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VT100 escape codes

This document describes how to control a VT100 terminal. The entries are of the form "name, description, escape code".

The name isn't important, and the description is just to help you find what you're looking for. What you have to do is send the "escape code" to the screen. These codes are often several characters long, but they all begin with ^[. This isn't the two characters ^ and [, but rather a representation of the ASCII code ESC (which is why these are called escape codes).

Building PyQt5 to support Python2 based QtDesigner Plugins

As far as I can tell, the reason Qt5 Designer does not load custom PyQt5 widgets is due to the 'stock' shared library libpyqt5.so (which comes with PyQt5) not being built for the correct combination of the Python and Qt versions. It seems the only way to get around this is to build PyQt5 from source so we will have a libpyqt5.so that is correct and will be able to load the custom widgets.

	GIMP Palette
	Name: Agon Light Mode 0, 2 colors
	Columns: 0
	#
	0 0 0 Color 0
	255 255 255 Color 1

	import cv2
	import numpy as np
	import math

	WIDTH=32
	HEIGHT=24

	def frame2array(frame):
	img = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
	img = cv2.resize(img, (WIDTH,HEIGHT))

	# Parse Kicad schematic netlist into a LinuxCNC HAL configuration file
	#
	# Ed Nisley - KE4ZNU
	# 2021-03

	import argparse
	from pathlib import Path

	from lxml import etree

	#!/usr/bin/env bash
	# Get a random music file from modarchive.org and play it.
	# Uses VLC. Many other players could work too.

	# Check for needed programs. Exit if they are not found.
	#if ! which xmp > /dev/null; then echo "xmp not installed. Try: apt install xmp"; exit 1; fi
	if ! which vlc > /dev/null; then echo "VLC not installed. Try: apt install vlc"; exit 1; fi
	if ! which curl > /dev/null; then echo "curl not installed. Try: apt install curl"; exit 1; fi

	# Check if the user wants a specific module

	#!/usr/bin/env bash
	# Plays a random MOD file from https://modarchive.org
	# Depends on XMP (http://xmp.sourceforge.net/)
	# https://gist.github.com/orhun/eda9701e357b625c2bada19563872715

	rand=$(shuf -i 1-189573 -n 1)
	tmp=$(mktemp /tmp/${rand}.XXXXXXXX.mod)
	curl https://modarchive.org/jsplayer.php?moduleid=${rand} > ${tmp}
	xmp ${tmp}
	rm ${tmp}

	# The file must be placed on /usr/lib/systemd/user/mycroft.service
	# and need to be run as the user who owns the file permissions
	# with the command systemctl --user start\|enable mycroft.service
	[Unit]
	Description=Mycroft main service
	After=network.target local-fs.target remote-fs.target

	[Service]
	Type=forking
	RemainAfterExit=no

	# Applying a sort feature in a QTableView

	import sys
	from PyQt5.QtCore import (Qt,
	QModelIndex,
	QAbstractTableModel,
	QSortFilterProxyModel)
	from PyQt5.QtWidgets import (QApplication,
	QTableView)

	#!/usr/bin/env python
	""" Short description of this Python module.

	Longer description of this module.

	This program is free software: you can redistribute it and/or modify it under
	the terms of the GNU General Public License as published by the Free Software
	Foundation, either version 3 of the License, or (at your option) any later
	version.

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VT100 escape codes

Building PyQt5 to support Python2 based QtDesigner Plugins

Install Python dev tools