Thanks everyone! (I'll check out attachment as well!)
1 technical and the other...opinion I guess..
1.) I am trying to get the Arduino Pro/Pro-Mini bootloader (+3.3v @ 8Mhz external) w/ATmega328 on a blank ATMega329P-AU (TQFP SMD version of the chip)
(actually Im attempting this to help a buddy with his project...... his final PCB's -DID/DO NOT- have any ICSP header/pads broken out so Im attempting to try and put a bootloader on 'pre-assembly')
I need(ed) some sort of jig, so........
I have an item called: "the 1 inch square of goodness" board.. (ie: http://thecustomgeek.com/2012/07/09/one-square-inch-of-goodness/
w/o the TQFP 328P-AU chip on it... so I can use it as a 'jig' of sorts.. to flash the bootloader to the chip(s)..and then start to soldering things together/re-flow..etc..
However...I noticed that this 1 inch square of goodness board has a 16Mhz crystal on-board... (and I wanna flash/use the Pro/Pro-Mini 8Mhz bootloader)
Is there any solution to this? (the end board the flashed chip is going into will have a 8Mhz resonator on-board/external)
Any other ideas on a 'jig' (or solution) to flash blank/standalone TQFP (32-pin) ATmega328P-AU chips?
What I did so far (just to ensure that this 1 inch square of goodness board was in working order, as it was sent to me with this other project stuff to help flash the chips) was to hook it all up...
Loaded Optiloader sketch to my Duemilanove..
then wired things up as so...
Arduino Duemilanove >>> 1ISoG board
D13 >>> D13
D12 >>> D12
D11 >>> D11
D10 >>> RESET (note the 1ISoG board does NOT have the reset pin broken out.. only DTR you have to shot the CAP or use the via next to it)
+5v >>> +5v
GND >>> GND
(120 Ohm resistor on Arduino Duemilanove board between RESET and +5v)
put blank chip on 1ISoG board... and RESET board.. (running Optiloader sketch)..
found chip.. did its 'magic'.. and set-fuses.. all done.
started to blink PIN 13 led.. so I believe it all worked..
(however being that Optiloader is more of a 'auto' detect...right? (Im not sure how once goes about 'setting' it for different clock speeds?).. Im assuming it just found a chip signature.. 'knew'??? it was set-up with a 16Mhz external crystal.... and then loaded the correct bootloader (fuse settings)??
hypothetical situation.. To use Optiloader to load a +3.3 / 8MHz bootloader (fuse settings).. Id need to have the blank chip set up in that simulated environment? (ie: the circuit would need to be laid out using an 8Mhz crystal or resonator....yes?)
I have mainly done +5v @ 16MHz boards..... and only done 1 x +3.3v / 8Mhz (internal) in my life... (and that was just recently)
this current project is just helping out friend......
that being said.. 'is' moving toward +3.3v based boards the trend? (future?).. I see the Due...(and others).. as well as a slew of components and sensors that are mostly +3.3v compliant..
Is that something a noob like myself should be focusing on?.. (I have no background on the Due really...but would like to think the DAC will be used for audio output..and change things up a bit when they become more common)?
Or is +5v stuff 'here to stay' (so to speak)..and this is just another 'branch' to fill a need?