Compact Gowin GW2AR board with HDMI, audio amplifier, TF card slot, SDRAM, and onboard debugger.
GW2AR-LV18QN88C8/I7open toolchain28.17 USDeducationvideoaudiorisc-v
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Enter board slugs separated by commas, for example: sipeed/tang-nano-20k,icebreaker/icebreaker.
Open-hardware Lattice ECP5 board used for open-source FPGA development, education, LiteX and retro-computing projects.
LFE5U-85F-6BG381Copen toolchainprice unknowneducationvideoretrorisc-v
| Field | Tang Nano 20K | ULX3S |
|---|---|---|
| Chip | GW2AR-LV18QN88C8/I7 | LFE5U-85F-6BG381C |
| Family | GW2A/GW2AR | ECP5 |
| Device type | FPGA | FPGA |
| Price | 28.17 USD | unknown |
| Toolchains | Gowin EDA, Yosys + nextpnr-gowin + Apicula | Yosys + nextpnr + Project Trellis |
| Open toolchain | yes | yes |
| Interfaces | HDMI, MAX98357A I2S amplifier path, TF card slot, USB Type-C, Onboard BL616 JTAG, USB UART | Digital video connector, SD card, USB |
| Memory | 32-bit SDR SDRAM 64 Mbit, Onboard flash 64 Mbit | SDRAM varies by revision |
| Documentation | 78 | 72 |
| Difficulty | beginner | intermediate |
| Openness score | 76 | 95 |
| Where to get help | Sipeed forum, r/GowinFPGA | ULX3S project links |
| Typical risks | Verify exact board revision before using pin labels, constraints, or power assumptions. Onboard debugger recognition Flash persistence mode | Memory, USB and video details are revision-dependent; check the exact PCB revision. |
| Better for | beginner learning | open-source flow |