Santatic santatic

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work

Keychron Keyboards on Linux use the hid_apple driver (even in Windows/Android mode), both in Bluetooth and Wired modes. By default, this driver uses the F-keys as multimedia shortcuts and you have to press Fn + the key to get the usual F1 through F12 keys.

Add repo with wifi drivers

sudo add-apt-repository ppa:kelebek333/kablosuz
sudo apt-get update

Download all deb packages to a dir so you can copy them to a flashcard

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

Pry open Kindle using a prying tool
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
Solder tin wire to serial ports on the bottom
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
Open Putty on your computer in serial mode, with the serial port specified as your USB device and baud configured to 115200

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

Pry open Kindle using a prying tool
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
Solder tin wire to serial ports on the bottom
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
Open Putty on your computer in serial mode, with the serial port specified as your USB device and baud configured to 115200

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

Prerequisite

Hardware

Prying tool
Screw driver
USB to serial cable (1.8V the best, other not tried and may fried your kindle)
USB to micro USB cable

	def show_worst_drawdown_periods(returns, top=5):
	"""
	Prints information about the worst drawdown periods.

	Prints peak dates, valley dates, recovery dates, and net
	drawdowns.

	Parameters
	----------
	returns : pd.Series

	import backtrader as bt
	import pandas as pd
	import numpy as np


	class PivotPointLine(bt.Indicator):
	lines = ('pivot_up', 'pivot_down', 'pl_value', 'direction',)
	params = (
	('pivot_window_len', 12),
	('history_bars_as_multiple_pwl', 30)