[snitty]

The FPGA is a Lattice LFE5U-25F, about $20

https://www.digikey.com/en/products/detail/lattice-semicondu...

[crote]

Or about $5 on LCSC.

[greenbit]

Thank you for surfacing that info, was wondering if I seriously had to go start opening files to find out.

Btw, that's a 256 pin BGA part, grandad's Weller cannot help.

[tremon]

Curious why they didn't use the LFE5U-12F, I can't imagine this project maxing out even the smallest modern FPGA.

[rowanG077]

Even better. The LFE5U-12F is just a 25F in terms of resources you can full utilize it with nextpnr. I expect lattice didn't find it economical to have a truly separate production process for it.