I`m curious why there is no reprap printing board with a AT90USB1287 Chip-set on the market ?
pro`s:
Direct USB Support, no FTDI which slow`s down the communication, probably the most important advantage.
44 I/O`s compared to the 32 Pin`s of the 1284p, so enough for a 2nd Extruder and other stuff.
Up to 20mhz compatible, so 25% more Speed than actual 16mhz Boards
QFN package available, so a small board layout possible.
not much redesign necessary for a new board-layout, the firmware should also support it already.
con`s
Atmega 2560 has 86 I/O`s , but i don`t think they are really all necessary ?
combined with some DVR8825 and a board-layout like the printrboard (or even smaller when using the backside for components) this should give a priceworth and nice controllerboard ?
so for me the chips sounds ideal for most printing solutions atm. (maximum 2 FDM printhead`s), or do i miss something ?
Chri
pro`s:
Direct USB Support, no FTDI which slow`s down the communication, probably the most important advantage.
44 I/O`s compared to the 32 Pin`s of the 1284p, so enough for a 2nd Extruder and other stuff.
Up to 20mhz compatible, so 25% more Speed than actual 16mhz Boards
QFN package available, so a small board layout possible.
not much redesign necessary for a new board-layout, the firmware should also support it already.
con`s
Atmega 2560 has 86 I/O`s , but i don`t think they are really all necessary ?
combined with some DVR8825 and a board-layout like the printrboard (or even smaller when using the backside for components) this should give a priceworth and nice controllerboard ?
so for me the chips sounds ideal for most printing solutions atm. (maximum 2 FDM printhead`s), or do i miss something ?
Chri