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This very simple sketch scans the I2C-bus for devices. If a device is found, it is reported to the Arduino serial monitor. This sketch is the first step to get the I2C communication working. The sketch shows the 7-bit addresses of the found devices as hexadecimal values. That value can be used for the "Wire.begin" function which uses the 7-bit address. Some datasheets use the 8-bit address and som

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post MPU-6050 Accelerometer + Gyro Navigation Introduction Reading raw values is easy, the rest is not Code Multiple sensors Breakout boards Measurements Short example sketch Example sketch (base code) Introduction The InvenSense MPU-6050 sensor contains a MEMS accelerometer and a MEMS gyro in a s

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Overview While stdio and hence printf() isn't built into the Arduino environment, there are several ways to get xxprintf() type output support in the Arduino environment. Each way has its pluses and minuses. The alternatives include: adding printf() support to the Print class creating a separ

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Arduino library to use timer 2 with a configurable resolution. Based on MsTimer2 by Javier Valencia. It's called FlexiTimer2 because it's based on MsTimer2, but offers more flexibility, since it has a configurable timer resolution. It works on: ATmega1280 (thanks to Manuel Negri). ATmega328 (

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Dallas Semiconductor's 1-Wire Protocol Latest version The latest version of the library is on Paul Stoffregen's site. The rest of this page is a work in progress. OneWire is currently maintained by Paul Stoffregen. If you find a bug or have an improvement (to the library), email paul at pjrc

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post The Arduino Playground Welcome to the Arduino Playground, a wiki where all the users of Arduino can contribute and benefit from their collective research. This is the place to post and share your own code, circuit diagrams, tutorials, DIY instructions, tips and tricks, and after all the hard

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Interfacing... Arduino and Linux TTY Elliott Kipp/edk4971 posted in the forums on how to configure a Linux TTY with the correct parity, baud, etc to talk to Arduino. Repeating it here: stty -F /dev/ttyUSB0 cs8 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -ec

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Arduino Time library The Time library adds timekeeping functionality to Arduino with or without external timekeeping hardware. It allows a sketch to get the time and date as: second, minute, hour, day, month and year. It also provides time as a standard C time_t so elapsed times can be easily

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post :: Arduino + Cocoa/Objective-C :: Three methods of interfacing with Objective C are presented here. Methods Popen() - The least flexible way to interface with an arduino, although if you are only sending data it is also the easiest. download available Just use POSIX C - Objective C is still j

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post The Metro library facilitates the implementation of recurring timed events like: blinking LEDs servo motor control Serial communication Download the latest version from github : https://github.com/thomasfredericks/Metro-Arduino-Wiring https://github.com/thomasfredericks/Metro-Arduino-Wiring/a

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Adjusting PWM Frequencies For further knowledge on Arduino PWM frequencies refer to the ATMega Complete Datasheet and this Arduino.cc page "Secrets of Arduino PWM" http://arduino.cc/en/Tutorial/SecretsOfArduinoPWM Regarding Arduino Mega This article is not fully compatible to Arduino Mega (or

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Install Arduino on Ubuntu Linux Please note that the informations below could be outdated. All the latest and updated instructions can be found here: https://www.arduino.cc/en/Guide/Linux Table of Contents Ubuntu 12.04 (Precise Pangolin) and newer Ubuntu 10.10 (Maverick Meerkat) and newer Ubu

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Sleep. How to let your Arduino go to sleep and wake up on an external event. Preface Sleep is commonly used to save power on Arduino boards. For some Arduino variants, however, there is not much benefit. For example, the Arduino serial and USB boards use a 7805 type of power regulator, which

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Arduino and Python Talking to Arduino over a serial interface is pretty trivial in Python. On Unix-like systems you can read and write to the serial device as if it were a file, but there is also a wrapper library called pySerial that works well across all operating systems. After installing

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Interfacing with Hardware These topics cover the hardware and software setup required to connect an Arduino device with a variety of electronic parts, chips and devices. A related topic not covered under this section is the shield, boards that plug directly into an Arduino's pin layout. Infor

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post MsTimer2 is a small and very easy to use library to interface Timer2 with humans. It's called MsTimer2 because it "hardcodes" a resolution of 1 millisecond on timer2. Updated again: a new version is available here UPDATED: works on ATmega1280 (thanks to Manuel Negri). works on ATmega328 (than

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post 8-bit, 8000 Hz audio playback on a PC speaker. Main program /* * speaker_pcm * * Plays 8-bit PCM audio on pin 11 using pulse-width modulation (PWM). * For Arduino with Atmega168 at 16 MHz. * * Uses two timers. The first changes the sample value 8000 times a second. * The second holds pin 11 h

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Arduino PID Library by Brett Beauregard contact: br3ttb@gmail.com INSTALL The PID Library is available in the Arduino IDE Library Manager DOWNLOADS PID Library Latest version on GitHub: GitHub PID Front-End using Processing.org Latest version: v0.3 THE BASICS What Is PID? From Wikipedia: "A P

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Twitter Library for Arduino Author: NeoCat Be advised that this library does not tweet directly from your Arduino. It sends your tweets to a website, which then tweets it from there. However, username/password will NOT be sent to the site by OAuth mechanism. You can invalidate the OAuth token

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post PS2 mouse interface for Arduino Update 2 May 2014 Modified mouse.txt setup, to accommodate for Intellimouse vertical wheel (scroll) Update 18 Jul 2009 Added ps2dev library for being a ps2 device Update 12 Oct 2008 New version of the library updated that works with Arduino 0012. Update 29 Sept

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Overview The Arduino IDE itself is written in Java, and it can communicate to the serial port via the RXTX Java library. The RXTX library is unstable and not recommended for use. The jSerialComm library is a much better alternative (StackOverflow post). The RXTX library is very similar to the

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Installing Arduino on Linux WARNING!!! If you use sudo apt-get install arduino you will probably get an extremely outdated and possibly non-standard version of the Arduino IDE. Official Linux 32 bit, 64 bit, and ARM builds are available for download here: https://www.arduino.cc/en/Main/Softwa

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post So you have found need for disabling the auto reset? So that the arduino does not reset when establishing a connection. Here are some solutions. Note: This does NOT apply to the new Arduino Leonardo that uses USB and serial differently. The Leonardo does not auto-reset, however, it is difficu

Arduino Playground is read-only starting December 31st, 2018. For more info please look at this Forum Post Arduino + MAX/MSP Quick links: Maxuino; SimpleMessageSystem; Arduino2Max; Firmata; ArduinoMax_InOut_forDummies Max Communication Examples These examples are written to interface with the communication examples in Arduino 0008. MaxCommunicationExamples ---- Maxuino Maxuino is an actively maint