Un livre de Wikilivres. Avertissement électricité Ce document aborde la manipulation de matériel électrique. Avant toute manipulation : lisez attentivement l'avertissement électricité. Un vidéoprojecteur réalisé soi-même Un vidéoprojecteur DIY est un vidéoprojecteur réalisé soi-même (DIY, do it yourself pour fais-le toi-même en anglais). Présentation[modifier | modifier le wikicode] Pourquoi les VP DIY[modifier | modifier le wikicode] Pourquoi se fabriquer un vidéo projecteur DIY (’’Do It Yourself’’) alors qu’on peut en acheter un tout fait dans le commerce ? Prix : Tout d’abord un vidéo projecteur DIY revient bien moins cher, 300 € en moyenne. Les ampoules utilisées ne sont pas les mêmes, nous utilisons des ampoules qui coûtent entre 30 et 45 € et qui durent 10 000 heures. Celles des vidéo projecteurs du commerce coûtent environ 300 € pour 2000 heures. Qualité d’image : De plus nos dalles étant plus grandes, les pixels sont moins agrandis, il en résulte une meilleure qualité d’image. Entretien :
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Telares en cajasEstos telares en cajas de cartón me han robado el corazón. Están en el Museum of Contemporary Craft en Portland pero estoy segura de que pronto tendrán una versión parecida en el colegio de mis hijos.Double Capacity MintyBoost with 4-AA Battery Holder ModificationNeed a highly portable USB power source that can be replenished with readily available, common batteries? The MintyBoost from adafruit Industries is an awesome little kit that nets you a USB charger that runs on 2 AA batteries. This is a great thing because AA batteries are available anywhere and together with the MintyBoost can be used to power most USB devices when you find yourself in a situation with no other source of power. As a volunteer providing emergency communications for organizations that are deployed to disaster stricken areas I have been in this situation before. Keeping critical communications links operational in the field is a major mission success factor. Having a highly portable source of USB power to keep cell phones working is a valuable tool for the first responder. This charger does more then just provide the 5 volts required to charge USB powered devices. This battery holder modification is the primary subject matter of this instructable.
untitledEditors Note: Guest Post by Betsy & Warren Talbot Let’s face it: We all have too much stuff. Whether it is the things you no longer need, the items you never got around to using, or the “treasures” thrust on you by well-meaning people, you are probably shrinking your living space with all that clutter. It’s more than simply buying nothing new. There are 3 steps you can take to finally let go of those items no longer working in your life. But before you start planning your next big holiday, let’s focus on 3 powerful strategies to let go of your possessions. Instead of Keeping Up with the Joneses, Keep Up with Your Dream: This is the classic mistake many people make. It’s like high school all over again as you struggle to keep up with what other people’s families have and how they spend their free time. To learn to be clutter free, adjust your focus to the ultimate dream you have for your life and not what the couple down the street just bought. Remove Mental Clutter Before Physical Clutter:
Coban - Logiciel Libre pour électricienInstructables - Make, How To, and DIYMaking Paper Bricks in IndiaAt MAKE we have covered a type of paper brick before, but it was used simply as a fire starter. Professors Rahul Ralegaonkar and Sachin Mandavgane of the Visvesvaraya National Institute of Technology in India (VNIT) have come up with a process to make paper bricks designed for creation instead of destruction. It started when they visited a paper recycling plant in 2009. They learned that 15% of the material that went through the plant was piled up into an unsightly sludge and sent to a landfill. For those not familiar, this is a prime example of one of the perils in recycling as opposed to upcycling. Recycling results in materials being turned into products of a lower quality than their predecessors, while upcycling preserves the quality of the product through many generations. Raleganokar and Mandavgane decided to take some of that sludge back to their lab and play around with it along with students over the summer. Related
DIY Light Transmitting Concrete (+ HD Video)Make sure to check out my blog! I'm going to show you (as best as I can) how to make light transmitting concrete. Google it, and you will be amazed at how beautiful it is! I was desperate to get my hands on some...but considering the cost, I decided to make some with stuff I already had around. This material has the strange effect of looking shiny or sparkly...but it's dull concrete at the same time! If this material interests you, check this article out: Here is the HD video: Here is the normal video:
Build a Food Storage ShelfPreparation Instructions: Fill all holes with wood filler and let dry. Apply additional coats of wood filler as needed.Rear-projection television45 inch Zenith CRT rear-projection TV Rear-projection television (RPTV) is a type of large-screen television display technology. Until approximately 2005, most of the relatively affordable consumer large screen TVs up to 100 in (250 cm) used rear-projection technology. A variation is a video projector, using similar technology, which projects onto a screen. Three types of projection systems are used in projection TVs. Background Modern rear-projection television has been commercially available since the 1970s, but at that time could not match the image sharpness of a direct-view CRT. However, the projection technique is much older than this. History Types of rear-projection technologies A projection television uses a projector to create a small image or video from a video signal and magnify this image onto a viewable screen. See also References
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