My Accounting program

I’ve made a program for tracking my finances. It is not a big deal, but it does the job for me.

It is web based, works on top of LAMP stack (Linux, Apache, MySQL and Php).

You can try it – the code is available at: GitHub

The install:

1). Drop the source code in a folder at Apache’s document root:[ . . . ]   read more

Счетоводната ми програмка

Направих си една програмка за следене на финансите ми. Не е нещо особено, но на мен ми върши добра работа.

Уеб базирана, работи върку LAMP stack – Linux, Apache, MySQL и Php.

Ако някой иска да я ползва – кодът се намира: GitHub[ . . . ]   read more

Ransomware and Munich

In the lights of recent worldwide ransom-ware attacks- Wikipedia to computers in Windows world, I am wondering what happens to the process of migrating back from Linux (LiMux) to MS Windows in Munich City Government. As you probably know they managed to switch 15,000 desktop PCs from Windows to Linux and running fine for more than 10 years. Some local politician decided to go back after an offer from Microsoft to switch to Windows 10. Coincidentally Microsoft’s head quarter moved to Munich around the same time.[ . . . ]   read more

My new Chromebook

I bought an ASUS Chromebook Flip 10.1″ Touchscreen Laptop (Quad Core, 4GB, 16GB eMMC) – Aluminum Chassis. I know it is like a dumb terminal (browser), but as a Linux fan my intention is to install Linux on it. Boy that thing is thin – love it.[ . . . ]   read more

3.5 inch Touch Screen Display For Raspberry Pi 3

Today Santa brought me a new 3.5″ display  for my Raspberry PI 3 and I am busy now installing it and making it to work. Mine came with a Protective Case + 3 x Heat sinks+ Touch Pen

Assembling was a piece of cake. I had already running Raspbian on my Rpi using it mostly headless (via ssh), connected wirelessly to my LAN. When I powered Rpi on, the display went all white – so far so good. Time to install some software in order display to be recognised. Found a nice site with a wiki  http://www.waveshare.com/wiki/5inch_HDMI_LCD

They are talking about 5″ display, but I decided to give it a try and see what happens with my 3.5″.

#1. Downloaded the driver while ssh-ed to my Rpi using wget as root wget http://www.waveshare.com/w/upload/3/3d/LCD-show-160811.tar.gz #2. Extracted the files from the archive tar xzvf /boot/LCD-show-YYMMDD.tar.gz #3. Added couple of lines to /boot/config.txt file max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 #3. Ran install cd LCD-show/ ./LCD35-show #4. Rebooted [ . . . ]   read more

LinuxCon 2016

Tomorrow Linux will turn 25.

There is a LinuxCon event in Toronto and I decided to visit it and see Linus’ keynote. What a disappointment was as per schedule it suppose to be like 10 minutes long. On top of that they asked me to register and pay $100. I will pay… but some other time (never). I am not interested in corporate drones there and their containers (most of the topics of the conference). VMware, HP, IBM and surprise Microsoft and Citrix (WTF). MS even has a keynote. Some memberships are $1100 – good luck with that. I don’t make my living with Linux or containers. That explains why Linux desktop is going nowhere – there is no money in it (for FSF).[ . . . ]   read more

Measuring Temperature and Humidity with Raspberry Pi

After I played with OLED display with Raspberry PI, the next logical step is to display more useful information on it.

DHT22_AM2302

I bought a sensor DHT22_AM2302 which is a Digital Temperature Humidity Sensor with serial interface.

The device measures both temperature and humidity and you get the values in single poll.

Connected GND to Rpi’s GND,

Vcc to Rpi GPIO- pin 2 and finally

Data to GPIO pin 8 (GPIO 14)[ . . . ]   read more

Windows 7 updates stuck (or suck)

I did fresh install of Windows 7 on both bare metal PC and in Virtual machine. Install went ok, but no updates. Checked for updates – 4hrs and still “checking…” I interrupted it.

Found a tool on the MS site which suppose to fix the problem: http://go.microsoft.com/?linkid=9767096

10 hrs later this tool is still “Checking for updates”

Mind you that this is complete fresh install, without any 3rd party software installed, even no antivirus program.[ . . . ]   read more

OLED display to Raspberry Pi

Today I played with an OLED Display. I bought it from Amazon for $14 which is 0.96 Inch I2C and SPI Serial 128 x 64. It needs only 4 wires to connect to Raspberry Pi. This display is a monochrome (blue) – hence the price.

 i2cdetect -y 1

Showed the display detected on the I2C bus

Couple of lines of code from GitHUB – show IP address and the time. Graphics also can be drawn – lines, circles, rectangles, ellipses etc. even displaying .png files.

oledoled_1

#!/usr/bin/env python # # !!! Needs psutil (+ dependencies) installing: # $ sudo apt-get install python-dev # $ sudo pip install psutil # import os import sys if os.name != 'posix': sys.exit('platform not supported') import psutil from datetime import datetime from oled.device import ssd1306, sh1106 from oled.render import canvas from PIL import ImageDraw, ImageFont f = os.popen('/sbin/ifconfig wlan0 | grep "inet\ addr" | cut -d: -f2 | cut -d" " -f1') your_ip=f.read() from time import gmtime,localtime, strftime t = strftime("%Y-%m-%d %H:%M:%S", localtime()) def stats(oled): font = ImageFont.load_default() font3 = ImageFont.truetype('/root/oled/fonts/C&C Red Alert [INET].ttf', 18) font4 = ImageFont.truetype('/root/oled/fonts/C&C Red Alert [INET].ttf', 22) with canvas(oled) as draw: draw.text((0, 26), your_ip, font=font4, fill=255) draw.text((0, 48), t, font=font3, fill=255) def main(): oled = ssd1306(port=1, address=0x3C) stats(oled) if __name__ == "__main__": main() [ . . . ]   read more

Добавих твърдотелен диск към уеб сървъра

Купих си един твърдотелен диск (Solid State Disk SSD) ADATA 120GB за $45 и го добавих към сървъра с надеждата да се подобри производителността.

Кореновата файлова система я оставих на оригиналната SD карта,просто преместих /var директорията и swap файла върху новият диск. Да напомня, че MySQL, Apache, логовете и др. са във /var директорията.[ . . . ]   read more