Author Archives: iwi

TP-Link MR3420 setup OpenWRT

OpenWrt is a powerful Linux distribution for embedded devices. Main target is various router boards, but also other small devices like GuruPlug, ALIX Boards, OLPC. List of all supported hardware: Using this distribution require little Linux skills and lot … Continue reading

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TP-LINK MR3420 hardware

TL-MR3420 is Wireless N Router with USB 2.0 Port for UMTS/HSPA/EVDO USB Modem. Model Name TL-MR3420 Dimensions 6.9 x 4.4 x 1.2 in. (174 x 111 x 30 mm) Power 9VDC / 0.85A Ports #1 – USB 2.0 #1 – … Continue reading

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Arduino Nano v3 internal temperature sensor

Calibration data: Download data & formulas in excel. Atmega documentation says: The voltage sensitivity is approximately 1 mV/°C and the accuracy of the temperature measurement is +/- 10°C. Measured temperature is a sum of ambient temperature and chip’s TDP. In … Continue reading

Posted in Arduino, C++, Electronics | 8 Comments

Gentoo default Python interpreter

Gentoo default Python interpreter is set to version 3.1: ~ # eselect python list Available Python interpreters: [1] python2.6 [2] python3.1 * Command to change default interpreter: ~ # eselect python set 1 And now interpreter version is 2.6: ~ … Continue reading

Posted in Linux, Python | 1 Comment

Gentoo web2py daemon

Gentoo RC init script for web2py framework Save as “/etc/init.d/web2py” To make a file executable: chmode +x /etc/init.d/web2py Add to default runlevel: rc-update add web2py default Start daemon: rc-config start web2py

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Remove Windows 7 password

This is the most easiest way to remove password of Windows system. Works on all Windows [NT/XP/Vista/Seven] – [32/64] versions. DANGER! If used on users that have EFS encrypted files, and the system is XP or newer, all encrypted files … Continue reading

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Python GUI calc

Python GUI experiment. Simple calculator application made with Tk. It’s a first choice because it’s integrated into Python, simple to use and powerful enough for most cases. It’s also cross platform like an interpreter. However, there are many other libraries … Continue reading

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Voltage Drop Protection

DC motor drive circuit with automatic load regulation. Main concept is to cut off power from DC Motor and sustain the voltage in the circuit. Also detect low-battery state. Components: #1 – Dual Op-Amp CA158 (Like LM358) #1 – Trimmer … Continue reading

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Liquid Armor

Mainboard Asus Striker II NSE Video GeForce GTX 460 1 Gb ddr5 Pci-E Dual DVI / Mini HDMI OC Edition RAM OCZ DDR3 PC3-12800 Reape HDD #2 RAID 0 (Striping) WD Caviar Black 640 Gb Audio Creative X-Fi Titanium Fatal1ty … Continue reading

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Fonera 2.0n hardware

Model Name FON2303 Dimensions 30 mm x 157 mm x 127 mm (excluding antenna) Power 12VDC, 1A (It seems to work with 6VDC) Ports #1 – USB 2.0/1.1 #1 – Ethernet WAN 10/100Mbps #4 – Ethernet LAN 10/100Mbps Antennas #2 … Continue reading

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