2018-04-24a few seconds read (About 95 words)

PWM to Analog

Low-Pass Filter a PWM Signal into an Analog Voltage
Using PWM Output as a Digital-to-Analog
Arduino’s AnalogWrite – Converting PWM to a Voltage
RC Low-pass Filter Design for PWM

ANALOG OUTPUT - CONVERT PWM TO VOLTAGE

2018-04-23a minute read (About 164 words)

Data storage in Python

A List of Class Objects (Python)

Change item in List of class

class Person():
    def __init__(self, name, surname):
        self.name = name
        self.surname = surname

lidi = []

lidi.append(Person('lukas', 'novak'))
lidi.append(Person('veronika', 'novakova'))

def first(iterable, default=None):
    for item in iterable:
        return item
    return default

print(lidi)
clovek = first(x for x in lidi if x.name == 'veronika')
clo = filter(lambda x: x.name == 'veronika', lidi)
print(clo)
print(clovek)
print(clo[0].name)
print(clovek.name)
clovek.name = 'tonda'
print(clovek.name)
print(lidi[1].name)

Console output:

pydev debugger: starting (pid: 22355)
[<__main__.Person instance at 0x7ff3caa5ac20>, <__main__.Person instance at 0x7ff3caa5ac68>]
[<__main__.Person instance at 0x7ff3caa5ac68>]
<__main__.Person instance at 0x7ff3caa5ac68>
veronika
veronika
tonda
tonda

Source

Searching a list of objects in Python

2018-04-212 minutes read (About 257 words)

Python write to Excel

Python Excel Tutorial: The Definitive Guide

General info
Working with Excel Files in Python

openpyxl - A Python library to read/write Excel 2010 xlsx/xlsm files

Working with Python Pandas and XlsxWriter

Write to Excel using COM interface

Python Excel Mini Cookbook

enumeration using COM interface

How do I import a COM object namespace/enumeration in Python?

Using COM interface

Quick Start to Client side COM and Python

Importing Data & Writing Files

12 Useful Pandas Techniques in Python for Data Manipulation

Creating Excel files with Python and XlsxWriter

The tutorial for xlrd, xlwt and xlutils
python-excel

Python - Write to Excel Spreadsheet

use python to generate graph in excel

matplotlib not realy excel thing
You can generate plots, histograms, power spectra, bar charts, errorcharts, scatterplots,

Maybe we can find the same class in openpyxl.
The Chart Class

2018-04-18a minute read (About 149 words)

parse map file

Analyzing the Linker Map file with a little help from the ELF and the DWARF

How could I graphically display the memory layout from a .map file?

Map File Browser

Python module to parse GNU ld/gcc map files

Parsing the map file?

MapFile : A tool to analyze .MAP files produced by Visual Studio and report the amount of memory being used by data and code

Viewing GNU* Elf and Map Files

graphing the memory map

mappyfile

2018-04-09a minute read (About 211 words)

DataGridView C#

Change font size and row Height

For specific cell and rows in List HeadlineRow = new List();

DataGridViewCellStyle style = new DataGridViewCellStyle();
style.Font = new Font(dataGridView1.Font.FontFamily, 14, FontStyle.Bold);


foreach (var item in HeadlineRow)
{
    DataGridViewRow row = dataGridView1.Rows[item];
    dataGridView1.Rows[item].Cells[1].Style.ApplyStyle(style);
    row.Height = 30;
}

https://docs.microsoft.com/en-us/dotnet/framework/winforms/controls/how-to-format-data-in-the-windows-forms-datagridview-control

Change column Width

For specific row in List HeadlineRow = new List();

1 2	DataGridViewColumn column = dataGridView1.Columns[1]; column.Width = 600;

Automatic wrap Line

1 2	dataGridView1.DefaultCellStyle.WrapMode = DataGridViewTriState.True; dataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;

https://stackoverflow.com/questions/2154154/datagridview-how-to-set-column-width

Check for empty Cell

Columns = Enum

 DataTable dt = new DataTable();

  DataRow dr = dt.NewRow();

if (!dr.IsNull("ColumnName"))
{
    dt.Rows.Add(dr);
    dr = dt.NewRow();
    CurentColumn = Columns.none;
    if (Headline)
    {
        HeadlineRow.Add(rowNum);
        Headline = false;
    }   
    rowNum++;
}

Drag & Drop

https://social.msdn.microsoft.com/Forums/vstudio/en-US/644ebd2b-1760-4c8e-9faf-63f7c0d2cba5/drag-and-drop-not-working-with-windows-81?forum=vbgeneral

Read data from Text File and put it to datagridview

How to read /load text (*.txt) file values in datagridview using C# ..?

2018-04-08a few seconds read (About 45 words)

Nohavica Youtube

Píseň o té revoluci 1848

Letěly bacily

Himaláje

http://mujweb.cz/astrolot/nohavica_darmodej.html

2018-04-07a few seconds read (About 63 words)

History Vitkovice

Národní klenoty Ostrava, ocelové město

Hledání ztraceného času, Staré filmy z Vítkovic - první díl

Rychlé stroje - Rekordní parní vlaky

Stara Ostrava

2018-04-05a few seconds read (About 92 words)

Work with Excel in C#

How to properly release Excel COM objects
How to excel chart in C# picturebox
Kill Excel.exe Process in C# .NET
Hide Coments VS2015 2017

upgrade to windows 10 vba dataobject.putinclipboard stops working

2018-03-25a few seconds read (About 29 words)

Hauwei push files

/media/lukas/Data/Android/android-sdk-linux/platform-tools$ ./adb shell
df
/storage/sdcard0/oruxmaps/tracklogs
./adb push '/home/lukas/Downloads/Kunraticky les2.gpx' /storage/sdcard0/oruxmaps/tracklogs

2018-03-24a minute read (About 191 words)

Setup Gogs

How To Set Up Gogs on Ubuntu 14.04

Set Database
Gogs(Go Git Service)
https://dev.mysql.com/doc/refman/5.7/en/charset-database.html

https://github.com/gogits/gogs/blob/master/scripts/systemd/gogs.service

https://gogs.io/docs/intro/faqs

MySQL Command Line Cheatsheet

Path for older MySQL

fixed Error MySql /Mariadb error: max key length is 767 byte
v0.11.34_patch

Other solution
Upgrade mariadb version to 10.2 or higher.
Upgrade mysql version to 5.7 or higher.

Settings file Path

1	/opt/gogs/custom/conf/app.ini

Transfer repositories to Gogs

The clone bare brings down all refs/tags/etc, and the push –mirror pushes everything back up.

git clone --bare git@github.com:old/repo.git
cd repo
git remote add origin git@github.com:new/repo.git
git push --mirror

Resource

See Second Comment
Moving A Git Repository To A New Server