Alan Han - Fab Academy 2022

Andpromistomorrow

2022-02-19T00:00:00+00:00

electronics

the electronics arc goes something like this:

efab
ecad
embed

ecad and project management

however, I won’t get my primary efab tools until Sunday (roland). I started off this batch of assignments by going straight to ecad, since I’m already “fluent” in Altium.

I’ve noticed a bad feedback loop where I procrastinate on documentation until right before the assignment is due; I know, it’s not great.

I figured out a couple of things while trying to diagnose my problem:

I’m letting too many external expectations drive my goal setting
- eg, I see a lot of cool ideas in the fab network, and I’m letting doing something “cool” override doing something I want to do
I’m spiraling out way faster than I should be, skipping closer spirals to “save time”
- spoiler: it doesn’t save time
hello-worlds are for everyone, don’t skip them
being original starts from being unoriginal
documentation takes a very long time, even when I have all the content
- like, multiple hours of work between screenshots, compression, formatting, etc.

ecad hello world

I talked to Dan about what we have in stock at the fablab, and determined that he has the stuff for an attiny44a.

I spent some time designing a hello-world board for the attiny44a from scratch, adding an led and switch, plus passives. Supposedly, ordering from oshpark was extra credit, so I did that.

I had additional reasons to order a PCB instead of just milling one:

I was curious about the practical speed difference between ordering from eg oshpark vs fabbing a PCB using the cnc/vinylcutter
I also wanted a concrete reason to complete a full spiral for ecad design quickly, and the pressure to order and receive sometime next week helped expedite the process

this is especially critical to me because I have a love/hate relationship with finalizing electronics designs:

there is a large enough time cost for pcb turnaround (w/o making shipping expensive) that I’d rather not have to respin a board
if I discover a bug after I populate the board, that makes me sad… components are expensive :’(
if life is busy/work is busy, alotting enough time to send out a design can seem insurmountable due to the bug squashing aspect

effectively, pcb fab houses don’t enable iteration for me, which is bad for getting things done.

this situation is an interesting combo:

needing to order a PCB creates the pressure to deliver sooner
mistakes are less costly because I don’t have to get the first iteration right, since I need to use the CNC mill to prototype 1-sided PCBs anyways

these two details make it so that I finish my first spiral asap.

in practice, this combo has been working out very effectively so far. I still need to go through efab, so tbd.

3d

I have some sla benchmarks already printed for my elegoo mars 2p, but I actually ran out of resin for that print, and one of the models didn’t complete… I haven’t used my resin setup in a bit, so getting it up and running may be non-trivial. In the meantime, to complete the assignment, I used my ender 3 to print a full set of benchmarks.

I was in the middle of my photoshoot before I had to leave, so pictures are not done yet.

electronic origami/kirigami

I spent some time thinking about paper electronics and related, for cba research. Still testing waters to see how much I should work on for class vs for cba.

documentation

for week3 assignment (cncSmall), I worked on compression scripts a bit, but they were piecemeal and required finagling to get working. Given that I’m attempting to document 3 assignments in the span of a weekend, I think I’ll want to get my feedback loops figured out better.

so, plan:

outline posts (week3, 4, 5)
fix compression/cropping scripts to be easier to use
vim indent fix
centralized todo

I’ve been struggling a bit with juggling everything on my plate right now, but after some thought I found the following quote:

“A life without failure is not a life well lived”.

I may fail at some of my current tasks, but I will still succeed. I think I’m on the right trajectory, even if it sometimes doesn’t feel like it.

Msi0

2022-02-06T00:00:00+00:00

msi tour

2d laser design file

to fulfill both the 2d design file requirement from CAD week and laser cutting requirement from computer controlled cutting week: -yanked from Dan’s student page
talked about kerf in design file
- modifying design file to demonstrate knowing how to do things in inkscape

inkscape

epilog

kerf
- https://sendcutsend.com/what-is-kerf-in-laser-cutting/
- the stuff that gets burned away during laser cutting
apparently the epilog has two separate driving settings: cutting and engraving
- shifting between the two settings is determined by line/artwork thickness, which may explain the resulting kerf of cut pieces
dan walked me through his svg file exploring the laser kerf. my plan is to modify the file to clarify what he was trying to communicate:
- change from inches to mm
- minimize stroke style width
- change display mode from normal to outline, so I can see super-thin stroke style width
- reassign different sizes of squares

inkscape crashed

while attempting to open the stroke/width settings, I managed to crash inkscape. moving on.

for my file, I will keep 5 boxes, and they will be deviations of 0.010 mm increments from target of 10mm x 10mm (stroke width being 0.010mm, factored into total dimensions of object)
- 9.980 mm (-0.020 mm)
- 9.990 mm (-0.010 mm)
- 10.000 mm (-0.000 mm)
- 10.010 mm (+0.010 mm)
- 10.020 mm (+0.020 mm)

Coffeeshop

2022-02-02T00:00:00+00:00

tools

gantt chart

looking for a gantt-esque day planner tool:

hour-resolution
multiple views
minimal buttons to press to create tasks
investigated gantt chart tools; concluded that some of the tools suggested seem outdated
online tools
- https://www.onlinegantt.com/#/gantt
- resolution appears to be at the day level

scripts

spent some of the past few days looking into creating scripts for easier compression and deploy of media for class
- moved scripts from fabacademy repo to home directory for user; controlled by chezmoi now
- pushed to my dotfiles repo
made modifications to bashrc and the scripts to make them work as part of path, etc.
- had troubles finding a single command to rename files in chezmoi. currently need to
  - forget file
  - rename file
  - add file
- annoying, but not inoperable. moving on
- will test w/ 3d media to see if my changes worked
getting photos from phone to computer is annoying, especially if I’m missing my usb-c cable
- ftp server requires some updated firewall (ufw) rules, apparently
  - https://linuxconfig.org/how-to-setup-and-use-ftp-server-in-ubuntu-linux
- coffee places generally have fast internet
- google photos/drive are a bit annoying about uploading and maintaining file structure
reorganized downloaded files from drive ##

context

Soopr

2021-03-04T00:00:00+00:00

Soopr is the easiest way for you to add share & reaction buttons to your blog and website, integrate an URL shortener and simple to understand analytics service. Soopr lets you manage all of these using a powerful dashboard.

Moonwalk uses Soopr for share and like buttons and it is already integrated. By default, Moonwalk shows circular Twitter, Facebook and Copy buttons in base size. To add like button, please signup for free on Soopr

Once you have signed up on Soopr, get a publish token for your website and edit _config.yml file and add it under soopr key and restart the server.

soopr:
  publish-token: "ADD_YOUR_PUBLISH_TOKEN_HERE" 

Check out the Soopr Website for more info on how to get the most out of Soopr.

Code

2021-01-08T00:00:00+00:00

Language Test

Python

import microrequests

mr = microrequests.init()
# mr is requests' session object and you can use it in similar manner
res = mr.get("http://httpbin.org/get")
print(res.text) 

Ruby

require 'gmail'
require 'time'
require 'yaml'
require 'erb'

if ARGV.length != 2
  puts "Syntax: #{__FILE__} gmail-username gmail-password"
  exit
end

config = YAML.load_file("#{File.dirname(__FILE__)}/config.yaml")
body = ERB.new(config['body'])

gmail = Gmail.connect(ARGV[0], ARGV[1])

# variable 'name' is important given it is used in body as well
for name, email_id in config['to'] do
  puts "sending to #{email_id}"
  email = gmail.compose do
    to email_id
    from config['from']
    subject config['subject']
    body body.result(binding)
    end
  email.deliver!
end

gmail.logout

Javascript

const path = require('path');
const { merge } = require('webpack-merge');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'development',
  devtool: 'inline-source-map',
  devServer: {
    writeToDisk: true,
    contentBase: path.join(__dirname, 'dist'),
    publicPath: path.join(__dirname, 'dist'),
    compress: true,
    port: 8000,
  },
});

Elixir

defmodule MyAppWeb.BearerAuth do

  import Plug.Conn
  alias MyApp.Account

  def init(options) do
    options
  end

  def call(conn, _options) do
    case get_bearer_auth_token(conn) do
      nil ->
        conn |> unauthorized()
      :error ->
        conn |> unauthorized()
      auth_token ->
        account =
          Account.get_from_token(auth_token)
        if account do
          assign(conn, :current_account, account)
        else
          conn |> unauthorized()
        end
    end
  end

  defp get_bearer_auth_token(conn) do
    with ["Bearer " <> auth_token] <- get_req_header(conn, "authorization") do
      auth_token
    else
      _ -> :error
    end
  end

  defp unauthorized(conn) do
    conn
    |> resp(401, "Unauthorized")
    |> halt()
  end
end

CSS

.highlight, pre code, blockquote {
  border-radius: 0.5em;
}
blockquote {
  background-color: var(--bg-secondary);
  border: 1px var(--border) solid;
}

Post Example With Headings And Toc

2020-07-09T00:00:00+00:00

Table of contents
The start
The middle
The end

Mauris viverra dictum ultricies. Vestibulum quis ipsum euismod, facilisis metus sed, varius ipsum. Donec scelerisque lacus libero, eu dignissim sem venenatis at. Nunc a egestas tortor, sed feugiat leo. Vestibulum porta tincidunt tellus, vitae ornare tortor. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Sed nunc neque, tempor in iaculis non, faucibus et metus. Etiam id nisl ut lorem gravida euismod.

The start

Fusce non velit cursus ligula mattis convallis vel at metus. Sed pharetra tellus massa, non elementum eros vulputate non. Suspendisse potenti. Quisque arcu felis, laoreet vel accumsan sit amet, fermentum at nunc. Sed massa quam, auctor in eros quis, porttitor tincidunt orci. Nulla convallis id sapien ornare viverra. Cras nec est lacinia ligula porta tincidunt. Nam a est eget ligula pellentesque posuere. Maecenas quis enim ac risus accumsan scelerisque. Aliquam vitae libero sapien. Etiam convallis, metus nec suscipit condimentum, quam massa congue velit, sit amet sollicitudin nisi tortor a lectus. Cras a arcu enim. Suspendisse hendrerit euismod est ac gravida. Donec vitae elit tristique, suscipit eros at, aliquam augue. In ac faucibus dui. Sed tempor lacus tristique elit sagittis, vitae tempor massa convallis.

The middle

Proin quis velit et eros auctor laoreet. Aenean eget nibh odio. Suspendisse mollis enim pretium, fermentum urna vitae, egestas purus. Donec convallis tincidunt purus, scelerisque fermentum eros sagittis vel. Aliquam ac aliquet risus, tempus iaculis est. Fusce molestie mauris non interdum hendrerit. Curabitur ullamcorper, eros vitae interdum volutpat, lacus magna lacinia turpis, at accumsan dui tortor vel lectus. Aenean risus massa, semper non lectus rutrum, facilisis imperdiet mi. Praesent sed quam quis purus auctor ornare et sed augue. Vestibulum non quam quis ligula luctus placerat sed sit amet erat. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia curae; Fusce auctor, sem eu volutpat dignissim, turpis nibh malesuada arcu, in consequat elit mauris quis sem. Nam tristique sit amet enim vel accumsan. Sed id nibh commodo, dictum sem id, semper quam.

The end

Donec ex lectus, tempus non lacinia quis, pretium non ipsum. Praesent est nunc, rutrum vel tellus eu, tristique laoreet purus. In rutrum orci sit amet ex ornare, sit amet finibus lacus laoreet. Etiam ac facilisis purus, eget porttitor odio. Suspendisse tempus dolor nec risus sodales posuere. Proin dui dui, mollis a consectetur molestie, lobortis vitae tellus. Vivamus at purus sed urna sollicitudin mattis. Mauris lacinia libero in lobortis pulvinar. Nullam sit amet condimentum justo. Donec orci justo, pharetra ut dolor non, interdum finibus orci. Proin vitae ante a dui sodales commodo ac id elit. Nunc vel accumsan nunc, sit amet congue nunc. Aliquam in lacinia velit. Integer lobortis luctus eros, in fermentum metus aliquet a. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos.

Language Tests

2020-07-08T00:00:00+00:00

Note: Text is from moving, which is another good Jekyll theme.

1. 日本語テスト

This is a Japanese test post to show you how japanese is displayed.

私は昨日ついにその助力家というのの上よりするたなけれ。最も今をお話団はちょうどこの前後なかろでくらいに困りがいるたをは帰着考えたなかって、そうにもするでうたらない。がたを知っないはずも同時に九月をいよいよたありた。

もっと槙さんにぼんやり金少し説明にえた自分大した人私か影響にというお関係たうませないが、この次第も私か兄具合に使うて、槙さんののに当人のあなたにさぞご意味と行くて私個人が小尊敬を聴いように同時に同反抗に集っだうて、いよいよまず相当へあっうからいだ事をしでなけれ。

それでそれでもご時日をしはずはたったいやと突き抜けるますて、その元がは行ったてという獄を尽すていけですた。

この中道具の日その学校はあなたごろがすまなりかとネルソンさんの考えるですん、辺の事実ないというご盲従ありたですと、爺さんのためが薬缶が結果までの箸の当時してならて、多少の十月にためからそういう上からとにかくしましないと触れべきものたで、ないうですと多少お人達したのでたた。

From すぐ使えるダミーテキスト - 日本語 Lorem ipsum.

2. 繁体中文测试

This is a chinese test post to show you how chinese is displayed.

善我王上魚、產生資西員合兒臉趣論。畫衣生這著爸毛親可時，安程幾？合學作。觀經而作建。都非子作這！法如言子你關！手師也。

以也座論頭室業放。要車時地變此親不老高小是統習直麼調未，行年香一？

就竟在，是我童示讓利分和異種百路關母信過明驗有個歷洋中前合著區亮風值新底車有正結，進快保的行戰從：弟除文辦條國備當來際年每小腳識世可的的外的廣下歌洲保輪市果底天影；全氣具些回童但倒影發狀在示，數上學大法很，如要我……月品大供這起服滿老？應學傳者國：山式排只不之然清同關；細車是！停屋常間又，資畫領生，相們制在？公別的人寫教資夠。資再我我！只臉夫藝量不路政吃息緊回力之；兒足灣電空時局我怎初安。意今一子區首者微陸現際安除發連由子由而走學體區園我車當會，經時取頭，嚴了新科同？很夫營動通打，出和導一樂，查旅他。坐是收外子發物北看蘭戰坐車身做可來。道就學務。

國新故。

工步他始能詩的，裝進分星海演意學值例道……於財型目古香亮自和這乎？化經溫詩。只賽嚴大一主價世哥受的沒有中年即病行金拉麼河。主小路了種就小為廣不？

From 亂數假文產生器 - Chinese Lorem Ipsum.

3. 简体中文测试

效育声去本义然空，各值太法心想，场强实地。题铁习点儿表管少间千，只何政亲织文意部，千影画派证男须。手反取长风治增非等直难群，连取及天他己事头级，影数弦适把气快目人。专议以省通引而千个，格则口段度样水热马，地教少务改磨。包思外心半院应她算斯，市外会快记路又火学，劳如肃它准众丧边。

团算部住县单总边素格军所，合音府教看和广光采率位转，位用品根确针百。证其标元角工方海接交他，论象切万世认一响义，治然身本风弦带题。向我次路持加北，她不反心。说总元军例市决，现始即算证养，规走还壳。

因林可相儿应满军，热影省条律因资再，整肃赤心将届。局广写两量备验还，南教事争工民的，备进研上布。素身电活非直，速这区交示从，百层达。资量那毛什京身，白这快。半打容三手开常价或，手严量般象式效，名可重芽门适。来设什一我么，光界美么或，住身式准。造酸改表委验众办地百养，商物战众本列听度名院，制压录丽快与千机内。住需当四议决得命南然照按民置，当住命形金决否矿单外。气象理离开新集增际，三划方工义很年关，拉许准孝口。构片出干计由备美打养，持育总指承入无己。

From 假文生成器， lorem ipsum Chinese

Very Very Very Long Title And Very Very Very Short Content

2020-07-08T00:00:00+00:00

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque vel lacinia neque. Praesent nulla quam, ullamcorper in sollicitudin ac, molestie sed justo. Cras aliquam, sapien id consectetur accumsan, augue magna faucibus ex, ut ultricies turpis tortor vel ante. In at rutrum tellus. Nullam vestibulum metus eu purus malesuada, volutpat mattis leo facilisis.

Overview Post

2020-07-07T00:00:00+00:00

Lorem ipsum¹ dolor sit amet, consectetur adipiscing elit. Pellentesque vel lacinia neque. Praesent nulla quam, ullamcorper in sollicitudin ac, molestie sed justo. Cras aliquam, sapien id consectetur accumsan, augue magna faucibus ex, ut ultricies turpis tortor vel ante. In at rutrum tellus.

Sample heading 1

Sample heading 2

Sample heading 3

Sample heading 4

Sample heading 5

Sample heading 6

Mauris viverra dictum ultricies. Vestibulum quis ipsum euismod, facilisis metus sed, varius ipsum. Donec scelerisque lacus libero, eu dignissim sem venenatis at. Etiam id nisl ut lorem gravida euismod.

Lists

Unordered:

Fusce non velit cursus ligula mattis convallis vel at metus².
Sed pharetra tellus massa, non elementum eros vulputate non.
Suspendisse potenti.

Ordered:

Quisque arcu felis, laoreet vel accumsan sit amet, fermentum at nunc.
Sed massa quam, auctor in eros quis, porttitor tincidunt orci.
Nulla convallis id sapien ornare viverra.
Nam a est eget ligula pellentesque posuere.

Blockquote

The following is a blockquote:

Suspendisse tempus dolor nec risus sodales posuere. Proin dui dui, mollis a consectetur molestie, lobortis vitae tellus.

Thematic breaks (<hr>)

Mauris viverra dictum ultricies³. Vestibulum quis ipsum euismod, facilisis metus sed, varius ipsum. Donec scelerisque lacus libero, eu dignissim sem venenatis at. Etiam id nisl ut lorem gravida euismod. You can put some text inside the horizontal rule like so.

Code

Now some code:

const ultimateTruth = 'follow middlepath';
console.log(ultimateTruth);

And here is some inline code!

Tables

Now a table:

Tables	Are	Cool
col 3 is	right-aligned	$1600
col 2 is	centered	$12
zebra stripes	are neat	$1

Images

This is an image⁴

this is a footnote. You should reach here if you click on the corresponding superscript number. ↩
hey there, don’t forget to read all the footnotes! ↩
this is another footnote. ↩
this is a very very long footnote to test if a very very long footnote brings some problems or not; hope that there are no problems but you know sometimes problems arise from nowhere. ↩

Alan Han - Fab Academy 2022

Andpromistomorrow

meta

electronics

ecad and project management

ecad hello world

3d

electronic origami/kirigami

documentation

Msi0

meta

msi tour

2d laser design file

inkscape

epilog

Coffeeshop

meta

tools

gantt chart

scripts

will test w/ 3d media to see if my changes worked

context

Soopr

Code

Language Test

Python

Ruby

Javascript

Elixir

CSS

Post Example With Headings And Toc

Table of contents

The start

The middle

The end

Language Tests

1. 日本語テスト

2. 繁体中文测试

3. 简体中文测试

Very Very Very Long Title And Very Very Very Short Content

Overview Post

Sample heading 1

Sample heading 2

Sample heading 3

Sample heading 4

Sample heading 5

Sample heading 6

Lists

Blockquote

Thematic breaks (<hr>)

Code

Tables

Images