background preloader

Tutorials / Tutorials

Tutorials / Tutorials
Related:  Hardware Hacks

microcontrollers reference Main Page - Firmata Embedded Lab Diavolino Diavolino ("little devil") is a low-cost, easy to build Arduino-compatible development board. Diavolino has the form factor of an Arduino Duemilanove or Arduino Pro, but with nicely rounded corners and a striking appearance. It's a low-profile through-hole version, with a simplified design. It's based on a ATmega328P microcontroller, and comes pre-flashed with the Arduino bootloader. Open source design, with bare basics hardware. Diavolino is sold as an easy to assemble "through hole" soldering kit [?]. To load Arduino sketches onto a Diavolino, you'll need an FTDI Interface, such as the FTDI Friend. Here's what you'll find on the Diavolino circuit board: ATmega328P microcontroller, with Arduino bootloaderGenuine 16 MHz crystal oscillator (better grade, 20 ppm)3 mm diffused red LED (naturally!) Here's what you won't find on Diavolino: The USB interface chip-- again, that's why you need the cable.Advanced power management. Powering Diavolino Kit configurations Additional resources

FabScan: The 100-Euro 3D Laser – open-source, do-it-yourself 3D laser scanner July 20, 2013 AT 2:55 am FabScan: The 100-Euro 3D Laser. FabScan is an open-source, do-it-yourself 3D laser scanner. It started out as a Bachelor’s thesis by Francis Engelmann, supervised by René Bohne. Learn more. Related No comments yet. Sorry, the comment form is closed at this time. interfaces:introduction · SensorWiki.org Sensors typically need to be interfaced to the computer in one way or another. It is possible to buy sensor interfaces, and it also possible to build them yourself. This page gives an overview of both. Tutorials Commercially available sensor interfaces Commercially available sensor interfaces intended for musical and artistic purposes generally use either MIDI or Open Sound Control (OSC) to communicate with a computer (see table below). Popular MIDI devices (e.g. The shortcomings of MIDI in terms of resolution and speed, make OSC based sensor interfaces (e.g. There are even devices that use digital audio for communication (e.g. Finally, a number of newer devices use serial ports for communication (via USB or Bluetooth), or straight USB/HID. Table of sensor interfaces Comparison of a number of popular sensor interfaces for musical and artistic purposes, ordered by their selling price.

Amarino - "Android meets Arduino" - Home Blondihacks Pushing Johnny’s secret buttons. Every pinball machine from about 1980 onwards (the solid-state era) has a diagnostic control panel inside it. This is a set of buttons used to control service menus for running game tests, setting prices, gathering gameplay statistics, modifying game rules, and anything else an operator or technician might have needed to do. Ironically, Johnny’s diagnostic panel was itself in a very sorry state. This thing is loose, the button labels are wrong, the harness is routed poorly, and it’s generally annoying to use. The root cause of most of these issues is that the bracket holding the buttons is actually the wrong one. Conveniently, the correct bracket is still available from Marco. If it was as easy as bolting on a shiny new bracket, there wouldn’t be a Blondihacks post about it, so regular readers know things are about to get messy. I took lots of pictures like this, so the artwork could be scanned, sized, cleaned up, and reprinted if needed.

SCIENCES POUR TOUS micropas pour monture équatoriale Gestion de moteur pas à pas à micropas pour suivi équatorial avec une EPROM (difficulté: *** moyen) Pour le suivi équatorial d'un télescope, on utilise généralement un moteur pas à pas qui permet une grande précision de vitesse. Les systèmes à moteurs continu + génératrice tachymétrique sont compliqués et coûteux. Malheureusement, avec un moteur pas à pas, pour passer d'un pas à l'autre, si on envoie des impulsions, le moteur à tendance à vibrer. Un moteur pas à pas: On peut, bien sûr, monter le moteur avec des silent-blocs sur l'axe ou sur sa fixation. Mais il est recommandé de s'attaquer à la source du problème: les impulsions. Au lieu d'envoyer des impulsions dans le moteur, il faudrait injecter des courants sinus/cosinus. Comment envoyer des courants sinus/cosinus? La stabilité des oscillateurs classiques n'est pas suffisante pour un suivi correct. Ici, nous utilisons le PWM: Pulse Width Modulation: modulation de largeur d'impulsion. Réalisation: Q1 fournit les PWM cosinus Exemple de calcul:

Related:  Electronicamaking