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106  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: ATmega644(Sanguino) compatibility on Arduino 0012 on: October 06, 2008, 11:55:30 am
Hey Guys,

I'm the creator of the Sanguino, and I'd like to clarify a few things:

by 'compatible with arduino', we mean that the Sanguino is:

* programmable with the Arduino software
* implements all of the core arduino functionality (ie: everything on http://arduino.cc/en/Reference/HomePage)

it's my goal to keep the Sanguino as compatible as possible with non-official Arduino libraries, but as you may imagine it is quite a bit of work to ensure that they all stay synchronized.  i'll try to make a note of this on the sanguino website to avoid confusion.

the reason for creating the sanguino, as well as my day to day work is hacking on RepRap, which keeps me really busy.  i'll try and dig into the library code that is having a problem here and try to figure stuff out, but it may take me a little bit to get up to speed with the library and figure out whats wrong.

in the meantime, i'm sending mem a Sanguino kit in hopes that the creator of the library will be able to easily spot and fix the problem.

unfortunately, with low level hardware access happening, you tend to lose compatibility between different microcontrollers. all of the pin to port mappings are published:  you can either check out the schematic or look at the code in the sanguino 'core' folder.  Both are freely available.

good luck with the LCD, and I hope we get this fixed asap.
107  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: New to Arduino - Is a computer required ?? on: November 09, 2007, 02:46:01 pm
Hey rknaik,

just to clarify:  the computer is only needed to load your code on the arduino.  once you load it, you can use the Arduino without a computer.  so if you make a program for your Arduino that does the GPS + SMS stuff and then put it into a car alone, it should work just fine.  you'll need to supply it with power, but that is pretty easy.
108  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Generic Eagle Question on: September 23, 2007, 08:56:28 pm
It was definitely me being a n00b.  If anyone else has the same problem when working on a board, just remember to use the 'Board -> Layout' button in the top.  Otherwise it gets mad if you alt+tab, or whatnot.  luckily Eagle makes 400 backups, so it was pretty easy to recover from. smiley-wink
109  Forum 2005-2010 (read only) / Frequently-Asked Questions / Generic Eagle Question on: September 23, 2007, 06:18:55 pm
Hey All,

I'm designing a board in Eagle.  As I'm laying out the PCB, I realized I needed to make a couple small changes.  I made the changes in the schematic, but now the layout software says that the boards are different, and no 'back annotation' is possible.  I've used Kicad before, and it has this feature where you can re-read the netlist, and it will add any modules that are missing... then all you have to do is delete the old ones.

Is there a way to do something similar?  I really dont want to have to re-lay out the entire pcb every time i just want to make a change to the schematic.  For a 'professional grade' piece of software like Eagle, you'd think it would be smarter than this.  Even Kicad, which isn't exactly the best can handle this.

~Zach
110  Forum 2005-2010 (read only) / Bar Sport / Re: To any bored Developer: Smart Fan Controller on: November 06, 2007, 06:47:51 pm
i agree.  the board i suggested is pretty standard:  pwm connected to a TIP120.  its based on the circuit on tom igoes site.  of course you could probably use it as a digital on/off switch for dc current too.
111  Forum 2005-2010 (read only) / Bar Sport / Re: To any bored Developer: Smart Fan Controller on: November 05, 2007, 04:18:59 pm
this would be a perfect application for one of the boards we developed for the RepRap project: http://www.reprap.org/bin/view/Main/PWM_Driver_1_0

its a board that takes a PWM input, and powers an output.  to test it, i actually hooked it up to some little case fans (watch the video at the bottom of the page) as an added bonus, it gets its power from a hard drive power connector... quite simple if you already have a computer right there.  this board has separate channels on it... so you could control 3 different fans.

i'm also about ready to order a bunch of simple temp sensor boards, but they're not quite ready. temp sensing is pretty easy with a thermistor + a few components.

plus, the whole deal is cheap and open source.  yay!
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