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section	van
category	electrical
title	24V Schematic
author	Stello
date	2020-10-26
tags	24V design concept electrical van schematic

Rough 24V system

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section	van
category	envelope
title	Insulation
author	Stello
data	2020-11-5
tags	insulation design concept

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Purpose

The purpose of this gist is to document the setup of VSCode + VPS to allow remote development in containers.

Motivation

The reason for developing in this way is to assuage my fear of purchasing a new Mac with only 16GB of RAM that will replace my several-year-old Mac that has only 16GB of RAM. The new fancy RAM is supposed to be enough except for people that run a lot of Docker containers on Macs which uses a virtual machine, which ties up a fixed amount of RAM. With this method, the Mac runs no containers, thus no virtual machine, and thus no memory issue.

Steps

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Notes On Geotagging

Our camera doesn't have a GPS. If we have a GPX track, we can tag all photos in a directory as follows:

1. Ensure the GPX zulu + offset time matches the "Date/Time Original" field of the photos to be tagged.

exiftool -datetimeoriginal photo_to_be_tagged.jpg

2. Copy the GPX file into the directory with the photos to be tagged.

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Purpose

The purpose of this gist is to document the setup of a VNC server to allow remote desktop access on my development VPS.

Motivation

There are some chome extensions (e.g. webscrapers) that I would like to run from a VPS. This way the connection quality of my present location isn't a factor.

Steps

I'm using this guide.

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Purpose

Installing windows 10 via UTM on apple silicon.

Motivation

Some of our equipment can't be fully configured without windows (e.g., victron, wakespeed). In the past we used virtualbox but they no longer, and will probably never, support apple silicon.

Steps

This page has the instructions we followed.

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Fixing the dates on GoPro videos

This will update all MP4 files in a directory with a date in the format "YYYY:MM:DD HH:MM:SS". It was taken from an answer to this question.

exiftool -FileCreateDate="2023:02:27 17:00:00" -FileModifyDate="2023:02:27 17:00:00" -Quicktime:CreateDate="2023:02:27 17:00:00" -api QuickTimeUTC *.MP4

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These are Journal Queries displayed at the bottom of the current Journal Page

They are placed in this section of config.edn

:default-queries
 {:journals
 "INSERT HERE"
 }

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These are the queries that I add to each new Project page

The easiest way to do this is to capture them in a single template that you can run for each new project.

#+BEGIN_QUERY
{:title "WAITING"
 :query [:find (pull ?b [*])
       :in $ ?current-page
       :where

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for i in *.m4a; do ffmpeg -i "$i" -c:a aac -b:a 256k "${i%.*}.aac"; done

To determine if alac or acc:

for i in *.m4a; do t=$(ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "$i"); echo $t $i ; done

In a mixed directory, to only convert alac to aac:

for i in *.m4a; do t=$(ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "$i"); if [ $t = 'alac' ]; then ffmpeg -i "$i" -c:a aac -b:a 256k "${i%.*}.aac" ; fi; done;