Digilent Artix-7 board with Vivado WebPACK support, Pmods, Arduino/chipKIT style expansion, DDR3 and Ethernet.
XC7A35TICSG324-1Lprice unknowneducationrisc-vcontroldsp
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Compact Gowin GW2AR board with HDMI, audio amplifier, TF card slot, SDRAM, and onboard debugger.
GW2AR-LV18QN88C8/I7open toolchain28.17 USDeducationvideoaudiorisc-v
Open-source educational Lattice iCE40UP5K board designed around the Yosys, nextpnr and IceStorm flow.
iCE40UP5K-SG48open toolchainprice unknowneducationcontroldspformal
| Field | Arty A7 | Tang Nano 20K | iCEBreaker |
|---|---|---|---|
| Chip | XC7A35TICSG324-1L | GW2AR-LV18QN88C8/I7 | iCE40UP5K-SG48 |
| Family | Artix-7 | GW2A/GW2AR | iCE40 UltraPlus |
| Device type | FPGA | FPGA | FPGA |
| Price | unknown | 28.17 USD | unknown |
| Toolchains | Vivado WebPACK / ML Standard | Gowin EDA, Yosys + nextpnr-gowin + Apicula | Yosys + nextpnr + IceStorm, Lattice Diamond Programmer |
| Open toolchain | no | yes | yes |
| Interfaces | Ethernet, USB UART, USB-JTAG | HDMI, MAX98357A I2S amplifier path, TF card slot, USB Type-C, Onboard BL616 JTAG, USB UART | microUSB FT2232H, FT2232H programming, USB serial |
| Memory | DDR3 variant-specific; verify in Digilent memory tab | 32-bit SDR SDRAM 64 Mbit, Onboard flash 64 Mbit | QSPI flash 128 Mbit |
| Documentation | 86 | 78 | 82 |
| Difficulty | beginner | beginner | beginner |
| Openness score | 20 | 76 | 96 |
| Where to get help | Digilent Forum | Sipeed forum, r/GowinFPGA | iCEBreaker community docs |
| Typical risks | Variant-specific records should be split before publishing exact resources. 35T and 100T variants differ | Verify exact board revision before using pin labels, constraints, or power assumptions. Onboard debugger recognition Flash persistence mode | Check add-on pinout and exact hardware revision before connecting Pmods. |
| Better for | beginner learning | beginner learning | open-source flow |