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181  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Good LED Matrix Supplies on: April 13, 2009, 11:07:16 am
I've checked these sites out. LEDsee has it for 9 euros, Seeedstudio for $23.50 and the Sparkfun version is different and £20+

Looks like I'm going to go for LEDsee.com

/me
182  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Good LED Matrix Supplies on: April 03, 2009, 06:04:32 pm
Express PCB at the moment. I just haven't got the time to fiddle with the seemingly over-complicated user interface of Eagle. But I'm sure it's just right and the best tool available! (Darn A-Level Work)

/me

183  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Good LED Matrix Supplies on: April 03, 2009, 05:32:51 pm
This is a very good idea. Thanks for doing this; but I can't check it as I don't use Eagle! (too complicated)
184  Forum 2005-2010 (read only) / Frequently-Asked Questions / Good LED Matrix Supplies on: April 03, 2009, 09:57:50 am
Here in England, there don't seem to be very many good suppliers of good LED Matrix displays.

Rapid Electronics, RS Electronics and Maplin seem to just do the boring old Kingbright (small) modules.

Does anyone know any good British (or any US or European shops with good shipping) that sell good RGB or single colour displays?
185  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Seeeduino and 4 motors? on: April 14, 2009, 10:07:40 am
Yes. The Arduino Duemilanove (which I guess you're using) has 6 PWM outputs (3, 5, 6, 9, 10, 11)
186  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Seeeduino and 4 motors? on: April 13, 2009, 11:35:01 am
Yes. Elaborate?

/me
187  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Digital 0 pin (RX) limited to serial? on: April 12, 2009, 08:51:29 am
What is the result? What is the hardware?

/me
188  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Digital 0 pin (RX) limited to serial? on: April 12, 2009, 08:27:36 am
Yes it can function as a normal digital pin, but if you have the USB cable attached and communicate via serial you cannot use it as an additional I/O.

/me
189  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 08:02:48 pm
OK then. With that you also get: more PWM outputs, more UARTS, more Analogue In, more Interrupts and more memory.

Woot!

/me
190  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 07:52:31 pm
Depending on the setup, you could drive this with as little as lines:

RS, EN, D4, D5, D6, D7

That's obviously 4-bit mode.

/me
191  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 07:14:30 pm
It's a similarly shaped board that has all the necessary pins broken out. This allows you to work with expansion ICs or prototyping boards on a similar platform.

Basically, it saves space and time. Also because the Arduino isn't particularly breadboard friendly!

Ben aka /me
192  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 07:01:47 pm
A matrix of switches would look like this formation: http://pinball.flippers.info/lampmatrixdiagram.jpg

So you basically scan across the columns of the matrix and test each switch on the row. It's for keypads and the such.

For A LOT of switches, you can also interface a PS/2 keyboard.

http://www.google.com/search?q=ps/2+keyboard&domains=www.arduino.cc&sitesearch=www.arduino.cc

Ben aka /me

193  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 06:56:03 pm
Thanks for the clarification.

PS. One could say that my new screen name is - loosely- based around the idea of yours, AlphaBeta.

Hope you don't mind; it's just more mature  smiley

Ben aka /me
194  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: noobie question on: April 12, 2009, 06:40:03 pm
If you want the motors to move in both directions, that's two I/O pins. [10]

Stepper motor, 4 to 6 [16]

10 - 15 switches, if formed as a 3 x 5 matrix: that 8 [24]

So, the Arduino has 19 I/Os...

But you can use a Stepper Motor driver IC, and some other I/O expanding ICs.

Ben aka /me
195  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Seeeduino & Scematic or Board diagram. on: April 12, 2009, 04:38:02 am
Why sorta' working? Good to hear you are progressing though.

/me
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