Can the Single Sided Serial Arduino use the atmega328 chip?
On all the diagrams it says atmega8 or 168, but i would just assume that the 328 is compatible.
Can I use a rs232 to usb cable to upload sketches, just like my duemilanove?
Thanks,
Brian
Though I haven't tried it, the ATmega48, 88P, 168 and 328 are all part of the same family, so I would say yes.
Can I use a rs232 to usb cable to upload sketches, just like my duemilanove?
I am slightly confused. A duemilanove has onboard USB to serial, and that serial interface is not RS232, but runs at a lower, TTL compatible 5V.
Are you planning on using the board as published, or making changes? I ask because you might want to remove the RS232 buffers so that you could use a USB to TTL serial cable, or even your duemilanove as a USB interface.
HTH
GB
Well I have a cable that is RS232 on one end and USB on the other, with some sort of chip on the RS232 end. On my homemade SSS "severino" I believe that the output on its RS232 is already +/-12v logic?
I looked at the specs, which they seems to have some sort of charge pump caps, but I thought it would need some sort of MAX232 chip or something.
Its entirely possible I will program the ATMEGA328 chip in the Duemilanove and just transfer it to the SSS and use it then.
Thanks,
Brian
but I thought it would need some sort of MAX232 chip or something.
Yes you do, there are lots of chips perhaps the MAX202 is the cheapest.
With RS232 not only is the voltage not compatible with the TTL logic levels of the arduino but also the logic sense is inverted.
There are circuits using a few transistors to turn this around but a MAX chip is by far the simplest and most reliable solution.
If you built the "Single Sided Serial Arduino" that is on the hardware page (ANY of them), then it has a DB9 connector with "real" rs232 levels present, and you could/should use a real usb/rs232 adapter to talk to it (and NOT one of the FTDI or cell-phone based "TTL level" usb/serial converters. And NOT like a duemilanove.)
Thanks guys
when I plug in the cable by itself, no SSS attached, it installed some sort of Prolific driver? Is this usable? I would like not to burn something up.
Brian
No dice? ;D
Is the prolific driver a usable RS232 to USB cable?