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