Sam Thorogood samthor

Major Node Changes

This now lives on Whistlr.

This is notes for anyone who is interacting with (in Australia at least) Clipsal-branded smart switches that operate over BLE. (They also come with a ZigBee certification document, but it seems like it was never enabled.)

They have a couple of interesting UUIDs (these are here for y'all searching for them):

Control service, 720a9080-9c7d-11e5-a7e3-0002a5d5c51b
- State characteristic (i.e., switch on/off), 720a9081-9c7d-11e5-a7e3-0002a5d5c51b
- Level characteristic (i.e., brightness), 720a9082-9c7d-11e5-a7e3-0002a5d5c51b
Command service, 720a7080-9c7d-11e5-a7e3-0002a5d5c51b
Request characteristic, 720a7081-9c7d-11e5-a7e3-0002a5d5c51b

	<!--
	Copyright 2020 Google LLC.

	Licensed under the Apache License, Version 2.0 (the "License"); you may not
	use this file except in compliance with the License. You may obtain a copy of
	the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software

	/**
	* @param {!Element=}
	* @return {!Array<!Element>} containing focused element, deepest first
	*/
	function getActive(t = document.activeElement \|\| document.body) {
	if (t.activeElement) {
	t = t.activeElement;
	}
	if (t.shadowRoot) {
	return [...getActive(t.shadowRoot), t];

	// If the device is already on a network and you need to change it, you can load:
	// http://<device_ip>/common/get_wifi_setting
	// It'll give you a result like... ret=OK,ssid=OldSSIDHere,security=mixed,key=%6e%65%76%65%72%67%6f%6e%6e%61%67%69%76%65%79%6f%75%75%70

	// To update the same data, open that page and in the console, run this (modify as needed):

	const ssid = 'NewSSIDHere';
	const key = 'nevergonnagiveyouup';

	const encoded = Array.from(key).map((c) => '%' + c.charCodeAt(0).toString(16).padStart(2, '0')).join('');

	// This is part of the blog post here: https://whistlr.info/2022/abortcontroller-is-your-friend/
	// ...and can be used to detect/polyfill the `signal` argument to addEventListener.
	//
	// Note that at writing, 86%+ of active browsers already support it:
	// https://caniuse.com/mdn-api_eventtarget_addeventlistener_options_parameter_options_signal_parameter
	// ...but that 92% of browsers support `AbortController` and signal.
	//
	// So there's 6% of total browsers which will fail silently when adding the `signal` argument.
	// Eyeballing it, this is mostly Safari 11-15 and Chrome 66-90. These snippets can help with those targets.
	//

	// This is now a library:
	// ... source on GitHub: https://github.com/samthor/viz-observer
	// ... package on npm: https://www.npmjs.com/package/viz-observer