I found new the heart of my next system
US40$ buys a compact PCB module with a
32bit ARM cortex m3 processor (100mips).
128k flash, 20k ram
High resolution 2,8 inch full color touch screen.
SD card slot.
Dataflash suport.
USB B plus.
RS232 DB9.
Expansion connector for stepper drivers etc.
Jtag debugging
Non volatile serial port based boot loader.
[
cgi.ebay.in]
The future is here.
Murray