Electronics Projects & Circuits If you've already worked through a few projects from my books; Electronics Projects For Dummies or Complete Electronics Self Teaching Guide and caught the electronics bug you might want to try a few projects from other sources. To help you out heres a list of some interesting electronics projects that we've found around the Web . These projects look interesting and are well documented but we haven't had a chance to build them all, so results may vary! We've also included links to other Web sites that contain projects you can browse through. Electric Wire Locator: This project by Charles Wenzel can be used to locate electric wires in walls, it may be useful when remodeling. Weather Station: This project on the TechDesign Electronics Web site uses the PIC 18F452 microcontroller, pressure, temperature, and humidity sensors along with radio transmitter and receiver modules to allow you to monitor the weather. Color Sensor. Speech Amplifier/Loudspeaker. A refrigerator door alarm.
VPT 7 VPT 8 by HC Gilje, released may 2018. Video Projection Tool (VPT) is a free multipurpose realtime projection software tool for Mac and Windows. VPT 7 was downloaded over 100000 times, so in spite of a lot of other options available VPT still is popular. Among other things it can be used for projecting mapping on complex forms, adapt a projection to a particular space/surface, combine recorded and live footage, for multiscreen HD playback, for interactive installations using arduino sensors or camera tracking ++. VPT is very flexible in terms of control, with presets and a built in cue list, as well as control over almost every single parameter using OSC, midi, serial communication, built in LFOs and ArtNet. It also supports syphon (mac) and spout (windows) for sharing video streams between applications. VPT 8 is recommended for mac OS 10.12 or later and Windows 7 and 10 (although VPT 7 works great on Windows 7). and yes, it is still FREE! VPT 8 has a lot of under-the-hood changes. extras:
LED driving and controlling methods I decided to write this quick tutorial for two reasons: First because there are many people who would like to know more about driving and controlling LED lights, and second because i was provided an excellent LED driver chip from Farnell for test, and i wanted to put it under the microscope. So i will place this chip against some other LED drivers to see how good it is. The chip that I'm talking about is the A6210 from Allegro Microsystems. It is a Buck-Regulating LED Driver able to drive up to 3A load with constant current, with switching frequencies up to 2 MHz and supply voltage from 9 to 46 volts. It has an optional PWM input to control the brightness of the LED. The sense voltage is down to 0.18 volts for higher efficiency. The previous description may sound Greek to you, but after reading this tutorial you will be able to design your own LED driver. You can now start reading the theory pages: Page 1: Quick info about LEDs and LED voltage control with limiting resistor Videos Comments
LIME ART GROUP – Interactive Video Mapping Concise electronics for geeks Copyright (C) 2010 by Michal Zalewski <firstname.lastname@example.org> There are quite a few primers on electronics on the Internet; sadly, almost all of the top hits resort to gross oversimplifications (e.g., hydraulic analogies), or convenient omission, when covering subtle but incredibly important topics such as the real-world behavior of semiconductors. There are some exceptions, to be sure - but they tend to suffer from another malady: regressions into mundane, academic rigor, complete with differential equations and complex number algebra in transient analysis - a trait that is highly unlikely to be accessible, or even useful, to hobbyists. The physics of conduction [link] As you probably recall from your school years, the dated but still useful Bohr model of the atom explains that atoms consist of a dense center (nucleus) with a variable number of protons and neutrons. The strongly bound and heavy nuclei of stable isotopes do not undergo any structural changes under everyday circumstances.
dafdiesunddas | Deutsch lehren, lernen und weiterkommen 200 Transistor Circuits This will clear-up a lot of mysteries of the solar panel. Many solar panels produce 16v - 18v when lightly loaded, while other 12v solar panels will not charge a 12v battery. Some panels say "nominal voltage," some do not give any value other than 6v or 12v, and some specify the wrong voltage. You can't work with vague specifications. You need to know accurate details to charge a battery from a solar panel. 1. 1. 2. You can clearly see the 11 cells of this panel and it produces 6.6v when lightly loaded. This panel claims to be 18v, but it clearly only produces 14.4v. 3. ADDING A DIODE Some solar panels will discharge the battery (a small amount) when it is not receiving sunlight and a diode can be added to prevent discharge. PREVENTING OVERCHARGING There are two ways to prevent overcharging the battery. 1. Here is the simplest and cheapest regulator to charge a 12v battery. CHARGE CURRENT Here is a very clever circuit to find the charging current, if you don't have a multimeter.
Embedded Geeks Réalisations - Alim pour lasers 001 Electronique > Réalisations > Alimentations > Alimentation pour diode laser 001 Dernière mise à jour : 12/08/2012 Présentation Ce genre d'alimentation est fortement recommandé sinon indispensable pour une utilisation sans risque d'une diode laser. Une diode laser peut être utilisée sans régulation d'alimentation, à l'aide de deux ou trois piles de 1,5 V montées en série (c'est ce qui se fait dans les pointeurs bon marché ou dans certains porte clés) mais au détriment de la durée de vie du composant. Avertissements Un laser est dangeureux ! Schéma Pas vraiment complexe, il s'appuye sur un régulateur de tension intégré ajustable très courant, le LM317, ce dernier étant monté en générateur de courant constant. Vous pouvez appliquer à l'entrée du régulateur LM317 (sur le connecteur J1) toute tension comprise entre 6 V et 12 V. I (dans diode) = 1,25 / R où R = R1 + RV1 Courant supérieur à 100 mA Les diodes laser issues de graveurs de DVD demandent plus que 100 mA. Avertissement Circuit imprimé