Hacking the Used Car Purchase « carsabi Paleo diets, polyphasic sleep, jail-broken kindles – if you recognize these you’re probably a hacker, and we’d like to share some tricks to do with automotive purchasing that we’ve gleaned from looking at about 20,000 dealership and classified car listings daily. Even assuming you don’t habitually optimize (hack) what other people take for granted, car hunting is important enough to be worth serious attention. We’ve used our search database to come up with five hacks that should save you both money and sanity on your next purchase. Shopping on Craigslist will save you at least $2,000 on most vehicles; the ubiquitous Toyota Corolla has median savings of $2,854 (916 datapoints, all clean title) with other models summarized below.
Paré pour construire votre Serre du Futur Vous aimeriez avoir une certaine autonomie et autosuffisance alimentaire, tout en bénéficiant d’un outil durable et écologique ? C’est ce que propose un groupe de jeunes canadiens. Leur projet : La Serre du Futur. Ils proposent un film, un EBook, ainsi que des plans afin d’auto-construire votre propre serre écologique. Le tout pacagé dans un DVD que l’association souhaite propager dans le monde entier. KondensKompressor. Destiladora solar-Goteo solar Kondenskompressor es una técnica que produce agua destilada con radiación solar. Es un sistema muy simple y eficaz que produce un “goteo solar” mediante el cual se puede reducir el agua de riego 10 veces respecto a sistemas tradicionales. Solo deberemos reutilizar unas cuantas garrafas de plástico. ¿Qué es el goteo solar?
Engine control unit An engine control unit (ECU), now called the powertrain control module (PCM), is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. It does this by reading values from a multitude of sensors within the engine bay, interpreting the data using multidimensional performance maps (called lookup tables), and adjusting the engine actuators accordingly. Before ECUs, air/fuel mixture, ignition timing, and idle speed were mechanically set and dynamically controlled by mechanical and pneumatic means.
How to build your own Quadcopter AutoPilot / Flight Controller Fig 1: 3DR Quadcopter Contents This article will walk you through building your own controller whilst teaching you the details of how it works. Power from the people 17 October 2011Last updated at 03:41 By David Cohen Technology Reporter The biofuel cell, uses glucose and oxygen at concentrations found in the body to generate electricity. Plugging gadgets into a socket in the wall, or loading them with batteries - or maybe even unfurling a solar panel - is how most of us think of getting electricity.
OBDII HOWTO Your car's mind is small and designed for readability, so don't be surprised how easy it is to see what it's thinking. Introduction If your vehicle was manufactured after 1996, it contains an On Board Diagnostic (OBD) computer that captures information about how it's running. OBD II is version 2.0 of the standard for communicating this information. The data tracked by the OBD II system was originally intended to monitor the engine's emissions and track down problems that caused cars to pollute more than normal. Today, however, manufacturers have extended the standard to contain a great deal of data about problems and performance.
How to make your first robot If you have purchased an "Instant Robot" shield, you can find a project using that shield here. If you prefer the instructions in a single PDF, Dominic / Servello has made this nice PDF to download - Thanks :) Welcome :) Everything here is so easy, that after you have gone through it, you can make a robot in a couple of hours.
MIT stacks solar panels like pancakes, increases their power output by up to 20x What’s better than one pancake? A whole stack of pancakes! Using the same logic, a team of MIT researchers have stacked a bunch of photovoltaic solar cells together to produce up to 20 times the power output of conventional solar power installations.
Protege5 I thought it would be easier than it actually was. This is not a HOWTO guide. It is a HOWI guide. In other words, it's not how to install your AC adaptor.