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Harrison Liddiard liddiard

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@liddiard
liddiard / Brewfile
Last active April 26, 2026 02:04
Homebrew-installed CLI tools and apps (casks) from personal laptop. Generated with `brew bundle dump --describe`, and suitable for installation on a new laptop with `brew bundle install`.
tap "anomalyco/tap"
tap "arthur-ficial/tap"
tap "d12frosted/emacs-plus"
tap "domt4/autoupdate"
tap "jurplel/tap"
tap "mczachurski/wallpapper"
# Vector graphics library with cross-device output support
brew "cairo"
# LCS based diff highlighting tool to ease code review from your terminal
brew "diffr"
@liddiard
liddiard / shelly_door_unlock.js
Last active August 8, 2025 19:56
Script for the Shelly Plus Uni board that triggers a door unlock when wired to an apartment unit call box.
// Simultaneously close for a few seconds, then open multiple relays to simulate an "open door" button press
const relays = [0, 1];
for (const relayID of relays) {
// https://shelly-api-docs.shelly.cloud/gen2/ComponentsAndServices/Switch/#switchset
Shelly.call("Switch.Set", {
id: relayID,
on: true,
toggle_after: 5, // turn off after 5 sec
@liddiard
liddiard / js_await_sleep.js
Created May 12, 2023 23:02
One-liner sleep function to use in JavaScript with async/await
const sleep = s => new Promise(r => setTimeout(r, s*1000));
@liddiard
liddiard / game_master.html
Created October 27, 2022 22:56
Displays the person in charge of hosting a game for us to play with fun animations
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css"
/>
<style>
body {
@liddiard
liddiard / ssh_port_scan.sh
Last active November 29, 2020 19:52
Scan local network for open port 22 (SSH) in the range 192.168.0.1 – 192.168.0.64
nmap --open -v -p 22 192.168.0.1-64 | grep Discovered
@liddiard
liddiard / launch.json
Created September 14, 2020 00:53
Visual Studio Code launch.json config
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "node",
"request": "launch",
"name": "Mocha All",
@liddiard
liddiard / timezone_time_share.html
Last active September 23, 2020 21:48
Share a date and time that will display in the whatever the viewer's time zone is: https://tz.harrisonliddiard.com
<!doctype html>
<html>
<head>
<meta charset=utf-8>
<meta name="viewport" content="width=device-width,initial-scale=1"/>
<title>Display times in the viewer’s local timezone</title>
<style>
:root {
--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
@liddiard
liddiard / promisify.js
Last active April 19, 2020 00:17
Simple implementation of taking a callback-style function that accepts an `(err, result)` callback as its last argument and return that function promisified.
// dummy callback func; randomly calls success or failure callback after 1 sec
const myFunc = (a, b, callback) => {
setTimeout(() =>
Math.random() > 0.5 ? callback(null, 'success!') : callback('fail :('),
1000)
}
// test the dummy func
myFunc('foo', 'bar', (err, res) => {
if (err) {
@liddiard
liddiard / extractSubtitles.js
Created March 20, 2020 00:58
Extract subtitles from a YouTube video API response (https://www.youtube.com/api/timedtext)
const subtitles = {} // replace with subtitles content
subtitles.events.map(ev => ev.segs[0].utf8.replace('\n', ' ')).join(' ')
@liddiard
liddiard / instagram_text_layout.html
Created March 7, 2020 03:40
Layout for longform text on Instagram: https://drive.google.com/file/d/15p5ZZMRQt-DhEa2JSqv39RO70qcAUZLW/view?usp=sharing
<!doctype html>
<html lang="en"> <!-- necessary to define language here to get English hyphenation -->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
:root {
--article-padding: 1.5em;
}
html {