James Churchill pelrun

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

LastPass Pwned Passwords checker

This is a script for checking if any of the passwords you have stored in LastPass have been exposed through previous data breaches.

To use the script you need to have Python 3 installed and you need a CSV export of your LastPass vault. The export can be generated from the LastPass CLI with:

lpass export > lastpass.csv

or can be extracted with the browser plugin by going to the LastPass icon → More Options → Advanced → Export → LastPass CSV File (note that I did have problems getting this to work).

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

	import numpy as np
	import json

	# load the project JSON to get the depth scale
	with open('/path/to/project/data/subfolder/property.rvproj','rt') as f:
	project = json.load(f)
	depth_scale = project['scan_param']['depth_scale']
	print(depth_scale)

	# load projection matrix from 2D to 3D

	# Initialise a block of memory by splitting the block of memory of interest, set
	# them to initialised and set bytes to them
	#@author Henry Fung
	#@category CustomScript

	#TODO Add User Code Here
	def mySplit(start, end, value=""):
	mem = currentProgram.getMemory()
	aStart = currentAddress.getAddress(start)
	aEnd = currentAddress.getAddress(hex(int(end, base=16) + 1)[2:])

	#!/usr/bin/env python
	#
	# convert SDCC .rel files to 32-bit ELF relocatable
	#
	# resulting file structure:
	#
	# ------------------------
	# ELF header
	# ------------------------
	# .text section

	--
	-- SuperFunkyChat (https://github.com/tyranid/ExampleChatApplication) by James Forshaw - Wireshark UDP dissector
	--
	-- On Fedora one has to install wireshark-devel first:
	-- $ sudo dnf install wireshark-devel -y
	--
	-- Then it can be used as following:
	-- $ wireshark -X lua_script:udp-superfunkychat-dissector.lua -r capture.pcap -Y "udp.port == 12345"
	--
	-- Wrriten by: Mariusz B. / mgeeky, '18

	/*
	* SimpleAdHocTracker.cpp
	*
	* Created on: Mar 15, 2015
	* Author: roy_shilkrot
	*
	* The MIT License (MIT)
	*
	* Copyright (c) 2015 Roy Shilkrot
	*

	#!/bin/sh

	# Called by "git push" after it has checked the remote status,
	# but before anything has been pushed.
	#
	# If this script exits with a non-zero status nothing will be pushed.
	#
	# Steps to install, from the root directory of your repo...
	# 1. Copy the file into your repo at `.git/hooks/pre-push`
	# 2. Set executable permissions, run `chmod +x .git/hooks/pre-push`

	#!/bin/sh
	# Convert a raw binary image into an ELF file suitable for loading into a disassembler

	cat > raw$$.ld <<EOF
	SECTIONS
	{
	EOF

	echo " . = $3;" >> raw$$.ld