Arduino Forum

Forum 2005-2010 (read only) => General => Exhibition => Topic started by: 32teeth on Jun 24, 2010, 03:45 pm

Title: Standalone + FTDI
Post by: 32teeth on Jun 24, 2010, 03:45 pm
Hey all, just wanted to show a small project i have completed for myself.
This was done for pure experimentation of a standalone arduino programmed via an FTDI

here are some pics

basic top view
(http://farm2.static.flickr.com/1179/4730095998_019a4dd0a4.jpg)

same as above but from FTDI view
(http://farm2.static.flickr.com/1132/4730098530_077d5c256c.jpg)

the underside
(http://farm2.static.flickr.com/1191/4729453183_929b21eac9.jpg)

connected via FTDI to a USB-BUB
(http://farm2.static.flickr.com/1111/4729454251_8e1dcfc0f2.jpg)

powered and ready
(http://farm2.static.flickr.com/1018/4729454931_57f0ce8b19.jpg)

green LED lit by blink sketch (pin 13)
(http://farm2.static.flickr.com/1041/4730101808_322dc42223.jpg)

additional image showing smd led and resistors
top led = power (red)
middle led = tx (blue)
bottom led = rx (blue)
(http://farm2.static.flickr.com/1114/4730097790_42e6aeb14b.jpg)

Title: Re: Standalone + FTDI
Post by: cr0sh on Jun 24, 2010, 08:36 pm
Nice job; clean and basic, and I like the use of SMT parts with thru-hole!

:)
Title: Re: Standalone + FTDI
Post by: 32teeth on Jun 24, 2010, 08:43 pm
thanks!
if you notice in the first picture the resistor for the reset switch is soldered between one of the thru hole legs of the switch and the power rails directly (bottom left)
Title: Re: Standalone + FTDI
Post by: AlphaZeta on Jun 24, 2010, 08:55 pm
Wow. That's quite a button 8-)
Title: Re: Standalone + FTDI
Post by: 32teeth on Jun 24, 2010, 09:04 pm
yep.
there is a shop near me that sells the 12x12 buttons, love em. they also sell those 2 prong mini button
Title: Re: Standalone + FTDI
Post by: alansmk on Jun 25, 2010, 11:50 am
this is awesome!  ;D
like the other person said, i love the SMD led!

i am just a curious noob, but why don't you need a crystal at pin 9 & 10? Or that huge capacitor looking thing is the crystal? O.o
Title: Re: Standalone + FTDI
Post by: 32teeth on Jun 25, 2010, 12:40 pm
i think you are speaking about the ceramic resonator
it does the same job as a crystal + 2 caps. at least i haven run into any issues yet

last night i swapped out the green leds (they where actually dual - orange/green and gave me issues)
and managed to connect the pins 2-13 to the female header

(http://farm2.static.flickr.com/1309/4731455627_4a7ef796a5.jpg)
(http://farm2.static.flickr.com/1063/4732099176_f6fdd87986.jpg)
Title: Re: Standalone + FTDI
Post by: raidthewood on Jul 09, 2010, 02:37 am
Just wondering.....As i am also a curious noob....Why do you need that long resistor?... (corrected)

I am also trying to build an arduino standalone. And i am having some trouble finding all of the nessacary parts....where did you get yours? (btw....i have no idea how to burn a bootLoader...could i get a preburnt one from the same place you got yours?)

Oh..before i forget.....Was this hard?...i mean..... i dont even need the serial programming....i just need the....bare bones of the arduino....
Title: Re: Standalone + FTDI
Post by: retrolefty on Jul 09, 2010, 02:42 am
Quote
Why do you need that long capacitor?...


Are you speaking of that 9 pin orange SIP resistor array? If so that is just a more compact was of using multiple resistors, if they are of the same value. Saves space and labor.

Lefty
Title: Re: Standalone + FTDI
Post by: raidthewood on Jul 09, 2010, 02:47 am
sooo....if i were making something similar.....would i do the same thing....attach resistors to each dig. Pin?
Title: Re: Standalone + FTDI
Post by: retrolefty on Jul 09, 2010, 02:52 am
Quote
sooo....if i were making something similar.....would i do the same thing....attach resistors to each dig. Pin?


Only if you wish to drive a LED with the digital output pin. The resistor is to limit the current to a safe level.

Lefty
Title: Re: Standalone + FTDI
Post by: raidthewood on Jul 09, 2010, 02:56 am
so....do you think this would be simple to make?...do you have any idea where i could acquire these parts?
Title: Re: Standalone + FTDI
Post by: 32teeth on Jul 12, 2010, 08:34 pm
Quote
Quote
Quote:
sooo....if i were making something similar.....would i do the same thing....attach resistors to each dig. Pin?



Only if you wish to drive a LED with the digital output pin. The resistor is to limit the current to a safe level.

Lefty


The resistors are not the output of the digital pins directly, take a look at the original image
there are additional wires going to the female harness without resistors
Title: Re: Standalone + FTDI
Post by: Meinaart on Jul 13, 2010, 11:53 am
Slightly off topic question; where did you order the green protoboard? Looks nice ;), better then the typical orange/yellow protoboard.
Title: Re: Standalone + FTDI
Post by: 32teeth on Jul 13, 2010, 12:25 pm
there is a pretty decent hobby/university electronics supply store near me
http://creatroninc.com/product.php?ProductID=186