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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Digilent Artix-7 board with Vivado WebPACK support, Pmods, Arduino/chipKIT style expansion, DDR3 and Ethernet.
XC7A35TICSG324-1Lprice unknowneducationrisc-vcontroldsp
| Field | ULX3S | Arty A7 |
|---|---|---|
| Chip | LFE5U-85F-6BG381C | XC7A35TICSG324-1L |
| 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 | Digital video connector, SD card, USB | Ethernet, USB UART, USB-JTAG |
| Memory | SDRAM varies by revision | DDR3 variant-specific; verify in Digilent memory tab |
| Documentation | 72 | 86 |
| Difficulty | intermediate | beginner |
| Openness score | 95 | 20 |
| Where to get help | ULX3S project links | Digilent Forum |
| Typical risks | Memory, USB and video details are revision-dependent; check the exact PCB revision. | Variant-specific records should be split before publishing exact resources. 35T and 100T variants differ |
| Better for | open-source flow | beginner learning |