cyber-murmel

# front           = ./grb/cnc_test-F.Cu.gbr
back            = ./grb/cnc_test-B.Cu.gbr
outline         = ./grb/cnc_test-Edge.Cuts.gbr
drill           = ./grb/cnc_test-PTH.drl
output-dir      = ./cnc

# common
metric          = yes
metricoutput    = yes
zsafe           = 5

cyber-murmel

Usecase

Let's say there is a band on bandcamp you like and you would like to listne to their music even if zou are online. You may already know youtube-dl, but it's tedeous to download all the albums individually.

Code

First let's define a function that returns all the links to every album of one band.

bandcamp_album_links () {
        BAND=$(echo $1 | grep -Po 'https?://\w+\.bandcamp\.com')
        for ALBUM in $(curl -s $BAND/music | grep -Po '/album/[\w-]+')
 do

cyber-murmel

```
ctrl_interface=/run/wpa_supplicant

### key_mgmt=NONE

network={
        ssid="hamburg.freifunk.net"
        key_mgmt=NONE
        priority=0
}

cyber-murmel

ctrl_interface=/run/wpa_supplicant

### key_mgmt=NONE

network={
        ssid="hamburg.freifunk.net"
        key_mgmt=NONE
        priority=0
}

cyber-murmel

# -*- coding: utf-8 -*-

# Copyright 2020 by https://badge.team/
# This file is released under the "CC0 1.0 Universal" license.
# https://creativecommons.org/publicdomain/zero/1.0/legalcode

from machine import Pin, SPI
import wifi, urequests, sys

# Pins

cyber-murmel

# -*- coding: utf-8 -*-

# Copyright 2020 by https://badge.team/
# This file is released under the "CC0 1.0 Universal" license.
# https://creativecommons.org/publicdomain/zero/1.0/legalcode

from machine import Pin, SPI

# Pins
pin_reset = Pin(16, Pin.OUT)

cyber-murmel

# each datamatrix size can fit as many numbers as according to the following dict
# a non-number letter needs double as much space as a number
# an emoji need 16x as much space as a number 😂
size_capacity_maps = {
    'square':   {
         '10x10':     6,   '12x12':   10,   '14x14':   16,   '16x16':   24,
         '18x18':    36,   '20x20':   44,   '22x22':   60,   '24x24':   72,
         '26x26':    88,   '32x32':  124,   '36x36':  172,   '40x40':  228,
         '44x44':   288,   '48x48':  348,   '52x52':  408,   '64x64':  560,
         '72x72':   736,   '80x80':  912,   '88x88': 1152,   '96x96': 1392,

cyber-murmel

Recursive File Integrity Checking using openssl dgst

Checksumming

Use find to iterate trought all subdirectories of the given path (./). openssl dgst -sha256 each file in each directory and add the output to the SHA256 file in the corresponding directory.

find ./ -type d -exec sh -c 'cd "{}"; find ./ -maxdepth 1 -type f -not -name SHA256 -exec openssl dgst -sha256 \{\} + | sort -u | tee SHA256' \;

Checking

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{ pkgs ? import <nixpkgs> {} }:

let
  fixWrapper = pkgs.runCommand "fix-wrapper" {} ''
    mkdir -p $out/bin
    for i in ${pkgs.gcc.cc}/bin/*-gnu-gcc*; do
      ln -s ${pkgs.gcc}/bin/gcc $out/bin/$(basename "$i")
    done
    for i in ${pkgs.gcc.cc}/bin/*-gnu-{g++,c++}*; do
      ln -s ${pkgs.gcc}/bin/g++ $out/bin/$(basename "$i")

cyber-murmel

EE & CE Resources

:::info This is a compiliation of useful links on the topic of electrical and computer engineering. This isnt' a comprehensive list. Feel free to add links to resources you found useful yourself.

:::

:::info