casebeer

GICISKY ePaper Display BLE Protocol

Documentation based on the ATC1441 BLE E-Paper Uploader (source on Github) and testing with a 2.9" Black/White/Red epaper display.

BLE characteristics

• Primary Service
  • Short UUID 0xfef0
• Long UUID 0000fef0-0000-1000-8000-00805f9b34fb

casebeer

#!/bin/sh

#
# Check on "running" status of critical Docker containers
# and restart them if they are not running.
#
# This is necessary because after a hard host machine reboot, many Docker containers will
# will not start cleanly. Since Docker restart policies and healthchecks only take effect
# once a container has successully started up once, these failed containers will never
# start.

casebeer

#!/bin/bash

# via https://stackoverflow.com/a/53409127

dockerName="${1}"
hostCommandLine="${@:2}"

#nsenter -n -t "$(docker inspect --format {{.State.Pid}} "${dockerName}")" "${@:2}"
nsenter -n -t "$(docker inspect --format {{.State.Pid}} "${dockerName}")" ${hostCommandLine[@]}

casebeer

#!/bin/bash

# set path to directory holding docker-compose.yaml
#dockerComposeRoot=

if [ -z "$dockerComposeRoot" ]; then
  echo "ERROR: Set dockerComposeRoot before calling $0" >&2
  exit 1
fi

casebeer

#!/bin/bash

# https://www.eevblog.com/forum/thermal-imaging/infiray-and-their-p2-pro-discussion/200/
# https://superuser.com/questions/1009969/how-to-extract-a-frame-out-of-a-video-using-ffmpeg
# https://stackoverflow.com/questions/37960828/webcam-streaming-from-mac-using-ffmpeg
#
# Selected pixel format (yuv420p) is not supported by the input device.
#[avfoundation @ 0x7f961cd08b40] Supported pixel formats:
#[avfoundation @ 0x7f961cd08b40]   uyvy422
#[avfoundation @ 0x7f961cd08b40]   yuyv422

casebeer

#
# Reverse proxy config for Ruckus Unleashed controllers
#
# Requirements:
#
# - DNS entries for all unleashed<IPv4 last octet of controllers>.example.com
# - DNS entry for unleashed.example.com
# - (DNS entries to point to Nginx reverse proxy)
# - Wildcard TLS cert on reverse proxy (or SAN cert covering all above mentioned names)
#

casebeer

#!/bin/bash

cat <<EOF > req.template
[req]
#default_bits = 2048
distinguished_name = dn
prompt             = no
#req_extensions = req_ext

[dn]

casebeer

#!/bin/sh

# https://tqdev.com/2022-luks-with-usb-unlock
#
# Script to unlock Ubuntu LUKS encrypted volume from initramfs during boot using
# a keyfile stored on a USB thumb drive with fallback to manual passphrase entry.
#
# Runs in Busybox shell environment in initramfs
# After updates to this script or crypttab, update initramfs:
#

casebeer

'''
Script for converting GetPocket.com exported HTML to CSV

Export data via https://getpocket.com/export
'''
import csv
import sys
import xml.etree.ElementTree as ET

def main():

casebeer

Random normal variables in Home Assistant/Jinja

Via Iwrin-Hall/uniform sum distribution.

μ = n / 2, σ = sqrt(n / 12)

where n = # of summed uniform U(0, 1) random variables

Scale and shift Irwin-Hall to provide μ and σ as needed.