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Last Word Archive | New Scientist

If a car moving at 100 kilometres per hour hits a concrete wall, all of its kinetic energy must be turned into other forms of energy. What are those forms, and can anyone describe the overall ...

DIY Solar Garage: 14 Steps (with Pictures) -

DIY Solar Garage: Welcome! In this Instructable, I'd like to show you how I installed my own grid-interactive solar array, so that you can too!To start with, this is a "Grid-Tie" or "Utility-Interactive" solar system.

RV Inverter Install: Four Different DIY Methods to Get off ...

After making the decision on your RV inverter purchase, you may just need to start your DIY RV inverter install. We help you sort through the options... Hopefully you've read my previous post "How to choose the Best RV Inverter" which means you did your research, estimated your power ...

Metal Detector DIY Circuit - Electronics Projects Circuits

The heart of this diy metal detector circuit is the CS209A IC. The metal detector is built with one 100µH coil that has 40 mm in diameter and is

Automatic LED Emergency Light Circuit

An Automatic LED Emergency Light circuit is designed to turn ON when there is no adequate lighting or if the power supply is cut-off. Earlier fluorescent lights were used to build such circuits. But the use of LED's have proven to provide adequate lighting for a longer period before draining the ...

Build Your Own Smart LED Street Lamp -

After deliberating for a while, I finally decided to install my own street light on the path leading to my home. A lamppost is actually already there but with a small fluorescent bulb that burned out four years ago.

Electronic Projects -

Electronic Projects mostly associated with solar power. With these requirements in mind, and some others, I decided on a variation of National Semiconductors "Micro Wire"(TM).

8051 Micro Controller Projects & Circuits for Engineering

This article is a compilation of all 8051 based Electronic Projects and Circuits we have developed at CircuitsToday till date. We have one of the biggest collection of 8051 based Projects – which range from very Advanced one's like Electronic Voting Machine, Heart Rate Monitor, RFID based Access Control (and a lot more) to Medium Level and Easy one's like Water Level Controller, Solar ...

Twitpic

Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years. We have now placed Twitpic in an archived state.

David Butcher: Pedal Power Generator - DIY Plans

Every morning, I ride my Pedal Generator to generate electricity. The Pedal Generator I built and ride charges batteries, that run an inverter to produce 110v AC, that powers LED lights, the monitor on my computer, my cell phones, and charges my Roomba, my eGo Electric Moped, as well as many other battery-powered things.