28 October, 2014

DIY: Turn your bike into an e-bike for yourself in 5 steps - Step 1: Build the battery from recycled laptop batteries

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BH bike modified to electric with prokit 901; a real pleasure to climb hills with it Some time ago I had in mind to change my bike ...
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Calculating the cost of lighting according to the type of bulb

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Picture:  r (Energy Trends) With the price of electricity rising steadily, and the prices of CFLs, correct evaluation of  what type of l...

Irretrievably Erasing a hard drive: Secure-erase your data

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Before throwing a computer that has no basis in the trash, think twice, because some unscrupulous could recover all your information  e...
27 October, 2014

Report: LED lighting, present and future of lighting

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LED Bulb E27 6W to 220VAC The lighting technology  LED  is already  present and future of lighting,  with prices a few years ago was p...

Changing brushes on washing machine

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Too often, there are washers in perfect condition thrown in recycling because repair costs are too high and not worth repairing, and th...

Get visual output from your Arduino with only 2 resistors (and a screen with Video-in)

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We just need a TV-Out cable and a pair of resistors (1K and 470 Ohms) and  use the library  of mdmetzle@gmail.com  to show the output we...
26 October, 2014

How to use a thermistor or temperature sensor with Arduino: Code for the NTC/PTC types

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Checking the operation of the program One of the most common applications of Arduino is an electronic temperature control via  a simple...

How to Build a battery for a Krautkramer USM 25 ultrasound equipment

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Krautkramer USM 25 (  source  ) Today was the challenge ahead: Search spare parts for rechargeable NI-MH battery 4.8V of an ultrasound m...
25 October, 2014

Install Cyanogenmod on your Android: Give new life to your mobile

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If you want a quick cooked rom like lightning, stable, without unnecessary extras that will occupy memory,  CyanogenMod  is one o...

Upgrade your Samsung Galaxy GT-i9003 with SCL 10.2 CyanogenMod

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If  you want to enjoy the features of the latest Android 4.3,   CyanogenMod 10.2 is now available  to give new life to your mobile phone ...