Wiki-Doc

Projects, notes and small web tools I build and keep coming back to, all hosted on a Raspberry Pi at home. How it works →

Tools

WikEq: 50 engineering equations across dynamics, fluids, electricity and more. Pick any variable to solve for, plug in numbers, and copy the Python.
Wiring Tool: Lay out components, wire their pins into named nets, auto-route, and export a netlist, CSV, SVG or PDF.
Unit Conversion: Convert engineering units and look up physical constants.
CSV → Mermaid: Turn a CSV of connections into a Mermaid diagram.
Recipes: Recipes trimmed down to only what you need: ingredients, steps and nutrition.

Qwordy: Daily word games. Build as many words as you can from six letters, or learn new words in Vocab Builder.
Marble Tilt: Tilt the maze to roll a marble through five rounds of escalating mazes, and race your own ghost.

IoT Database: Pinouts, photos, dimensions and links for the microcontrollers and sensors I use most: ESP32, ESP8266, RP2040, Raspberry Pi, MPU-6050 and more.
SF Neighborhood Atlas: A guide to San Francisco neighborhoods, from Russian Hill to the Sunset, with an interactive map.
Search: Search every page on the site.

Clock Maker: Custom clock builds, and what goes into making them.
Time Tilt: A smart ESP-based tilt clock, with its PCB and code.
Touch Tone 2.0: A capacitive-touch I2C piano board built on the MPR121.
DIY Stereo Vision: Depth measurement from two cameras on a Raspberry Pi 5.
E-Ink Display: A DIY e-ink display with network scanning.
Joystick Mouse: A beginner CircuitPython project: build your own mouse, with printable enclosure.
3D Printing: Prints worth making: Babushka coasters, Keylids, a band stand, building blocks and more.
Art: Engineering-aided art, from photo to plotted drawing, including Cricut plotter art.
WLED lights: A network of ESP boards running WLED.
Python libraries: DocNet builds wiki documentation from a file structure, and Fleet-SSH manages a fleet of edge computers.

Raspberry Pi and servers: Cloudflare tunnel + Flask on a Pi, running scripts as services, Pi troubleshooting, run scripts
Command line: SSH, SSH keys, rsync, aliases, paths
Diagrams and docs: Mermaid diagrams, Thought Cloud, emoji setup, markdown render test
Card games: Pok Deng, Pok Dek