Open-hardware Lattice ECP5 board used for open-source FPGA development, education, LiteX and retro-computing projects.
LFE5U-85F-6BG381Copen toolchainprice unknowneducationvideoretrorisc-v
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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 | ULX3S | Tang Nano 9K |
|---|---|---|
| Chip | LFE5U-85F-6BG381C | 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 | Digital video connector, SD card, USB | HDMI, USB Type-C, Onboard JTAG, USB UART |
| Memory | SDRAM varies by revision | PSRAM 64 Mbit, Onboard flash 32 Mbit |
| Documentation | 72 | 70 |
| Difficulty | intermediate | beginner |
| Openness score | 95 | 72 |
| Where to get help | ULX3S project links | r/GowinFPGA |
| Typical risks | Memory, USB and video details are revision-dependent; check the exact PCB 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 |