Hi
I followed the tutorila to build a bread-board version of the Arduino as can be found here:
I think I sucessfully loaded the bootloader onto a 328p-pu chip, but now that I have done that, I'd like to know if it is possible to load sketches to this new breadboard Arduino using a FOCA board, and if so, which pins to connect, assuming that I will not provide the Breadboard Arduino with external power.
Can someone help me with confirming how/if this can be done?
What is a FOCA board - please post a link to its datasheet.
Almost certainly you just need to replicate the wiring that is shown in the tutorial you linked to.
You should just need connections for Rx Tx GND and Reset.
...R
Hi Robin2
This is a link to the manufacturers page: https://www.itead.cc/foca-pro.html
I guess it's basically just a slightly vamped version of an FTDI. I use it successfully on my Arduino Pro Mini's.
It's basically VCC, GND, Reset and TX and RX - just not sure exactly which pins on the "raw" Atmega chips I need to connect it to?
The FOCA board can push out either 3,3 or 5v, and the "raw" power input pins on the chips take 7 to 9 v if I'm not mistaken - so which "power" pin on the Atmega is perhaps the more pertinent question.
I use it successfully on my Arduino Pro Mini's.
Make the same connections on your DIP part then:
+5, Gnd, Tx, Rx, DTR thru 0.1uF cap to Reset pin, with 10K pullup to +5.
Same die inside the package, only difference is the type of legs presented to the outside world.
This is what I currently use as a reference to the chip wrt pin-outs.
So I can take the 5v from Foca to the VCC (Pin7 chip)?
How would the wiring work for the DTR? DTR on FOCA connected to 0.1uF Capt leg1, Cap leg2 connect to Reset (Pin1 chip) as well as connnected to resistor leg1, and then resistor leg2 to VCC?
Thx for the help!