Hi...
tonight was the big breakthrough in understanding.
by using the brilliant westfw optiloader I can do with less
and have a backup UNO which also functions as a holder/breadboard
for blank 328Ps
Yes?
i've seen two arduinos wired up and mention of ArduinoISP firmware.
yet, I haven't found and confirmation that the wiring example works with TWO
UNO R3s
(plus with optiloader the reset switch resistor isn't needed i think?)
IF it is possible to use the 2nd UNO just as though it was a wired breadboard?
I guess (obviously?) that I do NOT take the programmed 328 when using
optiloader... and then I wouldn't need to wire up the blank 328P in a breadboard
AND it would be therefore easier to use two UNOs to use optiloader?
Are there any gottchas? Something I've missed?
I'm thinking.... hey' love the 'less' vibe of not having a programmer.
Cool to have two identical UNO R3s and that either one can be a
blank 328P holder, mostly wired up already, while the 2nd until
runs optiloader and can program the blank 328.
Big yes?
So, I'd simply hook up the few wires from the UNO running optiloader
hit the reset switch and it would program the 2nd UNO which has had it's
factory 328 removed an a blank put in for programming.
Another Big Yes?
Whoa....So close!
THANK EVERYONE!
UPDATE: now reading this
http://arduino.cc/forum/index.php/topic,64105.0.html
So, the mention of ArduinoISP refers to the wiring in this diagram (link below)
So, simply replace the technique for ArduinoISP (link below)
with the optiloader technique. ie. primarily do NOT removing the 328 from the UNO.