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Instalation FTP (vsftpd): sudo apt-get install vsftpd in the file /etc/vsftpd.conf find setting for vsftpd. You can find setting for enable anonymous, allow log in from local users, enable any…

If you want to try linux on STM32 microcontrollers (ucLinux a STM32F429-Discovery), check this tutorial. First step, download openocd from sourceforge website or install it from application and software center…

I needed power supply (step down converter) for my big project with minimal 2A current and fixed output voltage (3.3V) or adjustable output voltage. I wanted higher efficiency and that’s…

This is next circuit switching converter. This converter reduces the voltage from 12V to 3.3V with very popular DC/DC converter MC34063. The coil was calculated on the 22uA, but the…

The development boards are very popular. I decided to share this list. These boards are interesting, popular and cheap (to 30? – by farnell.com). If you click on the picture,…

I would like to tell you that I’m not prefessional in security, but i would like to show you article about basic security of linux server. Sources for this article…

I had to create development board with SIM908 – GPS&GSM&GPRS module for diploma thesis. The board is designed as top side. It’s easier than top and bottom sides. On the…

HOW TO create a bus, adding copper ground pour in Eagle, adding pin power operational amplifier, move text/name/value components, increasing pad (pin) of component. How to increase size of pad…

If you program microcontrollers by STM (STM32F4, STM32F0, STM32L1) with Standard Peripheral Library your code is bigger than without Standard Peripheral Library. It is motivation why we can program of…

If you have our development board with SIM908 or something else, you have to know AT commands for GSM/GPRS/GPS module. Repetition again. You have to connect UART from SIM908 module…