Gowin GW2A-18 dock-style board intended for secondary development with more connectors than Tang Nano boards.
GW2A-LV18PG256C8/I7open toolchainprice unknowneducationvideonetworkingrisc-v
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Open-source educational Lattice iCE40UP5K board designed around the Yosys, nextpnr and IceStorm flow.
iCE40UP5K-SG48open toolchainprice unknowneducationcontroldspformal
| Field | Tang Primer 20K Dock | iCEBreaker |
|---|---|---|
| Chip | GW2A-LV18PG256C8/I7 | iCE40UP5K-SG48 |
| Family | GW2A | iCE40 UltraPlus |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Gowin EDA, Yosys + nextpnr-gowin + Apicula | Yosys + nextpnr + IceStorm, Lattice Diamond Programmer |
| Open toolchain | yes | yes |
| Interfaces | Ethernet, HDMI, USB 2.0, SD card, JTAG/UART connector | microUSB FT2232H, FT2232H programming, USB serial |
| Memory | DDR3 1 Gbit, NOR flash 64 Mbit | QSPI flash 128 Mbit |
| Documentation | 68 | 82 |
| Difficulty | intermediate | beginner |
| Openness score | 70 | 96 |
| Where to get help | Sipeed forum | iCEBreaker community docs |
| Typical risks | Dock-specific features must be checked against the dock revision documentation. | Check add-on pinout and exact hardware revision before connecting Pmods. |
| Better for | open-source flow | open-source flow |