Search found 4449 matches

by uze6666
Tue Aug 26, 2008 3:50 am
Forum: Hardware
Topic: External Memory
Replies: 7
Views: 2252

Re: External Memory

I thinkered with the idea of SD memory for game content, but there's not enough RAM to buffer blocks, so it sounded pretty useless. But to use it to make some sort of 200-in-1 game cartidge, that's genius! Good one Compman. I guess we just need to code some sort of custom boot loader. And the SPI po...
by uze6666
Tue Aug 26, 2008 3:01 am
Forum: Hardware
Topic: capacitors
Replies: 3
Views: 1388

Re: capacitors

Pick values rated for voltage above your own circuit! Since we are talking 5V here, anything between 10V-50V should be fine. But keep in mind the bigger the rating, usually the bigger it is too.
by uze6666
Tue Aug 26, 2008 2:11 am
Forum: Hardware
Topic: Resistors
Replies: 6
Views: 1899

Re: Resistors

All resistors can be found at Digikey. Sometime your need to search in metal-film type. All of them are 1/4W. Here's a dump of most parts used. The part number are DigiKey's. I looked for the 768ohm and they have plenty (768XBK-ND). I will try to update the BOM with this stuff when I have time. Hey ...
by uze6666
Tue Aug 26, 2008 1:47 am
Forum: Programming & Software
Topic: Theory of sound generation
Replies: 13
Views: 4720

Re: Theory of sound generation

Woa. That's quite complex stuff to explain in a forum thread. Even simplified! I'm currently writing some more advanced documentation, with pictures and everything to make sound and video principles easier to digest. It won't be ready until a couple of days but, in the meantime, I can give you some ...
by uze6666
Tue Aug 26, 2008 12:45 am
Forum: Hardware
Topic: ATmega644
Replies: 11
Views: 3488

Re: ATmega644

I highly recommend Digi-Key, I buy all my stuff from there. All duty and brokerage fees are included in the catalog prices, so thats a blessing if you are living outside the US. To program AVRs, the cheapest way I know of is the Atmel ATAVRISP2 (as CompMan mentionned). You can get it at Digikey for ...
by uze6666
Tue Aug 26, 2008 12:36 am
Forum: Hardware
Topic: UZEBOX Live!??
Replies: 8
Views: 3233

Re: UZEBOX Live!??

You are right, the XPort is a bit expensive at around US 55$ plus shipping. But you know, I probably burnt around 500$ experimenting and buying wrong parts...so 50$ seemed small in comparision. :D On one hand, there's simplicity and the other the challenge and fun of learning how networking works. T...
by uze6666
Tue Aug 26, 2008 12:25 am
Forum: Hardware
Topic: NES Controller replacement
Replies: 7
Views: 3083

Re: NES Controller replacement

Well, I considered a few options for the inputs but, quite frankly, Nintendo sold literally hundreds of millions of NES/Famicom. They are immediately recognizable and gives, IMHO, a nice retro look to the console. Also, the prime design goal was to keep the parts count as low as possible. Neverthele...
by uze6666
Tue Aug 26, 2008 12:00 am
Forum: Hardware
Topic: UZEBOX Live!??
Replies: 8
Views: 3233

Re: UZEBOX Live!??

Hi to all, These days, I'm hacking something along these lines (not the Live! service, the Ethernet part ;) ). As CompMan mentioned, an IP stack is possible, but not with a game engine eating up all RAM. Instead, I used the same philosophy as for the color generation, I went for the easy way, yet a ...
by uze6666
Mon Aug 25, 2008 3:47 am
Forum: General Discussions
Topic: First post: Welcome to the Uzebox forums!
Replies: 24
Views: 15023

First post: Welcome to the Uzebox forums!

Welcome to the Uzebox project forums. This place is dedicated to all you electronics freaks and hackers outhere. The Uzebox is the result of more than 3 years of hacking on my spare time, so I hope its useful to you! The uttermost goal of the project was to design some reusable kernel of common vide...