FPGA experiments
Going down to the gates — Verilog projects on Alhambra-II and iCEstick boards.
VerilogAlhambra-IIiCEstickicestorm / yosys / nextpnr
Hands-on Verilog projects on real FPGA hardware — Alhambra-II and iCEstick — using the open-source iCE40 toolchain (yosys for synthesis, nextpnr for place-and-route, icestorm for the bitstream). Companion to the HDLBits problem set: same instinct (understand computation from the bottom up), different mode (build something that blinks, counts, or talks to a peripheral on actual silicon).