So I am making my own board using the atmega 328 but i have some problems
1. What is the difference between the atmega 328p and atmega328p-pu
2.I wanted to use the atmega 328 with dueminilove bootloader but I can only find atmega 328p-pu ones with uno. So would the circuit be the same and how would i program it would i use a ftdi cable or an atmega 8u2.
3.If i used a ftdi basic what do i do with the dtr(I know dtr is to auto reset the atmega but do i just connect that to reset on arduino)
and cts pins.
4. Do i just connect the ftdi to the computer, and when i do will it automatically create a COM port.
Like the actual board.
** 1) None, except -PU**
1) None, except -PU specifies the package format, which in this case would be the dual inline package. Which I assume it’s what is preferable.
2) Is there any particular reason you want to use the duemilenove bootloader? Regardless, if you have already have an arduino board and a presumably a chip loaded with the bootloader you want, you can load that bootloader to other chips using the arduino as an ISP programmer. If you don’t, a programmer is always a nice to have and the USBasp for instance can be bought on ebay very cheaply. Using different bootloaders does not entice circuitry differences, just settings.
3) to my knowledge, yes.
4) I would expect so (althought I am not sure if windows might need some driver previous installed or not)
thanks for the help I wanted
thanks for the help I wanted to use dueminilove cause thats what i have right now and i thought it would be easier also doesnt uno need the atmega 8u2 instead of the ftdi chip
and for reset I just have to connect the DTR directly to the reset
