Projects

What I've been building

Small devices, printed and soldered on my desk, and web apps for the people around me.

2026 · Printed · soldered · flashed

AB98

A pocket music player shaped like a cassette Walkman

Plays music from a micro SD card through a headphone jack, with a little cassette on screen whose reels turn while a song plays. When you want new music it joins your Wi-Fi, or starts its own hotspot, and serves a web page styled as the same Walkman to manage the card.

MP3, AAC, FLAC and WAV, a folder per tape
Playlists and smart lists, on the device and the web
Copies albums and artists from a Navidrome server
Sleeps after five minutes; the play key wakes it
English, Spanish, Vietnamese and Japanese

ESP32-S3PCM5102A DACSvelteKitFreeCADPLA

66.2 × 47.2 × 19 mm closed. The lid screws on from the sides: four M2 countersunk screws through the left and right walls into heat-set inserts. Amber lines are hand-soldered: I2S to the DAC, SPI to the card, the supply switch, and the four keys.

2026 · Printed · soldered · flashed

Máy Anh Cũ

A tiny film camera with a web darkroom

A camera, and a film emulator, built around a thumb-sized ESP32-S3 with an OV2640 sensor. Load a roll of a film stock, shoot frame by frame through a live viewfinder, then browse and download the rolls from a page the camera serves itself.

Film stocks that tune the sensor before every shot
Live viewfinder with a grid on a 1.8" screen
Rolls saved to micro SD, frame by frame
Flash LED and a real shutter button
Battery gauge, radio off until you need it

XIAO ESP32-S3 SenseOV2640ST7735MAX17048SvelteKit

88 × 52 × 24.8 mm, two printed shells held by four screwed posts. Amber lines are hand-soldered: eight to the screen, three to the buttons, four to the gauge, the flash through its driver. Red is the cell and its pass-through to the XIAO.

2026 · Printed · soldered · flashed

inkbridge

An always-on Home Assistant launcher on e-ink

Two mechanical keys and a 2.13" e-paper screen with a grid of icon buttons, each one a Home Assistant script. Press one and it runs. Everything is configured from a web page the device serves, and it naps in light sleep between presses for weeks on a charge.

Icon grid of scripts, set up from the web
Saved Wi-Fi networks tried in order
Light sleep, instant wake on either key
Lucide icons rasterised to 1-bit for the panel
Two Cherry MX switches, sub-second feedback

XIAO ESP32-S3e-Paper 2.13"Cherry MXHome AssistantSvelteKit

94 × 45 mm, one row on the floor (battery, XIAO, switches) with only the e-paper panel stacked above. Amber lines are hand-soldered: eight to the panel, three to the switches; the cell feeds the XIAO’s BAT pads.

2026 · Web app · self-hosted AI

Trip

A family trip planner everyone edits together

One shared page per trip where plans, lists, photos and documents live under their day, edited live by the whole family. A budget splits expenses across currencies, an assistant turns a brainstorm or a booking into events, and the whole trip prints as a PDF that also works offline.

Self-hosted AI. Every AI feature runs on a small Qwen 3.5 model on my own server (Ollama behind Open WebUI). Bookings, receipts and plans never leave the house.

Live co-editing with presence and comments
Expenses with shares, settlements and currency rates
Local AI: organise notes, read bookings and receipts
Trip PDF and offline reading

SvelteKitSvelte 5SQLiteDrizzleYjsOllama

2026 · Web app · self-hosted AI

Generations

A family tree you can walk in any direction

A genealogy app that loads a person's whole family neighbourhood at once, ancestors, descendants, partners and siblings, and lets you keep walking from any relative without reloading. Writers edit with care: precise genealogical dates, a full audit trail with restore, and GEDCOM in and out.

Self-hosted AI. The family chat runs on a local model (Ollama behind Open WebUI) reading the tree through MCP, so living relatives stay in the house.

Navigable graph from any person
Approximate and ranged genealogical dates
Audit log with one-click restore
GEDCOM 5.5.1 and 7.0 import and export
Ask about the family in a chat, through an MCP server

SvelteKitSQLiteDrizzleGEDCOMMCPOllama

2026 · Web app · self-hosted AI

Revelado

A darkroom that develops photos with AI

Upload a photo, pick a film stock or describe the change you want, and an image-editing model develops it. Paint a mask to edit only part of the frame, compare before and after with a slider, and step back through every version.

Self-hosted AI. Photos are developed by Qwen-Image-Edit in ComfyUI on my own GPU. No photo is sent to a cloud service.

Film presets: Portra 400, Tri-X, CineStill 800T, Velvia 50 and more
Brush masks to edit only part of the image
Before and after compare slider
Version history for every edit

SvelteKitComfyUIQwen-Image-EditDocker

2026 · Web app

E-ink Card

A business card for an e-ink reader

Design a minimal business card for Xteink e-readers, preview it exactly as the e-ink panel will show it, and send it straight to the device over the local network, where it becomes the sleep screen. Everything renders in the browser; nothing leaves your phone except the upload to your own reader.

Pixel-exact preview for the X3 and X4 family
Optional QR code for a link of your choice
Finds a CrossPoint reader on the network and sends it
No accounts, no server-side data

SvelteKitCanvasBMP encoderCrossPoint