Electronics-Projects & Circuits. Solenoid, Door Bell, Electromagnet. Solenoid Make an electromagnet to move a plunger, then use it to make a door bell and a launcher (electric catapult). Introduction: You have already made electromagnets with iron cores and examined their magnetic forces. In your experiments you wrapped the insulated wire right over the core; however, you could also wrap the wire on a plastic or paper tube and then insert the nail in the tube. The tube with wire on that will form the coil.
The metal you insert in the tube will be the core. When the core is removable, you may also perform additional experiments related to electromagnet. Problem and Purpose: Make an solenoid (electromagnet with moving plunger) and use it as a door chime and a launcher. Construction: Get a 2" (5 cm) tube and wind 40 feet (12 meters) magnet wire around it in a way that about one foot (30 cm) wire remains unwind from each end. Make a door chime Make an electric Catapult. SchemeIt | Free Online Schematic Drawing Tool. 2n2222 Switch by Holger. Use LEDs as photodiodes. Tests d'appareils photo numériques reflex. Mélanie Lesbats. Iris est un travail que j’ai pu concrétiser pour la manifestation annuelle de la Nuit des Chercheurs.
L’association Connaiscience m’a donné les moyens financiers ainsi que le contact d’un scientifique, Henry Reboul chercheur au GRAAL . L’association Kawenga m’a proposé un atelier sur Montpellier pour réaliser ce travail. La forme du prisme rappelle celle de sculptures minimales. Le poisson joue le rôle de perturbateur tant visuel que mental. Il suscite maintes interrogations. Il est censé apporter une touche humoristique à l’expérience mais surtout, sa présence matérielle complique l’expérience. En guise de source lumineuse, j’utilise un projecteur de diapositives. Part 1 - The Hawking Paradox - BBC Horizon. Relays. Imprimer : Calcul de la section des câbles électriques en 12V. Je ne sais pas si les cosses soudées à l’étain sont interdites en automobile, mais je suis bien certain que les industriels ne le font pas par simple raison économique : en dehors de toute considération de fiabilité cela leur coûterait bien trop cher ! [mode HS on]En restant dans l’industrie automobile il y a un exemple célèbre : comment Citroën s’est fait griller sa célèbre 2CV par la 4L de Renault ?
La 2CV avait un châssis nécessitant énormément de soudures, contrairement à la 4L avec sa carrosserie auto-porteuse... [mode HS off] Pour revenir dans le sujet du choix des sections des câbles il y a une similitude entre les constructeurs modernes de bateaux et l’industrie automobile : Le prix de revient ! En pratique, une batterie neuve est capable de délivrer une intensité sous une certaine tension. Toujours en pratique, il suffit souvent de doubler la section des câbles du circuit de démarrage pour doubler ou tripler la durée de vie utilisable de la batterie ! OPEN%20DMX%20adapter_bb. Câble d'alimentation - etanche à 4,85 € (Alimentations éclairage led) BC547B datasheet(3/8 Pages) PHILIPS | NPN general purpose transistors. LBC847A datasheet(1/6 Pages) LRC | General Purpose Transistors NPN Silicon. 2N3904. A 2N3904 in a TO-92 package on a breadboard (lower left) Another 2N3904 The 2N3904 is a common NPN bipolar junction transistor used for general purpose low-power amplifying or switching applications.
The type was registered by Motorola Semiconductor in the mid-sixties, together with the complementary PNP type 2N3906, and represented a significant performance/cost improvement, with the plastic TO-92 case replacing metal cans. It is designed for low current and power, medium voltage, and can operate at moderately high speeds. This transistor is low cost, widely available and sufficiently robust to be of use by experimenters.[1] When looking at the flat side with the base pointed downward, the three wires emerging from the base are, left to right, the emitter, base and collector leads.[2] It is a 200 mA, 40 volt, 625 milliwatt transistor with a transition frequency of 300 MHz,[3] with a minimum beta or current gain of 100 at a collector current of 10 mA.
References[edit] Further reading[edit] Triac ou Transistor en commutation ? MOC / TRIAC + Ardunio. I used a MOC3011 and a Q4015 TRIAC to use my Arduino to blink a few Christmas light strands. I did this a few months ago, yet never posted it here... The MOC is a optoisolator in a way, as it seperates the arduino from the high voltage 110v circuit. It is also used because the arduino doesn't have the power to directly drive the TRIAC.
There are two different configurations: resistive (ex LEDs) or inductive (ex a motor). The symbol for the TRIAC is a little weird, so make sure to check the datasheet for which pins are which. One thing you should note is that the MOC3011 doesn't have zero point detection, so unlike the MC3041, it cant do PWM based fading correctly correctly due to flickering. Code: #define LedPin 7 int OnDly; int OffDly; void loop() { OnDly=analogRead(A2); OffDly=analogRead(A3); Serial.print(OnDly); Serial.print(", "); Serial.println(OffDly); Systeme de son sphere | OBJETS UNIQUES. Construisez vous même votre système sonore sphérique, et vivez une nouvelle expérience auditive. Unique et insolite, fabriquez vous un objet de décoration fonctionel.
Simple a construire, il fera le meilleur effet dans votre salon ou dans votre salle de jeux. Prenons par exemple deux récipients en plastique de type rond et profonds (gros saladier par exemple), bien choisir sa couleur, sauf si on est prêts à peindre… Il nous faut aussi bien entendu un système de son prêt à l’emploi. pour cela on peux tout accheter dans un magasin spécialisé (baffles, filtres, eventuellement ampli et connectiques), dans ces magasins les vendeurs sont de très bon conseil.
Donc, une fois la partie « sonore » réglée, passons à la réalisation. Les deux récipients une fois collés ensembles doivent créer une sphère. Dans la mesure du possible, chaque moitié devra comporter le même nombre de baffles. A l’aide d’une scie ou autre, faire des trous pour faire passer les baffles. Une autre idée sonore petite et facile. 4 Channel 12V Relay Module Shield Expansion Board for Arduino Optical Isolation. 433M superregeneration Wireless transmitting and receiving module theft alarm.
Résultats Google Recherche d'images correspondant à. KMtronic LTD: RS485 Serial controlled Eight Channel Relay Board - 12V. Home :: RS485 :: RS485 8 Channel Relay Controller, 12VDC, RS485 BUS ID: 01, Relays: 1-8 Features: - ID: 01 - Relays from 1 to 8 - Can be connected up to 32 to one PC COM Port (NOTE: if you need to connect more relay boards to one RS485 BUS - all boards must have different ID number) The complete includes: - One RS485 to 8 Digitally Outputs controller (12V) - One 12VDC RELAY board (12V) - 10PIN flat cable approximate 5cm length Required power: 12VDC / minimum 400 mA.
Dimensions: Relay board : 120mm / 80mm / 20mm RS485 controller : 40 mm / 60 mm Communication Parameters: 8 Data, 1 Stop, No Parity Baud rate : 9600 Commands: Relay 1 commands: OFF command : FF 01 00 (HEX) or 255 1 0 (DEC) ON command : FF 01 01 (HEX) or 255 1 1 (DEC) Relay 2 commands: OFF command : FF 02 00 (HEX) or 255 2 0 (DEC) ON command : FF 02 01 (HEX) or 255 2 1 (DEC)...... ...Relay 8 commands: OFF command : FF 08 00 (HEX) or 255 8 0 (DEC) ON command : FF 08 01 (HEX) or 255 8 1 (DEC) RS485 BUS exsample: Additonal information. PowerSwitch Tail II. A power cord that switches 120vac power directly from a microcontroller I/O pin (3-12vdc, 3-30ma) "The easiest way to control an AC device with an Arduino, Raspberry Pi, Beaglebone or any other DIY controller.
" *** Either unit can be field rewired for normally open (NO) or normally closed (NC) operation. Soldering required. *** No exposed 120vac voltages and no dangerous 120vac wiring required.Plugs into standard 120vac 3-prong household outlets, power strips, and extension cords.Eliminates the exposure of hazardous voltages in DIY projects, classrooms, and on development workbenches.No special 120vac wiring when deploying new products and custom solutions. 5300vrms isolation from the 120vac circuit.
Using Relays with Arduino – Turning on the Lights. Warning!!! This project deals with AC electricity which is dangerous if you don’t know how to treat it safely. You must treat electricity with caution. There are many books and websites about electrical safety procedures and if you’re not sure how to be safe you should read that information. The most basic advice I can give is always assume any exposed wires are live and touching them will hurt a lot at best and kill at worst. Microcontrollers are good at controlling small devices, but frequently we DIY-ers want to use them to control things that aren’t so micro.
In this post I’ll talk about how to turn on household lights with the Arduino microcontroller. The first thing you need is a cheap extension core that you are willing to cut in half. I spliced the relay into the black wire on my power cord. The last step and the one that makes this project useful is getting the microcontroller to control this relay. Credits. Connecting a Relay to Arduino. ElectronicBricks-1. Get your brand new Wikispaces Classroom now and do "back to school" in style. guest Join | Help | Sign In arduino-info Home guest| Join | Help | Sign In Turn off "Getting Started" Loading... ArduinoPower. (Power Switching devices for Arduino) Left-Right: A "relay electronic brick", a 4-relay board, an 8-relay board, a 4-Power-FET "brick" Having your Arduino control higher-power devices like lights, motors, pumps, doors, and many more is one of the most interesting and useful applications you may get involved with.
But it can be a little difficult and possibly dangerous when power line voltages are being controlled. There are significant differences in controlling AC power compared to DC. And there are considerations about different kinds of loads and so forth. This section will cover many of these subjects, show several available devices you can connect to Arduino to control power (examples above), and provide examples of working projects. Outline: A simple example: Get your Arduino plugged into your main computer, and download the Good Old Blink Program. Pins, Bits and All That: You should be getting familiar with Arduino and it's pin connections. Arduino Connection Options: DC Switching:
Connecting a 12V relay to Arduino. Electronic brick -5V Relay module (digital) [ELB115E4M] - $6.50. Controllable Power Outlet. In this tutorial we will discuss a small relay board to control the power to a normal AC outlet using 5VDC control. All the usual warnings apply: Main voltage (120VAC or 220VAC) can kill you. This project, done incorrectly, could certainly burn down your house. Have your pet spayed or neutered. Shampoo is better. Do not work on or solder to any part of a project while it is plugged into the wall - just unplug it! You can get the Eagle files for the control board here. The control board is composed of a relay along with a NPN transistor and LED. What’s a relay?
A relay is a large mechanical switch. In this example we are going to talk about the simplest version of a relay. The other half the relay is called the coil. It is important to note the coil is physically isolated from the paddles. The paddles are capable of carrying very large currents. The relay that we will be working with, in this tutorial, is a beefcake in my opinion. The Outlet Materials: The Inline Power Control Board The Build. GEG-controler-appareils220V-midi.pdf (Objet application/pdf) Commande Moteur avec Transitor MOSFET. Disconnected / Cosketch. Editing "Unnamed Circuit".