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.
Small Gowin GW1NR board for low-cost learning, HDMI experiments, softcore demos, and open-source Gowin flow exploration.
GW1NR-LV9QN88PC6/I5open toolchain14.5 USDeducationvideorisc-vretro
| Field | OrangeCrab | Tang Nano 9K |
|---|---|---|
| Chip | LFE5U-25F/85F | GW1NR-LV9QN88PC6/I5 |
| Family | ECP5 | GW1NR / LittleBee |
| Device type | FPGA | FPGA |
| Price | unknown | 14.5 USD |
| Toolchains | Yosys + nextpnr + Project Trellis | Gowin EDA, Yosys + nextpnr-gowin + Apicula |
| Open toolchain | yes | yes |
| Interfaces | USB, MicroSD | HDMI, USB Type-C, Onboard JTAG, USB UART |
| Memory | DDR3 requires revision check | PSRAM 64 Mbit, Onboard flash 32 Mbit |
| Documentation | 65 | 70 |
| Difficulty | intermediate | beginner |
| Openness score | 92 | 72 |
| Where to get help | OrangeCrab GitHub organization | r/GowinFPGA |
| Typical risks | Feature set differs across OrangeCrab revisions; verify exact revision. | Pinout and constraints must be taken from the exact board revision files, not inferred from this catalog entry. Open-source flow is feature-dependent |
| Better for | open-source flow | beginner learning |