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 Gowin Tang board for projects that need substantially more logic than Tang Nano and Primer boards.
GW5AST-LV138FPG676Aprice unknownvideonetworkingdsprisc-v
| Field | OrangeCrab | Tang Mega 138K |
|---|---|---|
| Chip | LFE5U-25F/85F | GW5AST-LV138FPG676A |
| Family | ECP5 | GW5A |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Yosys + nextpnr + Project Trellis | Gowin EDA |
| Open toolchain | yes | no |
| Interfaces | USB, MicroSD | not verified |
| Memory | DDR3 requires revision check | not verified |
| Documentation | 65 | 45 |
| Difficulty | intermediate | professional |
| Openness score | 92 | 35 |
| Where to get help | OrangeCrab GitHub organization | Sipeed forum |
| Typical risks | Feature set differs across OrangeCrab revisions; verify exact revision. | This entry intentionally avoids detailed connector claims until official board-revision documents are reviewed. |
| Better for | open-source flow | professional prototyping |