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1. devphys devphys Public

   Open-source TCAD for SkyWater Sky130 calibrated against measured silicon from 300 K to 77 K - drift-diffusion, dopant freeze-out, cryogenic SS saturation quantified, OpenVAF/ngspice compact-model loop

   Python 3 2

2. cartridge_pmod cartridge_pmod Public

   QSPI flash + PSRAM + audio cartridge Pmod for TinyTapeout — a drop-in remix of the stock QSPI Pmod with sigma-delta audio (RC filter + amp + jack) on the CS2 pin. KiCad, JLC-assemblable

   Python 1

3. koti koti Public

   A home computer built from the CPU up: an RV32IMA core with an sv32 MMU running mainline Linux 6.12 on a ULX3S 85F FPGA — 32 MB SDRAM, microSD, HDMI console, USB keyboard, networking, and it boots …

   SystemVerilog 1

4. stdcells stdcells Public

   A standard-cell library I designed from scratch for sky130: transistor sizing from device physics, my own gdstk layouts signed off with the official KLayout DRC/LVS decks, and my own ngspice-to-Lib…

   Python

5. vertical-slice vertical-slice Public

   The fabricated CORDIC-1, rebuilt on a standard-cell library I designed myself: device physics, transistor sizing, cell layouts and ngspice-to-Liberty characterization all mine. Same RTL bit for bit…

   Verilog

6. ulx3s-cover ulx3s-cover Public

   A laser-cut plexiglass cover for the ULX3S FPGA board — none is sold, so this generates one: two 3 mm clear acrylic plates on M3 nylon standoffs, J1/J2 left completely open, DXF and SVG cut files d…

   Python