Welcome to Imajeenyus. Induction. Building robots instead of sleeping. Home Projects Shop Forums Download About JRO Other NEW version 1.1 of the hardware has been completed! Improvements in v1.1: Frame-rate is increased from 27 frames/sec to the full 30 frames/sec The OV6620 image sensor crystal now supplies the clock to the AVR mega8 Auto-baud of the user-interface serial port will be supported soon... Size of the unit: 2.4" x 1.9" Available for purchase 11/2004 NEW Check out this video of the AVRcam on my line-following robot EyeBo-3, tracking the line visually at 30 frames/second! The line is purposefully not straight, to see how it would do with zig-zags and splits, as are normal for the Chibots advanced line-following contest. AVRcam Capabilities The AVRcam is a small, real-time image processing engine capable of tracking colorful objects.
In addition, the AVRcam is supported for demonstration and calibration by a PC application called AVRcamVIEW. AVRcam Hardware The AVRcam hardware has evolved several times since the project began in April of 2004. Arduino I2C Sniffer » johngineer. I’m working on an I2C project, but I don’t have a sampling oscilloscope and I need to see what the heck is going on, so I put together this quick and dirty I2C sniffer sketch. You connect two digital pins on the Arduino to the I2C bus lines SDA and SCL, and Arduino ground to I2C ground. The digital pins on the Arduino must be on PORTD, which are pins 0 through 7.
It’s probably a good idea to avoid the serial lines, which means you should use any two pins between 2 and 7. It captures the data (within a certain time window) and then it sends CSV-formatted output to the serial port. You can then take this data and plot it to get an idea of what’s going on on your I2C bus. Naturally, you could expand this to sniff other bus-types, like 1-wire or SPI, provided the signalling rate is low enough. For SPI you might trigger off the SS line. This code runs a “one-shot” capture, meaning that it only captures data once and then dumps it to the serial port. The code is CC-BY-SA 3.0 and unsupported. XMEGA Xprotolab | Development Boards | Gabotronics. USB servo controller. USB-servo-2. (aka RobotController) (a continuation of USB-Servo (aka Mousepointerpointer)) General.
This device was designed to control standard hobby radio control servos via a PCs USB port. Standard RC servos need a power supply of between 4.8 and 6 volts. They also have a Pulse Width Modulation (PWM) signal input which controls the angle of the servo. This device supplies up to 6 such servos with a 5V supply and the PWM signal to control the servo. It takes an external power supply of anywhere between 7 and 30 Volts to power the servos. I built it to control servos (and PWM motor controllers) on my latest robot. The firmware for the AVR microcontroller is written for the AVR-GCC compiler and as such should compile under either Windows or Linux (but is untested under windows so far). The device currently has a Linux application program to control the device. Note that this device has not been tested on a wide range of servos or computers. Building and Installing. 1. 2. Make fuse make flash.
LED Analogue Clock - DIY Electronic Projects. PCB. Download DesignSpark PCB Activate DesignSpark PCB *Free for commercial or non-commercial use, no limitations or licensing. DesignSpark PCB is the world’s most accessible electronics design software. Easy to easy to learn and easy to use, DesignSpark PCB is designed to significantly reduce your concept-to-production time.
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GPS. Microcontrolleurs. Audio. Make A TRON Bag - How to use EL (Electro Luminescent) Wire. A $16 pocket spectrum analyzer. ShmooCon was, once again, a fantastic experience this year. One of many highlights of this year's event for me was hacking on some radio devices with Travis Goodspeed in the hotel bar for hours on end. This included playing with the IM-Me that he brought. As soon as I got home I ordered one. I found mine for $15.99 and free shipping on eBay. Since then I've written custom firmware to turn my IM-Me into a pocket spectrum analyzer, shown here displaying activity of a frequency hopping system at a grocery store.
The only change I've made to the hardware is the addition of a ribbon cable in order to easily connect to a GoodFET for programming, but this is simply creating a permanent connection to the debug contact points that are already exposed in the battery compartment. I've followed Travis's advice on how to develop for the platform. The frequency ranges supported by my device are 281 - 361, 378 - 481, and 749 - 962 MHz. The code is open and available here. Www.qrpbuilder.com/downloads/smd device 041510.pdf. How to use EL (Electro Luminescent) Wire.
Cammy Webcam Control for the Living Room - Pan Tilt. Now Available Cammy v.1.0 kits - Click Here Cammy v.1.0 Living Room Webcam Tracking It wasn’t long ago that my wife and I had our first child and if you have any kids you probably know the excitement of playing, teaching, changing diapers, staying up late at night and all those great memories. For us, my daughter's “Papa” lived on the other side of the country so he didn’t get to see her often; although, he came out whenever he could. To help keep Lucy, my daughter, and Papa connected on a more regular basis he got us both a webcam. This was amazing. Aside from the servos, this project barely costs over $10, and you can use any remote that has Sony code. First, here’s a list of all the components you will need to build this out. Also not shown is an 8 pin dip socket so you can take out the Picaxe chip, a 4.7K resistor for the IR Receiver, a project case.1 x 3 pin femal header (optional for ISP).
Schematic & Board Layou t Download the code here Cammy Control.zip Code: Conc lusion: Add comment.
Communication. Fun. World Of Robot - Bienvenue dans le futur. Laser. Inventions électriques : Home. PCB diy. .: robotitaly.NET :. - la community italiana sulla robotica - Powered by vBulletin. Minty Water Valve Controller. The Design For the water valve, I picked the Orbit yard watering valve. It's widely available in home improvement stores, and it is cheap. It has two pins: applying +24v opens the valve, and -24v closes the valve.
It uses a latch solenoid, drawing power only when you open or close it. This makes it very power efficient. To use a single li-poly battery to drive the valve, I needed a voltage booster to raise the 3.6v provided by the battery to 24v momentarily before connecting to the valve solenoid. For this I chose an LT1303 DC/DC step-up converter, but any similar converter will do as well. To program the valve, I use an Arduino pro mini. The wireless module I used is an RF link 434MHz transmitter and receiver from SparkFun. The schematic of the circuit is included below: Parts List Arduino pin 8 and 9 are used to control opening or closing of the solenoid. Both the Arduino and the RF receiver are powered by the 5v output from minty boost. The PCB Assembly Testing Code and Schematic Files.
Technologie : Automatisme et robotique / Picaxe. Rodage des moteurs - Banc de rodage… - Track Racing System. Composant électronique GoTronic : catalogue de composants électroniques et appareils électroniques. ELM - Home Built Laser Projector. Photo 1. X-Y Scan Head I think everybody saw Laser Effects that shows up stages, discos or festivals. There are two categories on the laser effect. One is Beam Effect, it shows the laser beams that flying in the air to the audience. The other is Screen Effect, it shows the laser graphics that drawn on the screen by a moving laser spot. This is a challenging project to build the laser projector with professional grade :-). Inside of the Laser Projector Figure 1. Basically, the laser projectors are used for entertainment industry.
Laser In old days, red He-Ne laser had been used for the laser art, and then white mixed-gas laser which can generate several number of color simultaneously has being used. Blanking/Modulator The blanking mechanism interrupts any unnecessary laser beam. Beam switcher/Effector The beam switcher is a mechanism that feeds a laser beam to the selected effector, and the effector interrupts a laser beam with any optical filter.
X-Y scanner Figure 2. Other Components Results. New Page 1. For you high-voltage minibooster fans out there, here's the one-chip, one battery way to do it. The MAX1044 is a charge pump converter - it uses a capacitor as a "bucket" to pump charge from one place to another. Normally, there is a capacitor connected from pin 2 of the 1044 to pin 4. This capacitor is charged between +9V and ground, and then switched in parallel with a capacitor from pin 5 to ground in a way that makes a negative voltage on the second cap. In this UPverting use, the 1044 still switches pin 2 between +9V and ground just as it would for a voltage inverter.
However, we ignore the pin 4 and 5 connections that would make an inverter from it. Instead, we connect two capacitors and diodes as shown (D1, 2, and C1, 2). The voltage on pin 2 of the 1044 is switched from +9V to ground. There's more. If you build this, you MUST take notice of the voltages on the capacitors. This charge pumping is a very efficient way to convert voltages.
Traité d'électricité et d'électronique pour le radioamateur. Index général du Manuel Internet du radioamateur : tout sur la radio. Cours d'électronique et documentation. Cours d'électronique NUMERIQUE - Pierre Le Bars Traitement du signal - Volume 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 8 fichiers .pdf 131Ko, 373Ko, 66Ko, 197Ko, 65Ko, 52Ko, 224Ko, 112Ko - Jean AuvrayTraitement du signal - Thierry DutoitIntroduction au Traitement de la Parole - fichier .pdf 723Ko - Thierry DutoitIntroduction à l'analyse de Fourier - Ecole polytechnique fédérale de LausanneApplication des séries de Fourier : analyseur de spectre analogique - fichier .pdf 96Ko - G.
CouturierTransformée de Fourier numérique et discrète : applications - fichier .pdf 124Ko - G. CouturierTechniques numériques pour le traitement du signal - Joël Le RouxCours de Traitement du Signal - Analyse les signaux analogiques (Fourier) - Freddy Mudry Instrumentation numérique - Numérisation d'un signal et analyse FFT - fichier .pdf 398Ko - Jean-Baptiste DesmoulinsTraitement du signal, analyse analogique, numérique, échantillonnage - Michel Etique. Lasers for amateurs. Build a 10$ X Y laser scanner ! First version The goal is to build a very low cost X Y scanner for a laser pointer, this X Y scanner must be able, from a PC, to display fixed or animated simple pictures or some characters.
Problem is, of course, to build very fast actuators. Ultra fast galvo are very expensive. Here are the solutions I tested: CD player actuator : I take an old CD player: the lens coil actuator is used to set the distance between focal lens and CD. Then I built 2 low cost 4 bits DAC with 8 resistors : 40 k, 20 k, 10 k, 5 kohms, with an operational amplifier connected to the actuator coil. It works but frequency limit is about 10 Hz and distance between lens must be adjusted depending from distance between scanner and target. Piezo buzzer : I took 2 low cost standard piezo (about 20 mm diameter, 0.3 mm thin metalled piezo disk) and I sold the piezo 2 on the piezo 1.
It works : at 3 m, spot can be moved on a few cm but a lot of inertia. 8 Mirrors drum : Hard disk head actuators : Meet the Arduino WaterValveShield. After finishing the previous minty water valve controller, I decided to make it an Arduino shield. This way, I can easily stack it onto other shields and extend its capability. I also added a few input buttons, and a DS1337 real-time clock, so that it can keep up with accurate time. Now the circuit has become much smaller, so I can't produce it with home-made PCB any more(sadly...).
Instead, I ordered professionally made PCBs from Laen, and here you are, meet the Arduino WaterValveShield! PCB board: Components soldered: Close-up view: Connected to a serial LCD display The schematic: You can download Eagle schematic and PCB design here. Next steps:
Controle via Internet. Aide calcul. Blog -forum. Head mounted display. Serveur web. Robots. Mesure/capteurs. Leds. Arduino. Radio. Tutoriel. Interface utilisateur. BeagleBoard. Prototypage. Alimentation.