A library is a file that can be included into the code to add new instructions by combining many existing instructions and creating one easy to use instruction to call.

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Is there a lean or modular SD library?

I'm using the SD library to perform two simple tasks. reading a configuration file writing a logfile I don't want to use subdirectories and can live with only two filenames. However, after ...
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28 views

Does anyone know a library that can emulate 3 throttles?

There is this library, but it emulates only one throttle and one rudder. The X Y Z axis don't work because they are addressed from -127 to 127 and I need 0 to 255. I just need one more throttle axis. ...
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1answer
18 views

Basic usage of Nick Gammon's Regexp library

I am using the following code modified from the examples. I get the count of matches but the actual value is not displayed #include <Regexp.h> void setup() { Serial.begin(115200); ...
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1answer
154 views

WARNING: Category '' in library *any library* is not valid. Setting to 'Uncategorized'

I'm using Ubuntu 14.04 with arduino Galileo and the newest arduino IDE from arduino.cc and every time I compile I got this warnings with any library in place of EEPROM, SD, Wire, Wifi and a lot of ...
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63 views

Software Serial library not working in Arduino

In an Arduino project I am not able to compile some code that uses the SoftwareSerial library. I get the following compilation errors. How do I correct the code? C:\Program Files ...
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44 views

Creating a library for attiny85 out of working program

Apologies if this is the wrong sub-forum, the involvement of ATTiny and arduino places this into a strange category. Please correct me if I should post elsewhere. It is important for this to be a ...
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14 views

How to drive a 4bit GLCD?

i've got a huge (about 6 x 23 cm) graphics LCD. I used my multimeter and the datasheet the LCD driver chips (6 x KS0104 and 2 x KS0103) to get the pinout. It has the following pins: GND, M, FCS (not ...
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1answer
66 views

NTP Client Library. Set sync provider pointing to public class function. Possible?

I am trying to develop a NTP client library for ESP8266/Arduino to make adding NTP sync an easier task. Basically, I've thought about a constructor as NTPClient(String host, int interval); and a ...
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40 views

How to add .h file to ino

I'm using the arduino along with a Raspberry pi. For this, I'm using ino to compile sketches through the command line. I now want to use the adafruit motor shield along with my arduino. This requires ...
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1answer
26 views

Can I increase the 10 event limit in Simon Monk's Timer library?

On Dr. Monk's library page here, he states: "You can attach up to 10 events to a timer." I am wondering if this is a hardware limit, or if it was an arbitrary number he chose for his library. In ...
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59 views

Migrating from ATMega2560 to ARM based — Teensy vs Due?

I currently have a project that is working on an AtMega2560 platform (heavily derived off the Arduino Mega). It mainly involves a GPS module and SD card. Going forward I am looking to add a few more ...
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2answers
33 views

How to install a library for a single project

How do you install an Arduino library so it's only available for a specific project? Say I have a codebase located at /myproject, and I want to install libraries at /myproject/lib/somelib. I can't ...
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2answers
90 views

Problems with Draw Loop using u8glib

I am using an Arduino Mega and a 12864ZW LCD with the u8glib library and the following code to draw to the LCD: U8GLIB_ST7920_128X64 Display(LCD_E_PIN, LCD_RW_PIN, LCD_RS_PIN, U8G_PIN_NONE); void ...
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0answers
17 views

Modbus loopback test

I am using Simplemodbus library with arduino Uno board. I have used below code with 5 device with different slave ID. The Indivually these slaves are working fine. Now I am trying to connect it in ...
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2answers
170 views

Sending and receiving custom messages with Ardulink

I am sending custom code to Arduino with this ardulink command: { ArduinoControl.link.sendCustomMessage("oled"); } Code from standard Ardulink sketch CustomMessagesChipKit.ino: { if ...
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1answer
60 views

Why can't I include a library in another one?

I am trying to create a new library that uses another existing library. The original library declares a way to create an object called Multiserial that can be created in the main file and the program ...
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2answers
81 views

Serial Communication Problem Using Eclipse

Please help I have created an Arduino program that will switch the pins when I send a char. It works fine with serial monitor, but the problems come when I send chars with Eclipse using RXTX serial ...
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1answer
579 views

ESP8266 & websockets

At the moment, I'm using various operating systems and devices like the Raspberry pi to control lights and other stuff over websockets. I use websockets since they added the support on Chrome. I write ...
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2answers
38 views

Is it possible to package a sketch with dependent libraries for cross-platform compatibility?

I have a complex sketch that I spent many weeks working on, which I am backing up frequently because I'm afraid of losing any of my progress. I'm wondering if it's common practice to make a ...
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1answer
38 views

Find which WiFi device quiries a network?

1) What additional hardware sensors will be required for it? 2) What software components one shall develop to capture devices broadcasted network names? Looking at WiFi library can not get what one ...
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1answer
27 views

Using a library of sleeping with a combination of the WD and a physical INTERRUPT

I would like to use one of the nice libraries like : JEELIB ENERLIB SLEEP_N0M1 NARCOLEPTIC ADAFRUITSLEEPY_DOG LOW_POWER_MASTER But to use a X second interval of sleeping and in the same ...
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32 views

Teensy and MS5803 sensor

I'm trying to use the MS5803 pressure sensor with a Teensy 3.2. Compiling the Sparkfun, or other, libraries, however, results in no output. Can you provide guidance on how to modify the libraries to ...
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1answer
46 views

Can I access individual pixels on my 16x2 LCD display

I have a generic 16x2 LCD display connected to my Arduino. I can use the standard LCD library to display characters, but are there way to turn on and of individual pixels?
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1answer
26 views

Problem assign float to an embed class within the Linked-list libary

I have successfully implemented some code which uses a linked-list. Everything is working, except assigning a value to a float within the embeded class. When I run the code below, I get the expected ...
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28 views

Is there any way to import libcoap into Arduino project?

I am currently playing with libcoap (https://libcoap.net) client-server architecture. I need directions importing libcoap into Arduino project. Or any other way to implement CoAP (constrained ...
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3answers
37 views

Problems with linking a library with a c program in linux

I am totally new to C and arduino. I want to run serial commands from a Bealgebone to a 4Dsystems display. Therefore I copied the c library found here into a directory and created a test program ...
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39 views

Modbus RS485 Comms Export Meter

I am attempting to communicate with an ABB electrical export meter with an Arduino Mega2560. I am using the SimpleModbusMaster library as found here : ...
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2answers
112 views

BH1750 Light sensor always giving output as 54612lx

urgently need some inputs, Connection: VCC-5v GND-GND SCL-SCL(analog pin 5) SDA-SDA(analog pin 4) ADD-NC or GND Code pasted below used library from GIT : https://github.com/claws/BH1750 #include ...
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48 views

AcceleroMMA7361 does not have a name type

I just imported this library and i can't figure out what's causing the problem! Here is the error This report would have more information with "Show verbose output during compilation" ...
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1answer
75 views

Error in Arduino Library file

I am working on a project which includes Arduino and a fingerprint scanner. It is completely based on embedded system. But then, I have downloaded a library for the fingerprint scanner. When I run the ...
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1answer
34 views

A question about including libraries

I'm a beginner in creating my own libraries so the following might contain some stupid stuff. Anyways, I'm using NRF24L01+ modules for wireless communication and I've been utilizing the magnificent ...
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0answers
84 views

Decoding IR codes with IR sensor rather than IR receiver module

I'm looking for a library to decode RAW IR signals from an IR sensor (looks like a black LED, two legged) rather than an IR module (3 legged, rated for a particular frequency - such as 38kHz). Is ...
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1answer
39 views

Querying streaming sensor data on the Arduino board

I am new to Arduino and this forum, so please forgive me if I am asking something really trivial and stupid. I have an Ardino board which collects sensor readings from a mpu6050 ...
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1answer
110 views

Integrating two Arduino Ethernet libraries in one sketch

I am trying to integrate two different Arduino Ethernet libraries, EtherShield and UIPEthernet in one sketch. EtherShield library is used to control LEDs via Android mobile application. While ...
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2answers
35 views

Can I automatically loop inside a library?

I want to write a little library; the unlibrarized functionality does: checking in every loop-cycle some inputs, doing some calculations with it and finally setting a boolean to either true or false. ...
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2answers
57 views

Arduino IDE not handling library code correctly?

The author of the PinChangeInt library and the EnableInterrupt library states at github: When the PinChangeInt was in a .h and .cpp file, the Arduino IDE tried to compile it twice. I have a ...
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231 views

NodeMCU build ESP8266

Anybody have a build of the NodeMCU firmware with the g8b SH1106 driver enabled? I can't find one anywhere and can't get the firmware to compile myself. (I know this isn't Arduino related per say but ...
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1answer
37 views

How to change the topic_name string to PROGMEM?

I'm trying to save SRAM on my Arduino pro mini by going through some libraries. I've noticed that to use my Arduino as a ROS node the library stores the topic name and message type as constants. ...
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1answer
110 views

undefined reference to `PPMintIn::PPMintIn(int)'

I am making a new library that will utilize PinChangeInt's library. My intention is to further simplify repetitive code by creating a library. (This is to allow for multiple PPM channels without ...
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2answers
170 views

Pass a member function pointer to a method of a foreign class (EDB Lib)

I'm currently working on my own arduino library and I'm becoming exasperated with the following problem: I want to store data with the extended database library ...
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3answers
230 views

How to develop or edit an Arduino library?

I'm not sure if I should split this question in two. I had to edit some libraries and I plan to make some myself but didn't try yet. Editing a library seems very laborious comared to editing a ...
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1answer
57 views

Is the Arduino library so slow?

I have a plan to operate 5MP camera module with the arduino Due. But I wonder if I can use the arduino libraries that include digitalRead, digitalWrite and so on. But some people said that it is a bad ...
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1answer
91 views

CC3000 Wifi: Enable Debug

I am using the Adafruit_CC3000_Library. I've followed the WebClient.ino example sketch. I'm able to make 300-400 HTTP requests, but eventually the connection will hang. Thus, I'd like to debug. ...
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3answers
258 views

Adafruit DHT22 Library + Arduino Due not compiling?

i recently purchased a DHT22's and tried to get it to work using Adafruit's DHT library on Github. When i compile it with a Arduino DUE, it gives me the following error: ...
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2answers
135 views

Existence of a non blocking and task yield framework for Arduino programming

I've been playing around with Arduino and understand that the standard runtime provides a single thread essentially. I was wondering if it is possible to write a thin layer (library) that allows one ...
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61 views

Two identical functions, one works one doesn't. why?

I'm cross-posting this with the Arduino exchange because I'm not sure if it's a problem with my C or something else entirely. I'm attempting to communicate over WiFi using the process library (Part ...
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1answer
42 views

Pass Several Values to Library

Unfortunately I have yet to learn C++ though I have experience with C# and other non-C languages. After trying for the past 5 hours to pick up what I can from Stack and other sites I haven't found a ...
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1answer
369 views

Updating MAX7456 library to work with Arduino 1.6.6

I've got this library for communicating with the MAX7456 chip. The library is abandoned and the only one I found that actually works, so I'd really like to use it. It compiles fine with Arduino ...
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1answer
117 views

Using union to return a range of bits from a data frame: wrong approach?

I'm working on an adaptation of Jason Leyrer's Guitar Hero Library for Arduino. My version is for a DJ Hero controller, and I've also borrowed some code from this Arduino forum thread: topic=120527 ...
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110 views

Arduino can't find my custom library: fatal error, Motor.h not found etc

I have been working on a project building a robot and using my own custom-built libraries to control it. However after converting all my old code into libraries Arduino can't find them. Everything ...