Arduino Based Camera ChatPerf Current Sensor | Modern News There are a number of ways to sense electrical current — and all of them involve some fuss, at least in comparison to sensing voltages. The chief reason for this is that because current is a flow, rather than a potential (like voltage) we need to measure it in series with the circuit, rather than in parallel. For beginners, this is the reason that your multimeter behaves so much differently when you switch it into the current ranges. The resistance of the meter is now very low, as it is meant to be inserted in series with a circuit. Another popular way of sensing current, is to insert a low value resistor in series with a circuit and measure the voltage drop across the resistor. When using mains circuits, often a transformer is employed. Many other small current transformers are available, but for the hobbyist, the problem of tying the circuit to the mains, then finding an enclosure to house the transformer, is also some fuss. The sensor is ready to go and in the shop. Paul
WIKISPEED - WIKISPEED The opensource camera controller based on Arduino | Photoduino - The opensource camera controller based on Arduino iRock / The Worlds first power generating iPad Rocking Chair Récupérer la téléinformation avec un arduino | Blog de C-quad Depuis longtemps j’avais envie de pouvoir suivre ma consommation électrique, sans jamais avoir vraiment franchi le pas. Il existe bien des solutions toutes faites qui permettent de suivre cette consommation via par exemple une pince ampèremétrique, mais j’avais envie de le faire moi même. Cela pour plusieurs raison : Envie de monter en compétence sur ce formidable ArduinoQue cela ne me coute pas trop cher (moins d’un euro l’opto-coupleur + l’arduino qui va servir à autre chose)On est tellement fier quand on a réussi quelque chose fait maison Pour ceux qui ne connaissent pas encore l’Arduino, je vous conseille d’aller faire un petit tour sur le site du projet Il s’agit d’un petit circuit imprimé complètement open-source disposant d’un microcontrôleur facilement programmable. La téléinformation Les compteurs EDF de type électronique possèdent deux bornes (I1 et I2) qui émettent un signal modulé sur 50Hz. Le schéma et l’arduino Et avec ce petit bout de code : Logiciels utilisés :
fablab.fr : Projects TTL Serial Camera This tutorial is for our new TTL serial camera module with NTSC video output. These modules are a nice addition to a microcontroller project when you want to take a photo or control a video stream. The modules have a few features built in, such as the ability to change the brightness/saturation/hue of images, auto-contrast and auto-brightness adjustment, and motion detection. Since it is a little confusing how this is both a snapshot and video camera, we'd like to explain it in detail now. The module was initially designed for surveillance purposes. The module is admittedly not extremely high resolution - the maximum image size it can take is 640x480 pixels. Here are two example images, one of outside during a cloudy day, and one inside on a sunny day.