Collin D. Johnson
AI experiments and side projects.
I'm a web designer and developer based in American Fork, Utah. By day I run Virdis.io (conversion-focused sites for B2B SaaS) and Patchwork Sites (small-business sites shipped in a week). This personal site is where I post AI experiments and rough drafts — things may be broken or unfinished, that's the point.
Recent projects
MLX Fine-Tuning Kit
May 2026A reusable playbook for fine-tuning open-source LLMs locally on Apple Silicon — templates, worked examples, and the workflow I actually use.
llmmlxfine-tuning
LLM VRAM Calculator
May 2026Estimate whether a given language model will fit in your GPU's VRAM for inference or fine-tuning.
llmtoolinteractive