jfrobbins

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# --- MIT License ---
#
# Copyright (c) 2025 [Jon Robbins]
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights

jfrobbins

# Filename: pdf_to_png.py
# Summary: Converts specified or all PDF pages to PNG images on macOS, extracting the first non-empty text line as the title for filenames.
#          Filenames are structured as <file-name>_pg-<page-number>_<slide-title>.png for better sorting by page number.
#          Page numbers are padded with leading zeros based on the total number of pages.
# Usage:
#   - Convert all pages: python pdf_to_png.py input.pdf
#   - Convert a range (e.g., pages 3-7): python pdf_to_png.py input.pdf --pages 3-7
#   - Convert specific pages (e.g., pages 1,3,5): python pdf_to_png.py input.pdf --pages 1,3,5
# Dependencies:
#   - pdf2image: Install via `pip install pdf2image`

jfrobbins

GPG Setup, Key Management, and File Encryption Guide (Using Modern ECC Encryption)

This guide covers installing GPG on various operating systems (Windows, macOS, and Linux), generating a new key pair using modern Elliptic Curve Cryptography (ECC), exporting your public key, encrypting and decrypting files using users’ public keys, and encryption best practices.

Note: Newer versions of GnuPG (2.2 and later) support ECC keys. It is recommended to use ECC (such as Curve25519 for encryption and EdDSA/Ed25519 for signing) instead of RSA for improved security and performance.

---

1. Installing GPG

jfrobbins

AI Agents Under $25/Month: Comparison and Recommendations

Code Generation & Documentation

Code Generation

All these AI assistants can generate code, but they differ in approach and integration.

• ChatGPT Plus (GPT-4):
  • Excels in generating well-documented code with detailed explanations.
• No default IDE integration, but plugins exist.

jfrobbins

###################################
# these are the variables to use for the de-embedding.
# the system EVM floor that you want to deEmbed is EVM_systemFloor(dB)
# EVM_minSystemFloor(dB) is the floor to add back in, to keep things reasonable
#
# Update the EVM system floor values below in the dictionary.
#
# This script assumes that your data is already loaded into a Pandas Dataframe `df`
###################################
global evm_db_to_percent, evm_deembed_pct, evm_embed_pct, evm_percent_to_db

jfrobbins

import numpy as np


def evm_percent_to_db(evm_percent):
    """
    Convert EVM from percentage to dB.

    Parameters:
        evm_percent (float): EVM in percent.

jfrobbins

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
transcode_m4a_to_ogv_vorbis.py

A script to batch transcode .m4a files to .ogv with Vorbis audio using FFmpeg, 
allowing for both CBR and VBR settings for file size optimization.

Based on:
- https://gist.github.com/jfrobbins/0f8ef94b1a7ff780f74a320a2fd9530c

jfrobbins

• Source: stackoverflow

Referencing both manuals for the Snowball Blue Microphone (and this manual) which provide similar information with different descriptions of the settings, this switch controls the pickup pattern,

Position 1,

• Setting: Cardioid (capsule)
• Applications: speech, vocals, podcasting
• Picks up sound from the front, ideal for podcasting, game streaming or recording vocals and instruments

jfrobbins

"""
The goal with this script is to predictably encode and decode 7 digits <> 4 digits using base-62.
e.g.
    D052077 <-> 6JJX

some example codes:
D159098
D054080
B052077
"""

jfrobbins

Classic Deviled Eggs

I started with this recipe from Southern Living. With our chickens laying a plethora of eggs, I've been making deviled eggs a lot lately for functions, tweaking the recipe to my liking.

Ingredients:

• 12 large eggs
• 4 to 6 tablespoons mayonnaise
• 4 teaspoons spicy brown mustard