Hi...as per my experience you can built the open source volatile fpga board. The Spartan 6 LX9 TQFP 144 is the cheapest and most readily available chip on the market.This board has 32 pins available on the Wing headers, 8-12 are reserved for USB, and the remainder go to the high speed Mini PCI Express connector for things like memory, high speed ADC, high speed USB etc. To the point where it would be a no brainer to throw this in a project and forget about it, like the Arduino.
printed circuits assembly
