Compact open-source Lattice ECP5 board commonly used with LiteX, USB and open-source ECP5 flows.
LFE5U-25F/85Fopen toolchainprice unknownrisc-vlinuxusbeducation
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Digilent Artix-7 board with Vivado WebPACK support, Pmods, Arduino/chipKIT style expansion, DDR3 and Ethernet.
XC7A35TICSG324-1Lprice unknowneducationrisc-vcontroldsp
| Field | OrangeCrab | Arty A7 |
|---|---|---|
| Chip | LFE5U-25F/85F | XC7A35TICSG324-1L |
| Family | ECP5 | Artix-7 |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Yosys + nextpnr + Project Trellis | Vivado WebPACK / ML Standard |
| Open toolchain | yes | no |
| Interfaces | USB, MicroSD | Ethernet, USB UART, USB-JTAG |
| Memory | DDR3 requires revision check | DDR3 variant-specific; verify in Digilent memory tab |
| Documentation | 65 | 86 |
| Difficulty | intermediate | beginner |
| Openness score | 92 | 20 |
| Where to get help | OrangeCrab GitHub organization | Digilent Forum |
| Typical risks | Feature set differs across OrangeCrab revisions; verify exact revision. | Variant-specific records should be split before publishing exact resources. 35T and 100T variants differ |
| Better for | open-source flow | beginner learning |