» Arduino music from a midi file jarv.org Recently I wrote an Arduino / AVR lib and python script so that I could take three parts from a midi file and playing them simultaneously using the three Arduino timers. There are already plenty of other ways to generating tones using an Arduino. You can play music from a midi input there is a library for playing PCM audio and similar projects for playing music using all three Arduino timers simultaneously. I’ve also played around with AVR sound generation before in previous posts. What you need to get started How music is generated using an Arduino On the Arduino and in general on the atmega168 and 328 there are 3 timers that operate independently of each other in hardware. Here are the match values that correspond to different pre-scalers and their corresponding piano notes at 16MHz. Let’s start making music.. Copy playtune.cpp and playtune.h to a “PlayTune” directory in the libraries folder of your Arduino install. So that was fun (but boring).. SMB theme in Musescore For example:
Grbl - ShapeOko Overview (from Grbl is a no-compromise, high performance, low cost alternative to parallel-port-based motion control for CNC milling. It will run on a vanilla Arduino (Duemillanove/Uno) as long as it sports an Atmega 328. The controller is written in highly optimized C utilizing every clever feature of the AVR-chips to achieve precise timing and asynchronous operation. It is able to maintain more than 30kHz of stable, jitter free control pulses. It accepts standards-compliant G-code and has been tested with the output of several CAM tools with no problems. Grbl includes full acceleration management with look ahead. Important note for Atmega 168 users: Grbl used to be compatible with both the older Ardunios running atmega 168 and the newer with 328p. Note for users upgrading from 0.51 to 0.6: The new version has new and improved default pin-out. The project was initially inspired by the Arduino GCode Interpreter by Mike Ellery Downloading General Hex Files: Linux
Master a perfect inline wire splice everytime In this instructable i will teach you how to make a perfect inline wire splice, every time What is an inline splice? Well, if you work with any type of electrical wiring, and need to join 2 pieces of wire you have 2 choices, pigtail or inline Pigtail splices are when you hold the 2 pieces of wire, one end going up, the other going down, and twist their stripped ends together. The issue with pigtails are... 1) They are ugly 2) They redirect the wire 180 degrees, so going from point A to B requires a sharp bend 3) After making that sharp bend you have this chunk of pigtailed wire flopping about, usually with a nice wad of gooey black tape, and sometimes a zip tie to act as a strain control 4) Since the connection is 180 degrees (or going the totally opposite direction) without some form of strain control, all it takes is a stout yank to sheer the connection (even with solder), altho honestly this is an extreme con The pro's of pigtail's are1) they are "easy"
3 Axis Arduino Based CNC Controller I've been playing with different CNC designs and Stepper controllers for many years now. I started building CNC machines long ago. My first inspiration came from Bruce Shapiro’s eggbot. I tried a few variations of it and even the board from evil mad scientist. Recently a project named GRBL came along that caught my eye. It used an Arduino to do the G-Code Interpretation. The latest generation controllers I have built all use the same simple and cheap IC's. I've used the cheapest parts I could find and still got great results with modest fine tuning. Contrôleur de moteur pas à pas Ce circuit Open Source "EasyDriver", compatible Arduino permet de commander les moteurs pas à pas bipolaire jusqu'à 30V et 750mA par phase. Une sortie régulée 5V est intégrée (tension d'entrée 6-30V). Basé sur la puce Allegro A3967, il utilise un mode micro-stepping de 8 pas (8 pas sont nécessaires avec EasyDriver pour tourner un moteur d'1 seul pas). Exemple : un moteur de 200 pas / révolution contrôlé par le circuit Easy Driver sera au final commandé avec 8X200 = 1600 pas pour une révolution. Notes : le design de cette platine Open Source a été versé dans le domaine public (Creative Commons Attribution 3.0 United States License). Documentation : Téléchargements : Il n'y a pour le moment aucun commentaire.
HC 06 Serie Wireless Bluetooth Emetteur Récepteur RF 4 PIN Module Pour Arduino T j h min s jour heure heures Livraison gratuite Voir la description de l'objet Environ : (Saisissez ##1## ou plus) (Saisissez une valeur supérieure à ##1##) Votre enchère maximum : Un autre membre a surenchéri. Un autre membre a surenchéri en plaçant une enchère automatique. Vous êtes le meilleur enchérisseur pour cet objet ! Vous êtes le premier enchérisseur pour cet objet ! Vous êtes le meilleur enchérisseur pour cet objet, mais un autre membre peut encore surenchérir. Cette vente est presque terminée et vous êtes actuellement le meilleur enchérisseur. Vous êtes le meilleur enchérisseur pour cet objet, mais le prix de réserve n'a pas été atteint. Un autre membre a surenchéri. Vous pouvez encore remporter l'objet ! Votre enchère est inférieure à l'enchère maximum d'un autre membre. Votre enchère a été rejetée, car elle est identique à celle d'un autre membre. Essayez d'augmenter votre enchère maximum. Vous êtes le meilleur enchérisseur! Vous êtes le premier enchérisseur. Votre enchère maximum est désormais de
Sending Multibyte Numbers from ActionScript to Arduino at Mike Chambers If you follow me on twitter, then you have probably noticed that I have been learning about Flash, physical computing and electronics lately. I started out working with Phidgets, and have recently begun working with the Arduino (Ill write up Flash / Arduino getting started tutorial shortly). I am currently working on a project where I need to send data from Flash to the Arduino, and quickly discovered that it is not as easy as I thought it would be. In this post, I will show an example of how to send multibyte Numbers from ActionScript to Arduino. <! When you send data to Arduino over the Serial port, Arduino reads that data byte by byte. and then read the same number in Arduino by reading the byte: value = Serial.read();Serial.println(value, DEC); //will send 127 However, if you need to send a number larger than 127, then things get a bit tricky. So, after much searching, I found a post on the Arduino forums that shows how to build a float from a byte array using a union.
Online Materials Information Resource - MatWeb The DFRobot LCD4884 LCD Shield Learn how to use the DFRobot LCD4884 Arduino LCD shield. Updated 19/03/2013 This needs to be updated for use with Arduino IDE v1.0.1 and greater… however we no longer have a shield to test it. This article is my response to a request on how to use the LCD4884 LCD shield from DFRobot in China. From a hardware perspective the LCD has a resolution of 84 by 48 pixels, with a blue back light. Along the bottom-left of the shield are solder pads for some other I/O options, however I couldn’t find any documentation on how these are used. Controlling the backlight is very easy, just use: digitalWrite(7, HIGH/LOW) to turn it on and off. pinMode(7, OUTPUT) in void setup();. Reading the joystick position is accomplished via analogRead(0);. Up – 505Down – 0Left – 740Right – 330pressed in – 144Idle (no action) – 1023 By using analogRead(0) and if… statements you can read the joystick in a simple way. in void setup() to create an instance of the LCD, and at the start of your sketch to enable the library.
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Digital camera control using Arduino USB Host Shield. Part 1 – basics. Arduino taking picture of itself I’m starting new series of articles describing exciting field of digital camera control. In modern cameras, USB port can be used not only for transferring images to a PC, but also for sending control commands to the camera. It is often possible to send commands which “press” the shutter button, modify shutter and aperture values, some cameras are even capable of doing focus control. At the same time, new shooting techniques, such as HDR and stacked focus, require that a photographer makes several shots, slightly modifying one or several shooting parameters from shot to shot. I am announcing new code developed for Arduino USB Host shield which implements digital camera control functions via PTP. Digital camera as USB peripheral is much more complex and less standard than a keyboard. There are 3 specifications describing USB digital camera works. USB specification defines a class called “Still Image Capture Device”. Let’s talk briefly about PTP protocol.