The Butterfly One (Papilio One) Gadget Development board is available for $49.99 in the online store.
The Butterfly One is a Gadget development board based on the Xilinx Spartan 3E FPGA (datasheet). It has 48 I/O lines, dual channel USB, integrated JTAG programmer, 4 power supplies, and a power connector. It provides everything needed to make Gadgets using Arduino compatible sketches or standard VHDL/Verilog. Hardware can be added without any soldering or bread boarding using the provided “Wing” slots. The Butterfly One places the focus on bringing Gadgets to life rather than reading through datasheets.
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