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256  Using Arduino / General Electronics / Re: Adding FT232R chip to Arduino Clone on: August 25, 2011, 01:21:52 am
Alright gentlemen thank you for the arsenal of info those schematics help A LOT, i dont know why i forget  something as simple as looking at a schematic before asking questions. Thanks anyways.
257  Using Arduino / General Electronics / Re: Adding FT232R chip to Arduino Clone on: August 25, 2011, 12:55:56 am
I have tons of questions but i do not want to blow up the boards , but i have really been wondering this , I went by the Tutorial on the site to making an Arduino on a breadboard and they  use two 10uF capacitors before and after the powersupply , my question is why that value? and should it be changed once made on a pcb as oppose to a breadboard ? and would changing it to a surfacemount  cap mean an adjustment in value?
258  Using Arduino / General Electronics / Adding FT232R chip to Arduino Clone on: August 25, 2011, 12:52:27 am
Ok fellas so i have been looking at the FT232R chip and trying to figure out what is needed to get this baby working with a home made Arduino using the 328p-pu

I have a breakout board from Sparkfun and when using it to upload a sketch all i need is to connect its Rx to my arduinos tx and its Tx to my arduinos Rx , as well as gnd and power , now according to the latest data sheet provided by sparks the chip use to require some resistor but it says it no longer does  
So aside from the chip , a usb plug and an arduino board what else would i need to make this work? and what other connections must be made?

OH must wire the Dtr ! for proper resetting .... what else as  far as components and connections go?

datasheet also says pin 26 "test" must be grounded for normal operation.
Quote
26
TEST
Input
Puts the device into I.C. test mode. Must be tied to GND for normal operation.
259  Using Arduino / Project Guidance / Re: Very Small Arduino on: August 25, 2011, 12:20:48 am
That'll be fun,  im down for 5
260  Using Arduino / Project Guidance / Re: Very Small Arduino on: August 25, 2011, 12:07:43 am
how small is the chip? im not sure if my soldering is up to par?
261  Using Arduino / Project Guidance / Re: Ok hear me out: Using Car Led Strips with an Ardunio on: August 23, 2011, 04:33:39 am
I actually just  made interior lights for a friends car using RGB leds and 3 pots to mix  the colors to make  any color of her pleasing .. But i will be changing to LED strips , hopefully i could find RGB strips , but definitely can be done, only thing is I am not sure how much current the cigarette plug thing can give me...
But yeah its all feasible
262  Using Arduino / Project Guidance / Re: programming language to interact with arduino on: August 23, 2011, 04:28:03 am
If you want something that will ease the making of a graphical interface then Visual Basic can be used to make the GUI without a single line of code, then just simply code what you want done when you press a button etc... and VB pretty much codes it self , not literally but sorta.
263  Using Arduino / General Electronics / Re: How a crystal works and what could replace it? on: August 21, 2011, 06:42:28 pm
Yeah i read through the PDf and what you get for that slight difference in size is a lot more of options. I thought the RTC and Jtag where a neat addition
264  Using Arduino / General Electronics / Re: How a crystal works and what could replace it? on: August 21, 2011, 06:26:45 pm
Ah thanks I have to give that data sheet a look even if i dont understand half of it , not really looking to create chaos just wanted to better understand what the pins accept as a clock.

crossroads i was looking at the Bobuino rev 17, that thing is a beast!!
265  Using Arduino / General Electronics / How a crystal works and what could replace it? on: August 21, 2011, 05:49:03 pm
Can a crystal be replaced by anything that outputs  A frequency? does it have to be constant,  can it oscillate , like fade from 20 to 16mhz  and back?

Because i was just pondering away, and my understanding of crystals maybe be totally off, but i was thinking what if you had some of those brain wave sensors and then wire that to pins 9 and 10 where the crystal goes on the 328p and if you load the blink sketch for example it obviously will not blink once per second but more erratically , my question is would it even blink at all?

Is a frequency simply highs and lows if so can i use another arduino to make a frequency using PWM and wire it to where an atmegas crystal would go?
266  Using Arduino / Project Guidance / Re: Using PWM to control the speed of a computer fan = ok? on: August 21, 2011, 04:30:39 pm
its like the wind blows in his face as he goes faster!!
267  Using Arduino / Project Guidance / Re: Controlling sounds via accelerometer; feasible? on: August 14, 2011, 06:34:21 am
the accelerometer part definitely, thats just a matter of programming,  the overlap part i do not know
268  Using Arduino / Project Guidance / Driving Leds through own POWER rail vs I/O pins on: August 14, 2011, 05:52:47 am
Hey fellas, i need to have 6 leds running , only 3 of them are constantly on , and the other 3 are RGB leds with a common anode and i am PWMing them
Now since my rgb leds are common anode would it be better to drive each of the 6 leds with its own pin set high  , or make a power rail and power them all from there, i also have 4 pots should i also add these to the power rail ?

Basically its 3 rgb leds with a pot to control each red green and blue value, but the RGB's will be wired a little far from the pot so above each pot i want a red and blue and green led to show which color that pot is driving...
i just do not  know which way would be better practice  , the 4th pot is to control brightness which answers part of my question if im going to control brightness which will be through the RGB's common anode all on the same rail then i should not connect my pots to that same rail...right?
269  Using Arduino / Microcontrollers / Bootloading A blank Mega 2560 on: August 10, 2011, 10:33:36 am
Would bootloading a Mega2560 on a standalone board be the same as a 328? Aside from the wiring difference could i just use the Arduino IDE burn bootloader option ? and why on earth does this site say it cost over $700 dollars?
http://www.newark.com/jsp/search/productdetail.jsp?SKU=51P1793&CMP=AFC-GB100000001 and next to it there is a similar one for 16 bucks, i know which one i would go for, also is the pin out the same as the chip used on the older mega, because when i go to the Mega page on the arduino site it has a link for the pin out of the 2560 but it asks for a password so thats not much help
270  Using Arduino / General Electronics / Etching Pcb on: August 09, 2011, 11:16:50 am
Do any of you guys know where i could find some colored PCB? I cant seem to find any anywhere, preferably a nice white or fancy black ones
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