Open-source educational Lattice iCE40UP5K board designed around the Yosys, nextpnr and IceStorm flow.
iCE40UP5K-SG48open toolchainprice unknowneducationcontroldspformal
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Small Gowin GW1NR board for low-cost learning, HDMI experiments, softcore demos, and open-source Gowin flow exploration.
GW1NR-LV9QN88PC6/I5open toolchain14.5 USDeducationvideorisc-vretro
| Field | iCEBreaker | Tang Nano 9K |
|---|---|---|
| Chip | iCE40UP5K-SG48 | GW1NR-LV9QN88PC6/I5 |
| Family | iCE40 UltraPlus | GW1NR / LittleBee |
| Device type | FPGA | FPGA |
| Price | unknown | 14.5 USD |
| Toolchains | Yosys + nextpnr + IceStorm, Lattice Diamond Programmer | Gowin EDA, Yosys + nextpnr-gowin + Apicula |
| Open toolchain | yes | yes |
| Interfaces | microUSB FT2232H, FT2232H programming, USB serial | HDMI, USB Type-C, Onboard JTAG, USB UART |
| Memory | QSPI flash 128 Mbit | PSRAM 64 Mbit, Onboard flash 32 Mbit |
| Documentation | 82 | 70 |
| Difficulty | beginner | beginner |
| Openness score | 96 | 72 |
| Where to get help | iCEBreaker community docs | r/GowinFPGA |
| Typical risks | Check add-on pinout and exact hardware revision before connecting Pmods. | Pinout and constraints must be taken from the exact board revision files, not inferred from this catalog entry. Open-source flow is feature-dependent |
| Better for | open-source flow | beginner learning |