chr15m’s gists

chr15m / sidblasterserial.py

Created October 30, 2025 13:03

Control the SIDBlaster USB (SID chip controller) with Python via the ftdi_sio module

	#!/usr/bin/env python3
	"""
	SIDBlaster USB - Serial Interface Demo
	- Demonstrates reading and writing SID registers via serial port.
	- The ftdi_sio module should be loaded and presenting on /dev/ttyUSB0.
	- Tested on SIDBlaster-USB Tic Tac on Linux.
	- Raspberry Pi should work too.
	"""

	import time

chr15m / index.html

Created September 26, 2025 01:22

Test Nostr WebSocket connection from file:/// static HTML

	<!DOCTYPE html>
	<html>
	<head>
	<title>Nostr Feed Test</title>
	<style>
	body {
	background-color: #222;
	color: #eee;
	font-family: 'Courier New', Courier, monospace;
	}

chr15m / deploy-strfry.sh

Last active October 16, 2025 07:04

Deploy strfry Nostr relay to a fresh Ubuntu/Debian VPS

	#!/bin/bash

	set -e

	if [ "$#" -lt 1 ] \|\| [ "$#" -gt 3 ]; then
	echo "Deploys strfry to a fresh Ubuntu VPS."
	echo "(Installs nginx, acme.sh, and builds strfry from scratch)"
	echo
	echo "Usage: $0 HOST [ADMIN_EMAIL] [ADMIN_PUBKEY]"
	echo "Example: $0 my-relay.example.com [email protected] <32-byte-hex-pubkey>"

chr15m / iconloader.cljs

Last active May 11, 2025 12:47

Scittle compile time SVG icon loader

	(ns iconloader
	(:require
	[promesa.core :as p]))

	;; Atom to store the base URL for SVG icons.
	;; Default is "", meaning relative to the current path.
	(defonce svg-base-url (atom ""))

	;; Function to set the base URL for SVG icons.
	;; Call this before load-icon macros are expanded if a custom base URL is needed.

chr15m / .bashrc

Last active June 26, 2025 20:29

My Direnv setup for Python & JS isolated development

	# You can put these in your .bashrc (or .profile or other shell setup) to setup direnv, pyenv, nvm.

	# pyenv setup hook (install it first)
	export PYENV_ROOT="$HOME/.pyenv"
	[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
	eval "$(pyenv init -)"
	eval "$(pyenv virtualenv-init -)"

	# nvm setup hook (install it first)
	export NVM_DIR="$HOME/.nvm"

chr15m / aider-convention-scraper

Last active September 23, 2025 11:49

Convert documentation URLs to Markdown "convention" files to be used by aider and other LLMs

	#!/bin/sh

	# Scrapes documentation from a URL and converts it to Markdown suitable for aider convention files
	# to provide context to the LLM.

	if [ $# -eq 0 ]; then
	echo "Usage: $(basename "$0") <URL> [URL...]"
	echo
	echo "Generate aider 'convention' Markdown context from documentation URLs."
	echo "suitable for providing LLM context about a project's conventions and style."

chr15m / testdemo.cljs

Last active January 27, 2025 05:15

ClojureScript nbb testing with playwright example

	(ns testdemo
	(:require
	["playwright$default" :as pw]
	[clojure.test :refer [deftest is use-fixtures async] :as t]
	[promesa.core :as p]))

	(def rig (atom nil))

	; set up playwright before running and tear it down afterwards
	(use-fixtures

chr15m / index.html

Last active December 3, 2024 21:55

Scittle ClojureScript with Preact instead of React

	<!DOCTYPE html>
	<html lang="en-us">
	<head>
	<title>Scittle Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="mobile-web-app-capable" content="yes">
	<meta name="apple-mobile-web-app-capable" content="yes">
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/concrete.min.css">
	<script src="https://cdn.jsdelivr.net/npm/scittle@latest/dist/scittle.min.js" type="application/javascript"></script>

chr15m / screenshots.cljs

Created June 8, 2024 21:34

nbb script to take a screenshot of localhost:8000 in the major browser rendering engines

	(ns screenshots
	(:require ["playwright" :as pw]
	[promesa.core :as p]))

	; NOTE: you'll need to npm install `nbb` and `playwright`

	(defn wait-for-network-idle [page]
	(p/do
	(.waitForLoadState page "networkidle")
	(p/delay 100))) ;; Add 100ms delay

chr15m / promises.cljs

Created December 17, 2023 08:11

Run a promise returning function over a sequence sequentially

	(ns promises
	{:clj-kondo/config '{:lint-as {promsea.core/let clojure.core/let
	promesa.core/doseq clojure.core/doseq
	promesa.core/loop clojure.core/loop
	promesa.core/recur clojure.core/recur}}}
	(:require [promesa.core :as p]))

	(def panel-choices [1 2 3 4 5])

	; simple test function returns a promise with doubled input

Chris McCormick chr15m