Open-source educational Lattice iCE40UP5K board designed around the Yosys, nextpnr and IceStorm flow.
iCE40UP5K-SG48open toolchainprice unknowneducationcontroldspformal
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Compact open-source Lattice ECP5 board commonly used with LiteX, USB and open-source ECP5 flows.
LFE5U-25F/85Fopen toolchainprice unknownrisc-vlinuxusbeducation
| Field | iCEBreaker | OrangeCrab |
|---|---|---|
| Chip | iCE40UP5K-SG48 | LFE5U-25F/85F |
| Family | iCE40 UltraPlus | ECP5 |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Yosys + nextpnr + IceStorm, Lattice Diamond Programmer | Yosys + nextpnr + Project Trellis |
| Open toolchain | yes | yes |
| Interfaces | microUSB FT2232H, FT2232H programming, USB serial | USB, MicroSD |
| Memory | QSPI flash 128 Mbit | DDR3 requires revision check |
| Documentation | 82 | 65 |
| Difficulty | beginner | intermediate |
| Openness score | 96 | 92 |
| Where to get help | iCEBreaker community docs | OrangeCrab GitHub organization |
| Typical risks | Check add-on pinout and exact hardware revision before connecting Pmods. | Feature set differs across OrangeCrab revisions; verify exact revision. |
| Better for | open-source flow | open-source flow |