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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Enter board slugs separated by commas, for example: sipeed/tang-nano-20k,icebreaker/icebreaker.
Larger Digilent Artix-7 trainer board for courses needing more peripherals than Basys 3.
XC7A100T-1CSG324Cprice unknowneducationvideoaudiorisc-v
| Field | OrangeCrab | Nexys A7 |
|---|---|---|
| Chip | LFE5U-25F/85F | XC7A100T-1CSG324C |
| 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, VGA, USB |
| Memory | DDR3 requires revision check | DDR2 requires verification from Digilent resource center |
| Documentation | 65 | 82 |
| Difficulty | intermediate | beginner |
| Openness score | 92 | 15 |
| Where to get help | OrangeCrab GitHub organization | Digilent Forum |
| Typical risks | Feature set differs across OrangeCrab revisions; verify exact revision. | Split 50T/100T variants before publishing exact resource counts. |
| Better for | open-source flow | beginner learning |