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by panik
Thu Jan 12, 2012 3:55 pm
Forum: General discussion
Topic: Easy GPIO Hardware & Software
Replies: 133
Views: 49740

Re: Easy GPIO Hardware & Software

Weird, clicking on the quoted link gives the full path:

http://www.scriptoriumdesigns....../index.php

Trying to edit my post gives a database connection error.

Sorry for doublepost.
by panik
Thu Jan 12, 2012 3:51 pm
Forum: General discussion
Topic: Easy GPIO Hardware & Software
Replies: 133
Views: 49740

Re: Easy GPIO Hardware & Software

meltwater said:

This is a link I"ve been using, quite good starter info:
http://www.scriptoriumdesigns


There's a contact button and a link to a set of mugs. Am I overlooking something?
by panik
Thu Jan 12, 2012 3:28 pm
Forum: General discussion
Topic: Easy GPIO Hardware & Software
Replies: 133
Views: 49740

Re: Easy GPIO Hardware & Software

<r>Very useful, thanks!<br/> <br/> At the time, the following Arduino article helped me a lot in understanding the use of a pull-up and pull-down resistor.<br/> <br/> It also talks about debouncing a button in software (using a delay), and there's a useful link to an article about debouncing a butto...
by panik
Mon Dec 26, 2011 1:27 am
Forum: General discussion
Topic: FTDI F232R driver support?
Replies: 6
Views: 2607

Re: FTDI F232R driver support?

Things worked out of the box for me in Ångström as well, and I can confirm Debian. I'd be surprised if it wasn't available on Fedora, or whatever distribution is considered "standard" for the raspberry pi (if any).

Also, I'm sure a moderator will read your edit eventually.
by panik
Wed Dec 21, 2011 4:56 pm
Forum: Other projects
Topic: Using a raspberry pi to program AVR chips
Replies: 9
Views: 3834

Re: Using a raspberry pi to program AVR chips

<t>@14113<br/> In my humble, almost negligible experience, these things usually turn out to be simpler than I initially thought them to be.<br/> <br/> Someone knowledgeable should answer this, but now I tend to think the programmer just pulls the reset-pin low, then dumps the hex-file on memory addr...
by panik
Wed Dec 21, 2011 4:27 pm
Forum: Other projects
Topic: Using a raspberry pi to program AVR chips
Replies: 9
Views: 3834

Re: Using a raspberry pi to program AVR chips

<r>I would really be interested in such a solution. It would also solve the catch-22 problem for beginners on a budget. The problem being that you need a programmed microcontroller (as the programmer) to program a new microcontroller. At least it would save us a lot of connecting and disconnecting c...
by panik
Tue Nov 29, 2011 9:31 pm
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<t>SSOP really isn't too hard to solder by hand with a regular soldering iron and "normal" tip. You don't even need an extremely steady hand.<br/> <br/> Just make sure to use flux, and maybe a magnifying glass to check your work. Small bridges can be removed by applying the soldering iron again. Rem...
by panik
Sat Oct 29, 2011 8:55 pm
Forum: Other projects
Topic: Pirate box, anyone?
Replies: 16
Views: 6237

Re: Pirate box, anyone?

This is awesome on many levels.
Thanks for sharing!
by panik
Mon Oct 24, 2011 7:48 pm
Forum: General discussion
Topic: 2006 prototype - anyone building one?
Replies: 11
Views: 1703

Re: 2006 prototype - anyone building one?

<t>I\'m definitely tempted. Really inspiring! I only looked at the PCB with gerbv on linux though (so, third on the schematic in some other format). Still. Neat!<br/> <br/> Is there any chance that we can have a look at some of the sourcecode? Some drawing routines maybe, to get us started? I wouldn...
by panik
Wed Oct 19, 2011 1:46 pm
Forum: General programming discussion
Topic: Lets get a beginner programing thread in here!
Replies: 56
Views: 12454

Re: Lets get a beginner programing thread in here!

<r>Quote from tufty on October 17, 2011, 09:01<br/> As for Processing, I don't know. It would need a JVM (I believe the ARM core is Jazelle-enabled, for what it's worth), but that's certainly a worthwhile thing to have. Processing is pretty nice.<br/> <br/> If (for whatever reason) Java is a problem...
by panik
Sat Oct 08, 2011 3:52 pm
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<r>Without USART on the R-Pi, an option could be to program a USB-capable MCU (using dfu-programmer or anything else) to behave as a Generic HID. To communicate with the MCU at runtime, one would send and receive bytes to and from the device using libusb. I've used the LUFA library (http://www.fourw...
by panik
Sat Oct 08, 2011 2:11 pm
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<r>With my minimal knowledge, I've recompiled the AVR-toolchain (binutils-avr, avr-gcc, avr-libc) to ARM. So I know that will work on our R-Pi's. That was without realizing someone else did a better version. Now I'm using that.<br/> <br/> There are Atmel MCU's that contain a bootloader to program th...
by panik
Sat Oct 08, 2011 12:10 am
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<r>Quote from hippy on October 7, 2011, 21:20<br/> Quote from bradburts on October 7, 2011, 21:09<br/> I want to have lights flashing within moment of receiving my RaspPi!<br/> <br/> Absolutely! Even if it means going old-school; resistor and LED straight to the pin <E>:-)</E><br/> <br/> Blinky ligh...
by panik
Mon Sep 26, 2011 6:43 pm
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<t>Thanks Stefan, that would be a good test. I've used the TXB0106 for UART and bitbanging shift registers. That worked well, since there wasn't a lot that could go wrong.<br/> <br/> However, The TXB-series will not work with I2C and 1-wire. I didn't think about that when I wrote my previous post. S...
by panik
Mon Sep 26, 2011 3:16 pm
Forum: Other projects
Topic: Break out board (GPIO, SPI, I2C, and UART)
Replies: 189
Views: 39901

Re: Break out board (GPIO, SPI, I2C, and UART)

<r>Quote from bill on September 26, 2011, 02:15<br/> Does anybody have any experience with the T.I. TXB0108? At a casual glance it certainly looks like a solution for the buffering problem, if just a bit pricey.<br/> <br/> I did some experiments with the TXB0106. They're easy to work with and they d...
by panik
Sat Sep 24, 2011 8:46 pm
Forum: Gaming
Topic: Self-Contained MAME Machine
Replies: 80
Views: 37997

Re: Self-Contained MAME Machine

Different strokes for different folks.
Every option has pros and cons. By discussing it, everyone can make a better educated decision for themselves. That's a good thing :D
by panik
Fri Sep 23, 2011 10:34 pm
Forum: Gaming
Topic: Self-Contained MAME Machine
Replies: 80
Views: 37997

Re: Self-Contained MAME Machine

<t>Quote from blc on September 23, 2011, 22:44<br/> If interrupts are the best way to go, then the Arduino is out of the window as a permanent solution: both the Duemilanove and the Uno only have two interrupt pins. My arcade control panel is going to have at least 14 pins/connections: 4 for the joy...
by panik
Fri Sep 23, 2011 8:58 pm
Forum: Gaming
Topic: Self-Contained MAME Machine
Replies: 80
Views: 37997

Re: Self-Contained MAME Machine

<r>Thanks blc. I'm definitely not an expert, and you made some good points, but I'm afraid I don't agree with all of them. <E>;)</E><br/> <br/> Quote from blc on September 23, 2011, 16:58<br/> There's a few things that would cause some issues with a microcontroller... First there's the potential del...
by panik
Fri Sep 23, 2011 1:47 pm
Forum: Gaming
Topic: Self-Contained MAME Machine
Replies: 80
Views: 37997

Re: Self-Contained MAME Machine

<r>Wouldn't something like a Teensy (<URL url="http://www.pjrc.com/teensy/">http://www.pjrc.com/teensy/</URL>) also work instead of an I-Pac? They start at $16,- and are very easy to program and use. It's basically a microcontroller that can behave as a USB-HID.<br/> <br/> I have been looking at the...

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