How to DIY a SuzyQ Cable

How a SuzyQ Cable Actually Works

Chromebooks with a Titan C / Cr50 / Ti50 security chip monitor the USB Type-C Configuration Channel (CC) lines for a specific resistor combination:

CC1 (pin A5): Pulled to VBUS via a 22 kΩ resistor.
CC2 (pin B5): Pulled to VBUS via a 56 kΩ resistor.

When the Chromebook detects these exact pull-up values upon insertion, it enters Debug Accessory Mode. The internal multiplexer redirects the security chip's USB lines to the USB-C Sideband Use (SBU) pins:

rootiest / PIV Text Storage

Last active 4 weeks ago guide piv security tech yubikey

A guide for writing secrets/notes to an unused PIV object to store them securely on a hardware device

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Storing Notes and Secrets in PIV Data Objects

This guide shows how to store small notes or secrets on the PIV application of a YubiKey or an RP2350-based key (such as RS-Key), protected by the PIV PIN.

Contents

How It Works
Storage Limits
Choosing a Data Object

rootiest / real-horizon.yaml

Last active 4 months ago

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1	state:
2	translated: ok
3	raw: ok
4	last_changed: "2026-06-20T00:23:50.371Z"
5	last_updated: "2026-06-20T00:25:20.473Z"
6	attributes:
7	latitude: 42.3504877
8	longitude: -72.5862169
9	profile:
10	- az: 0

rootiest / sunlight-bulb.md

Last active 4 months ago

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Dynamic sunlight smart bulb

Me:

Write an automation to dynamically change the bedroom lamp brightness and color temperature to match the current daylight/sun position. Also take into account weather/cloud cover/etc to account for all variables. All of the necessary entities for daylight/weather/cloud cover/sun position/etc should already be available. The ultimate goal is to have the light respond to/mimic the real-world sunlight as accurately as possible.

Additionally create a helper switch to enable/disable the automation so we can easily regain manual control any time we want.

Claude:

I'll build this properly. First, let me consult the best-practices guide and discover the available entities, since the automation should reference real entity IDs.

Now let me discover the relevant entities for sun position, weather, cloud cover, and illuminance.

rootiest / bash-script-hygeine.md

Last active 5 months ago

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Bash Scripting Basic Hygiene Checklist

Task	Recommendation	Why?
The Shebang	`#!/usr/bin/env bash`	Maximum portability across different Unix-like systems.
Error Handling	`set -euo pipefail`	Ensures the script stops at the first sign of trouble.
Quoting	`"$VARIABLE"`	Prevents word splitting and globbing (essential for paths).
Variable Style	`local_var="value"`	Lowercase prevents overwriting system-wide environment variables.
Boilerplate	`readonly CONSTANT`	Prevents accidental modification of fixed values.
Extensions	`.sh` or none	Helps with syntax highlighting and identifying file types.

rootiest / hello-world.cpp

Last active 5 months ago

0 0 1

1	#include <iostream>
2	#include <string>
3	using namespace std;
4
5	int main() {
6	string name;
7	cout << "\nWhat is your name (first and last)? ";
8	getline(cin, name);
9	cout << "\nHello, " << name << endl;
10	return 0;