Ok, sorry.
I've extracted the archive and I've runned the application.
I can write the code and I can see the tty periferics but when I upload code on my Arduino I see the error message.
Some time ago I've tried to install older versions but they cannot make conflicts because the Arduino Enviorment uses it's own libraries, isin't it?
It's important to know that ArchLinux isn't a multilib system.

Your link talks about how to install the arduino enviorment version 10. Version 10 don't supports amd64. I've downloaded version 12 that officially supports amd64 machines but it doesn't works!
I've an AMD64 ArchLinux machine.

Hello, I've just tested the new 64bit app but it tells me:

Code:

hardware/tools/avrdude: error while loading shared libraries: libusb-0.1.so.4: wrong ELF class: ELFCLASS64

avrdude is in the arduino dyrectory, so i think it's a bug.

Ciao!
Ho una segnalazione da fare, ieri è nato l'Arduino User Group Bologna!!
Per adesso siamo giusto un gruppo di amici che ha fatto insieme un ordine di schede (e solo un paio di noi hanno già dimestichezza con arduino) ma ci si augura di conoscere altra gente nel territorio interessata al physical computing e all'hardware open source.
Lo scopo del gruppo è comunicare, conoscersi, creare.
Per chiunque sia interessato riporto lindirizzo della neonata mailing list:
aug_bo chiocciola inventati punto org
Saluti!

Ragazzi ma voi dove li comprate i componenti?
Io non riesco a trovare un fornitore online in europa fornito e che non richiede la partita iva.
Potete darmi qualche dritta?

switch: you can use transistors, i've used 2n2222 to drive a toy drum machine without problems. but remember, if you don't insert a 2k2 resistor between the transistor and the pin you can burn the transistor. this tutorial was usefull for me: http://techhouse.brown.edu/~dmorris/projects/tutorials/transistor.switches.pdf

variable resistors: i prefer to use LRD and leds because it's cheap. i think that digital potentiometers can be more accurate but if you want to circuit-bend you shouldn't care to accuracy.

ciao

Thanks for the replies!
Now I can buy components!

Grumpy_Myke, I can't find the voltage pins in eagle's drawings but I will add the capacitors and change resistors. Thank you!

Someone can suggest me an alternative fast transitor for this application?

Here you will find the schematic:
http://agga-mini-show.noblogs.org/gallery/149/knoe.png

Hello!
It's time to make a good diy interface for me and it's the first time I write a schematic. So i want to post it here hoping that someone will see it and write me if there's some horrible mistake.

Basically I want to:

1. Connect 16 pots to my arduino board through CD4067BE (by texas instruments).

2. Drive a 4x4 bicolor (red/green) ledmatrix through 74HC595N and 4 transistors 2N3904 (the transistors connect the columns to ground).

3. Use the same 4 transistor to drive the rows of a 4x4 switch matrix.

I've never build a led or switch matrix and I've never multiplexed before so I'm not sure that my schematic will work.

I have some questions:

a. It's the CD4067BE arduino compatible?
b. It's the 74HC595N wiring right?
c. It's the 2N3904 fast enough?
d. It's a good idea use the transistor for both matrixs?
e. Will it work?

You'll find the schematc's link in the next post because I can't post links in my first post.