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Marek Skrobacki skrobul

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How to unbrick an Amazon Kindle Paperwhite™

This guide instructs you in how to unbrick an Amazon Kindle Paperwhite. The consequences of following it are your own responsibility. This method (opening the Kindle and using the serial interface) should be a last resort and should only be considered if other methods fail

The Guide

  1. Pry open Kindle using a prying tool
  2. Unscrew the screen and remove it from the base. Note that there's a screw hidden under the adhesive at the top in the middle
  3. Solder tin wire to serial ports on the bottom
  4. Attach tin wire to USB TTY device (order is ground, RX, TX, from the kindle's perspective, where GND is the smallest pad) and plug USB TTY device into your computer
  5. Open Putty on your computer in serial mode, with the serial port specified as your USB device and baud configured to 115200
@dylanmckay
dylanmckay / facebook-contact-info-summary.rb
Last active Mar 4, 2021
A Ruby script for collecting phone record statistics from a Facebook user data dump
View facebook-contact-info-summary.rb
#! /usr/bin/env ruby
# NOTE: Requires Ruby 2.1 or greater.
# This script can be used to parse and dump the information from
# the 'html/contact_info.htm' file in a Facebook user data ZIP download.
#
# It prints all cell phone call + SMS message + MMS records, plus a summary of each.
#
# It also dumps all of the records into CSV files inside a 'CSV' folder, that is created
@f-f
f-f / spacemacs-cheshe.md
Last active Jul 31, 2019 — forked from robphoenix/spacemacs-cheshe.md
Spacemacs Cheat Sheet
View spacemacs-cheshe.md

Useful Spacemacs commands

  • SPC q q - quit
  • SPC w / - split window vertically
  • SPC w - - split window horizontally
  • SPC 1 - switch to window 1
  • SPC 2 - switch to window 2
  • SPC w c - delete current window
  • SPC TAB - switch to previous buffer
  • SPC b b - switch buffers
@vgoma
vgoma / webpack-dev-server-watch-docker-container-osx.md
Last active Apr 23, 2020
Configuring webpack dev server watch inside docker container on OSX 10.12.5 (Sierra)
View webpack-dev-server-watch-docker-container-osx.md

Configuring webpack dev server watch inside docker container on OSX 10.12.5 (Sierra)

The problem

When running webpack dev server from inside of docker container dev server says that it watching files, but don't react on changes in hosts filesystem. It also can actually react and recompile bundle but stream not updated files to the browser.

Solution

Some of this steps might not needed, but it was long run googling for complete solution

If you're using Webstorm or Phpstorm etc. Try disable "safe write" option in settings:

@Brainiarc7
Brainiarc7 / skylake-tuning-linux.md
Last active Mar 3, 2021
This gist will show you how to tune your Intel-based Skylake, Kabylake and beyond Integrated Graphics Core for performance and reliability through GuC and HuC firmware usage on Linux.
View skylake-tuning-linux.md

Tuning Intel Skylake and beyond for optimal performance and feature level support on Linux:

Note that on Skylake, Kabylake (and the now cancelled "Broxton") SKUs, functionality such as power saving, GPU scheduling and HDMI audio have been moved onto binary-only firmware, and as such, the GuC and the HuC blobs must be loaded at run-time to access this functionality.

Enabling GuC and HuC on Skylake and above requires a few extra parameters be passed to the kernel before boot.

Instructions provided for both Fedora and Ubuntu (including Debian):

Note that the firmware for these GPUs is often packaged by your distributor, and as such, you can confirm the firmware blob's availability by running:

@BretFisher
BretFisher / docker-swarm-ports.md
Last active Mar 2, 2021
Docker Swarm Port Requirements, both Swarm Mode 1.12+ and Swarm Classic, plus AWS Security Group Style Tables
View docker-swarm-ports.md

Docker Swarm Mode Ports

Starting with 1.12 in July 2016, Docker Swarm Mode is a built-in solution with built-in key/value store. Easier to get started, and fewer ports to configure.

Inbound Traffic for Swarm Management

  • TCP port 2377 for cluster management & raft sync communications
  • TCP and UDP port 7946 for "control plane" gossip discovery communication between all nodes
  • UDP port 4789 for "data plane" VXLAN overlay network traffic
  • IP Protocol 50 (ESP) if you plan on using overlay network with the encryption option

AWS Security Group Example

@bmhatfield
bmhatfield / .profile
Last active Mar 2, 2021
Automatic Git commit signing with GPG on OSX
View .profile
# In order for gpg to find gpg-agent, gpg-agent must be running, and there must be an env
# variable pointing GPG to the gpg-agent socket. This little script, which must be sourced
# in your shell's init script (ie, .bash_profile, .zshrc, whatever), will either start
# gpg-agent or set up the GPG_AGENT_INFO variable if it's already running.
# Add the following to your shell init to set up gpg-agent automatically for every shell
if [ -f ~/.gnupg/.gpg-agent-info ] && [ -n "$(pgrep gpg-agent)" ]; then
source ~/.gnupg/.gpg-agent-info
export GPG_AGENT_INFO
else
@tach
tach / Synology_NAS_Tips.md
Last active Aug 7, 2016
My tips using Synology NAS (DS215j)
View Synology_NAS_Tips.md

Synology NAS Tips

Shell operation tips

Password of root is same as administrator account as you created on setup.

How to change shell prompt

PS1="\u@\h:\w$ "
@stevenhaddox
stevenhaddox / ds215j_provisioner.md
Last active Jun 16, 2018
Bootstrap Synology DS215j DSM 5.x provisioner steps
View ds215j_provisioner.md

Boostrap the Synology DS215j with optware, ipkg, and sudo

Inspired mostly from the Bootstrap DS215j blog post

Download & Install ipkg in a persistent manner

# Create a directory that won't get nuked during DSM security updates
mkdir /volume1/@optware
cd /volume1/@optware
@janko
janko / 01-activerecord.rb
Created May 27, 2015
PostgreSQL JSON querying in Sequel (my presentation from our local Ruby meetup)
View 01-activerecord.rb
require "active_record"
ActiveRecord::Base.establish_connection('postgres:///testing')
ActiveRecord::Migration.verbose = false
ActiveRecord::Migration.class_eval do
create_table :played_quizzes, force: true do |t|
t.integer :player_ids, array: true
t.json :quiz_snapshot
end