realisation_de_circuits_imprimes [WikiElectronique] ====== Réalisation de circuits imprimés L'impression Le contraste de votre imprimante doit être réglé au maximum. La face “composants” (top) doit être imprimée en mode miroir et la face “soudures” (bottom) en mode normal. Economiser du calque/transparent Pour économiser du papier calque ou transparent vous pouvez : Imprimer le typon sur une feuille A4 normale Découper votre calque à la dimension de la carte Scotcher le calque sur la feuille A4 Imprimante jet d'encre ou laser ? Imprimante jet d'encre + Noir très opaque aux UV - Si le papier est de mauvaise qualité il aura tendance à “boire” l’encre, ce qui diminue la précision - On ne peut pas directement imprimer sur du papier calque standard - Le transparent pour imprimante jet d’encre est cher Attention aux marques des transparents : les Oxford / Agfa / Epson donnent de très bons résultats (0.15 à 0.30€ la feuille pour les Oxford), l’encre ne bave pas et tient bien. Imprimante laser (≥ 600 dpi) - Noir moins opaque Découpe du circuit imprimé
Which Board is Right for Me? For a few months after Raspberry Pi came out, the choice was pretty simple. If you wanted to talk to arbitrary electronics, your best bet was to buy an Arduino microcontroller board; if you needed the power of an ARM-based processor to run Linux, the Raspberry Pi single-board computer (SBC) was the obvious choice (that is, if you could get your hands on one. Delivery issues are mostly resolved, but last year some people waited more than six months for their Pi). Before Arduino and Raspberry Pi, things were more complicated. Going forward, things aren’t just complicated again — they’re bewildering. If you’re old enough to remember the wide range of personal computers that sprung up in the early years of that industry — each with a different manufacturer, each based around a different CPU — then the state of the modern microcontroller board market may seem familiar. Life Before Arduino Still available off-the-shelf today at less than $2 a chip, the PIC is a workhorse. The March of Arduino
How To Make Your Own Sugru Substitute pic2 shows a 2"x2"x2" solid silicone cube that cured enough in two hours to be removed from its plastic box form. For years I have been looking for an inexpensive way to create a flexible skin covering for robots and electronic circuits. I have tried several kinds of casting urethane rubber and silicone rubber. I and many others have tried using the inexpensive silicone caulk that is readily available from hardware stores. So I wanted to add a catalyst that would help the silicone to cure from the inside out rather than just from the outside in. As I understand it, 100% silicone caulk works by the moisture in the air initiating the polymerization of the silicone. I experimented with quite a few additives to try and introduce some moisture into the uncured silicone. It turns out that corn starch is highly absorbent and when sitting around in an open box it will absorb moisture from the air. So that's it.
300+ Awesome Free Internet Resources You Should Know Ali Mese is a freelancer, wanderer, and contributor to few startup projects. Say hi on Facebook or Twitter. This post originally appeared on his Medium blog. I’ve prepared a list of 300 web resources that are not only awesome, but free to use. Business + Marketing HTML5 UP: Responsive HTML5 and CSS3 site templates.Bootswatch: Free themes for Bootstrap.Templated: A collection of 845 free CSS & HTML5 site templates.WordPress.org | WordPress.com: Create your new website for free.Strikingly.com Domain: Free website resources for strikingly.com domains.Withoomph: Beautiful logos designed instantly.Hipster Logo Generator: It’s Hip, It’s Current, It’s Stylish, It’s Hipster.Squarespace Free Logo: You can download free low-res version for free.Hive: First free unlimited cloud service in the world.Invoice to me: Free Invoice Generator.Free Invoice Generator: Alternative free invoice generator.Slimvoice: Insanely simple invoices. Design + Code Some hand-picked some free photo packs: Discover & Learn
Raspberry Pi VS Arduino VS BeagleBoard VS PandaBoard VS Others. Raspberry Pi VS Arduino VS BeagleBoard VS PandaBoard VS Other Mini Computers. Find Out Which One Is Best For You : There Was A Time, When the Computers were as big as ROOMS or HALLS, and used to run on Vacuum Tubes (ENIAC) , but in today's time, it is hard to even find a good sized desktop, the microprocessors really did changed our world. So the new trend is One Board Computers, Designed for true portable computing, these device are the new choice for developers, you can found them in microwaves, toaster, Remotes and in some bathrooms of Dubai's hotels. So Lets Review all of them. Arduino : Well this Silicon Board started the era of One-Board Computers, Designed by Massimo Banzi, This board had everything a developer would want, Including a weak but Capable Processor, attachable shields (Gadgets) and much more. This device is great for Programmers/developers specially if you are into open source hardware . RaspBerry Pi : PandaBoard : BeagleBoard : Cotton Candy :
Réaliser des circuits imprimés Retour à la homepageRetour à la page des électroniquesRetour à la page des circuits imprimés De telles insoleuses existent toutes faites dans le commerce mais il est également possible d'en construire une sur mesure. Vue extérieure Réglage du temps d'exposition Bouton de départ d'exposition Bouton d'arrêt et remise à zéro Trou faisant office de voyant de mise en service Vue intérieure générale Au fond une feuille alu pour réfléchir les UV vers le haut. Les starters électroniques Ce sont des modèles récupérés de baladeuses automobiles en promotion. Et le schéma, si les baladeuses ne sont plus en promotion ... Le temporisateur Il permet l'allumage de l'appareil pendant un temps prédéterminé par un potentiomètre. Le circuit provient de "Nouvelle Electronique - L'Incontournable N°5" de décembre 2004. Quelques modifications ont été apportées: le bouton Reset a été ajouté le trimmer remplacé par un potentiomètre le MOC3020 original par un MOC3043. Retour au début
The Electronic Components and Semiconductor Superstore 5 ways to help our disappearing bees In the spring and summer, thoughts naturally turn to the birds and the bees. Except, the bee seems to be in trouble. You've probably heard about colony collapse disorder (CCD) or vanishing bee syndrome, the mysterious and rather dramatic die-off of domesticated honeybees in Europe and North America. Scientists aren't really sure what's going on yet. All that's known for sure is our bee colonies are suddenly disappearing. In some areas, losses of honeybees are reported to be as high as 75 percent. So what could be happening here? Few of us are research scientists capable of chipping in some lab time to help out, but there are some things we can all do to assist honeybee and natural bee populations close to home. Plant things that bees like Bees particularly like clover. Bees are all about pollen. The good news here is that bee-friendly plants are easy to grow. Clover is a great choice. Flowering trees are also attractive to bees. Provide bee habitat Eliminate garden pesticides
Top 40 Useful Sites To Learn New Skills The web is a powerful resource that can easily help you learn new skills. You just have to know where to look. Sure, you can use Google, Yahoo, or Bing to search for sites where you can learn new skills , but I figured I’d save you some time. Here are the top 40 sites I have personally used over the last few years when I want to learn something new. Hack a Day - Hack a Day serves up fresh hacks (short tutorials) every day from around the web and one in-depth ‘How-To hack’ guide each week.eHow - eHow is an online community dedicated to providing visitors the ability to research, share, and discuss solutions and tips for completing day-to-day tasks and projects.Wired How-To Wiki - Collaborate with Wired editors and help them build their extensive library of projects, hacks, tricks and tips.
How to Choose the Right Platform: Raspberry Pi or BeagleBone Black? This article was originally posted at Michael Leonard’s blog and has been re-posted here. There are already many articles out there comparing Arduino, Raspberry Pi, and BeagleBone Black; this is not one of those articles. I believe it is clear that Arduino is in a different league than the Raspberry Pi or BeagleBone Black, and serves an entirely different purpose. What I was looking for and couldn’t find was a comprehensive article that would summarize all of the pros and cons of the Raspberry Pi and the BeagleBone Black, and what each platform is best suited for. I begin this comparison by giving a short introduction to each platform and then we will take an in-depth look at the two platforms side-by-side to determine which one is best for each category. Raw ComparisonUnboxingEase of SetupTotal CostConnectionsProcessor ShowdownGraphical ShowdownAudio ShowdownPower ConsumptionExpandabilityHardware AccessibilityCommunity Let’s get started! About the Raspberry Pi Top of Raspberry Pi Unboxing
Insoleuse - Brodeur Electronique Date : 18 Juillet 2006 Auteur : Brodeur Ce chapitre va vous expliquer rapidement comment j'ai réalisé mon insoleuse pour faire mes propres circuits imprimés. Vous allez voir, c'est pas très compliqué et ca rend beaucoup de services. Premièrement, vous avez besoin de : 4 tubes néons UV de 4 Watts que l'on peut trouver chez Selectronic à Paris Nation par exemple. 2 ballasts normales que l'on peut trouver chez Leroy Merlin ou Casto 4 starters de 110V (series). Voici le schéma global : Voila, en vrai ca donne ceci : KELVIN® Educational