The electronics and software detailed here measures quantities related to DC electrical energy production from micro-renewables. Including: Voltage, Current and Power.
Do-It-Yourself Book Scanning is using cheap, compact cameras* and Free software to scan books quickly and efficiently. DIY Book Scanners can be as simple as a camera and a piece of glass [PDF] or as involved as the Instructable that brought our community together [PDF / Vimeo]. We've come a long way since then. We have GPL-licensed laser cut designs, aluminum designs, and detailed instructions for beginners. We have built hundreds of scanners and freely shared thousands of design improvements.
... a million stoves to help save the world Copyright © 2009 World Stove. All Rights Reserved.
Frische Pilze sind einfach köstlich - aber nur wer sich wirklich auskennt, sollte Pilze aus der Natur sammeln. So bleibt es dann oft bei den gekauften Champignons aus dem Supermarkt. Dabei gibt es viele leckere Pilze, die man auch ganz leicht selbst im G
supacool - making sound with the pen
schematic may look complicated, but the EnerJar's electronics are actually quite simple. Power is voltage times current, so we must take these values and provide them to the PIC as inputs, so that it can perform the calculation.
The EnerJar is an easy-to-build device that accurately measures the power draw of electrical appliances.
The award-winning EnerJar takes the important concept of home energy monitoring, and brings it to the masses in a fun, interactive way through a handy, downloadable DIY design that can be put together using a jam jar and other household objects.
RC model helicopter prices have reached a point where all sorts of challenging (i.e. crash-prone) robotics projects become affordable. This document explains how to build a 300 g helicopter with embedded Linux and Bluetooth datalink from off-the shelf com
