid storage. (It currently isn’t confirmed to work on any other cartridge.)
Info and first public version here.
What is LittleFM?
August 5th, 2009I’m right now working on a project called LittleFM. It’s a software project for Gameboy, written completely in assembly language. But can you figure out what it is? Post your thoughts and guesses. (Don’t reveal the secret if I already told you…)
Fixing Gameboy-powered Arduinoboy MIDI glitches
July 26th, 2009I recently had a little problem when building my Arduinoboy. The Arduinoboy did appear to work, but it was glitchy. Some MIDI notes were ignored or gave strange results, and sync didn’t appear to work at all. I sat down and compared trash80’s schematic to other MIDI 6n138 schematics and I noticed something: There was not resistor between pin 7 and ground in trash80’s schematic, which is is otherwise common in MIDI optocoupler circuits.
Left: Before, Right: After. Upper waveform: Test signal source, Lower waveform: Opto-coupler output. Both powered by the Gameboy.
So I set up a prototype circuit with a test signal of 32 kHz to see if I could trace the problem. It turned out that the problem only happens when you power the Arduinoboy from the Gameboy. When powering it with +5V it worked alright and the oscilloscope output looked ok. However when powering it from the Gameboy, the combined losses from the lower output voltage from the Gameboy (The DC/DC only outputs 4.8 V as shown in the previous post) the protection diode at the Gameboy’s link port and trash80’s way of driving the 6n138 resulted in a source voltage of 4V for the 6n138 which made the rise time way to high, as you can see in the left picture.
Adding a 4.7k resistor between pin 7 of the 6n138 and ground decreased the rise time enough to make the circuit work flawlessly. So if you’re having problems with a Gameboy-powered Arduinoboy, try this. Fixed version of trash80’s schematic provided below.
And finally a word of caution. Don’t confuse the 4.7k resistor with the 270 Ohm resistor. A 270 Ohm resistor with a 5% mark (gold strip) can look confusingly similar to a 4.7k resistor. Can you tell the difference below?
Soup is better than twitter
July 18th, 2009Or at least I think so. Or maybe I just have something against Twitter. Anyway, check my soup, and maybe subscribe to my RSS feed there too. I’ll be posting little links and stuff there, probably more often than I post stuff here.
Michael Jackson + Sonic 3
June 27th, 2009So, MJ died last night, which you should know by now. If I broke the news to you, you must be living under a rock. 
Anyway, my tribute to the man is a video I mentioned about a year ago that discusses the similarities between the Sonic 3 soundtrack and some of Jackson’s tunes. They’ve disabled embedding, so you’ll have to click this link to watch the video.
If dinosaurs could speak with George Michael Brower
June 17th, 2009If dinosaurs could speak with George Michael Brower, would they say hey?
Rösta pirat 7/6! (Idag!)
June 7th, 20091) Plocka en röstsedel, t ex för Piratpartiet.
Notera för övrigt flumpartiet “666 för en EU:s Super-state med frihet jämlikhet, rättvisa, fred, kärlek och lyckan”. Om du inte är rädd att din webbläsare ska krascha av alla gif’ar och annat så kan du besöka “the must sophisticated, advanced and well designed website in the World !” http://www.the666.com/. Antingen är det ett skämt eller så drivs den rörelsen av någon som har rökt lite för mycket tjack.
2) Kryssa för din kandidat, t ex en påläst tjej som brinner för sin sak.
3) Identifiera dig och lämna över kuvertet till valförrättaren.
Gå hem, följ vallvakan och känn vind i seglen.
New Tetris Google logo
June 6th, 2009
Must be a new record set in bad readability for those logos. I wonder if they actually played (super wide) Tetris to achieve that logo. If so, they deserve some creds for ending p with something that at least looks a bit like a Google logo. But if it was designed this way… Someone needs to be dropped down a well.
Ayanami Rei’s field trip
April 18th, 2009During my random net excursions I’ve found two people who came up with the same brilliant idea, to let their Ayanami Rei action figures take walk in the “forest”. I think Rei’s blue hair goes well with green leaves/grass. And of course, Rei is one my favourite characters with her introvert behaviour and contemplating look.
The pictures are taken from Moé Rabu (Moé Love) and Polyvinyl Crush. (There’s also a bunch more pictures from the same sets there, so do check it out if this suits your fancy)
Me
April 18th, 2009
Here’s my tired and ugly face.
