Jim's Depository

Real fonts on small screens. No shaping, no hinting, no strings — you own the pixels, it owns the curves.

RFC 5228 email filtering using the Sieve language. I mean, I fell bad making you use that, but it is what there is. And this will do it.

I’m using this 750 line Swift Concurrency friendly SQLite interface in deployed systems. It is holding up well.

When a framebuffer cannot fit in RAM, fixed-Huffman DEFLATE can turn banded rendering into browser-ready PNGs without zlib’s workspace. The trade-off is less compression than a full encoder, but a practical HTTP screenshot path for tiny embedded dashboards. Dashboards compress about 10x compared to 30x for an unconstrained compressor.

IndexNow is an aggregator for sending notices that a web page is updated to interested parties. They have an interesting one ended authentication mechanism.

For months this site has been shunned by Google. Something happened now it will discover all the pages, but not look at them or index them. It says it is planning to, but never does it. They are celebrating their probably accidental black holing of the site by giving me an award for them cutting my clicks to 5 in a month.

A real-world Lua policy manages dual-voltage battery banks, solar, generators, relays, and inverter interlocks—plus a practical workflow for staging configurations, flashing firmware, and inspecting controller snapshots with `power4ctl`.

This Concurrency–friendly SQLite layer offers actor-owned connections, explicit read/write transactions, prepared statements, and typed row decoding in 765 lines of Swift.

A USB serial tool polls SRNE-based inverter registers via Modbus, emits periodic or one-shot JSON, and can toggle power-saver mode for basic automation.

blescan uses Rust, zbus, and BlueZ’s D-Bus APIs to list nearby advertisers or inspect a device’s GATT services, characteristics, and readable values. Prebuilt Debian packages are available for Raspberry Pi.