Questions tagged [sketch]

A sketch is compiled code that is uploaded to an Arduino board.

Filter by
Sorted by
Tagged with
0
votes
2answers
275 views

What do I do about a compiler error “ variable 'font' must be const”

I am trying to run the test program from Adafruit, with their libraries, for an Arduino controlling a Nokia5110 display and get this error message: Arduino: 1.5.8 (Linux), Board: "Arduino Pro or Pro ...
0
votes
1answer
2k views

Using MMA8451 accelerometer to count steps [duplicate]

I'm trying to use an Adafruit MMA8451 accelerometer to create a pedometer-type device that counts steps. I'd like to initiate a counter that says "if the x-axis readout is > some threshold, add 1 to ...
3
votes
2answers
983 views

What programming practices should be adopted while coding sketches for Arduino?

What are some of the best programming practices that can be adopted while coding sketches for Arduino, so that it uses the least memory and performance should not suffer from memory outage, and still ...
3
votes
2answers
49k views

“stray '/302' in program error” when compiling

For some weird reason, the following code doesn't compile. I get a "stray '\302' in program" error around volatile unsigned int encoderPos = 0;, and I have no idea what the issue is. I've been trying ...
0
votes
1answer
246 views

How to extend my Sketch for Multiple Inputs and Outputs

I am using 4 Push Buttons and 4 leds in my project. Here the sketch is only for one push button and one Led. I want extend my sketch upto 4 push buttons and 4 leds .Please tell what changes I make in ...
-1
votes
1answer
1k views

The Arduino Sketch does not save in Arduino folder location

I have just installed Arduino on Mac OS. The Arduino folder is created under Documents. But whenever I save the sketch it gets stored in some ghost location and gives an error, the same name already ...
0
votes
1answer
2k views

Trying to get my mega 2560 to work for my 3d printer

Trying to pit marlins v2non this board and it gives me an error and I have no idea what to do Arduino: 1.6.10 (Windows 10), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)" Sketch ...
3
votes
2answers
2k views

How can the Arduino check if it is connected to a PC and the PC is on?

I have been searching around the Internet to find if there is a way to check whether an Arduino is connected to a PC or not. For example: if my PC is turned on, the Arduino will listen to any serial ...
0
votes
1answer
104 views

How do I convert a program made on Notepad to my Arduino on Proteus

I had the Arduino IDE but I accidentally deleted it. I have no internet connection, so I could not download it again. I do not currently possess the Arduino hardware itself but I do have Proteus and ...
-1
votes
2answers
211 views

Delay In receiving data when SoftPWMBegin(); is used from SoftPWM.h library

when i use SoftPWMBegin() function in setup there is some delay while receiving data over bluetooth. And if i pressed o and 1 fastly (see in below given code), some time it receives data and sometime ...
0
votes
1answer
675 views

Arduino programming through HC06

My goal is not upload sketch to Arduino Pro mini through bluetooth module HC06. I have made a breadboard version of DTR signal simulator which takes LED status pin as a source. The output from the ...
0
votes
1answer
2k views

Reading an MCP23S17 I/O expander port with the Arduino SPI library

I am trying to read an MCP23S17 I/O expander port B with the Arduino SPI library. The following example is simple as possible, and I still can not get it to work. The setup is an MCP23S17 I/O ...
2
votes
1answer
736 views

Strobe Frequency Calculation, how its done?

I'm using the Arduino sketch for LED stroboscope found here: http://mehax.blogspot.co.uk/2011/02/arduino-stroboscope.html. Also below, I've inserted the loop part where this calculations are made: ...
0
votes
1answer
2k views

How to split a string into substring Arduino

I'm about identify myself stupid, howcome I couldn' t figure out how to split a string into substring using arduino, even after 10 days of searching. The number is fact... So, As Mr.Arduino.cc says: ...
1
vote
3answers
1k views

Why does HC-SR04 return 0s in this sketch

I am building a robot with multiple sensors, abilities etc. Since I had a bug with a HC-SR04 rotated by a servo, I experimented in a different sketch. If the distance is less than 30cm, the servo ...
1
vote
1answer
93 views

HUGE deviation in Sharp IR sensor values if other pins are defined in void setup()

I wrote this code for a project - int sensorpin = A5; int val = 0; double avgval = 0; int E1 = 11; int brake = 12; char data = ' '; void setup() { Serial.begin(115200); pinMode(E1, ...
-1
votes
1answer
748 views

Arduino UNO suddenly stops responding

I wrote this simple script to control a servo over serial comm - #include <Servo.h> Servo steeringServo; char data = ' '; void setup() { steeringServo.attach(9); Serial.begin(115200); } ...
1
vote
1answer
4k views

how to send large strings (> 100 characters) from arduino serial monitor

I am a newbie to arduino programming. I wish to send big strings which are in range of 100 to 1000 characters to my arduino uno. I saw that arduino cannot read more than 63 characters at a time. The ...
0
votes
1answer
160 views

Does serial communication between PC and Arduino has to be in a loop?

I am trying to send a few variables from my python script to my Arduino. I am using pySerial. I am able to send the variables to the Arduino, but my Arduino sketch runs only for a second and then ...
0
votes
1answer
24 views

Sketch not running as expected

I wrote this sketch along with an HC - SR 04 Ultrasonic transducer and a DC motor. Whenever the HC-SR 04 reads any distance less than 15 cm, the motor stops, otherwise it keeps running. The problem ...
-1
votes
2answers
167 views

Ughh… My Arduino Code ain't workin'… And i just couldn't see any problems… Any thoughts?

There's Latest Update! So i'm workin' on a counter just for fun. How it works is when you press BUTTON1 the LED Lights up red, the buzzer beeps and the variable "counter" adds one to itself; After ...
1
vote
2answers
105 views

Can you pass params to an arduino sketch?

I was wondering if there is a way to pass parameters to an arduino sketch at the upload step. Edit: The reason this would be helpful is because I have a bunch of esp8266 units that need to have ...
0
votes
1answer
330 views

Using two ultrasonic sensors together

Using two ultrasonic sensors together, how can I enable one before the other?
2
votes
7answers
1k views

Include Git tag (or SVN revision) in Arduino sketch?

Is there any way to get the current Git tag/commit identifier into an Arduino sketch binary? For normal desktop program development, you can pull some tricks with the Makefile (as pointed out in this ...
0
votes
1answer
893 views

Controlling HC-05 from a sketch

Hi I am making a sketch and circuit with a HC-05 BT receiver to upload sketches via Bluetooth to my Uno. This requires giving AT commands from the sketch. I would like to see the response from the ...
0
votes
1answer
1k views

Arduino OOP and [this] keyword

Lets say I have a sketch called mysketch.ino with these contents: String globalString = "ThisisGlobal"; void setup(){} void loop(){} How can I pass THIS sketch mysketch.ino as an object or its ...
1
vote
0answers
159 views

Running script file/programe on Intel Galileo gen2 [closed]

How do I run a script file/programs like C / python / shell script in an Arduino IDE like how We use System(); Commands like grep, cut, cat works fine but running System("python file.py"); doesn't. ...
0
votes
4answers
7k views

While loop not breaking

I'm trying to build a circuit that buzzes until a button is pressed, or it buzzes 5 times: void alarm() { int AlarmState = 0; //Just to get while loop going int count = 1; while(AlarmState==0) ...
2
votes
2answers
2k views

Upload sketch via Bluetooth using HC-06 module

I'm dealing with an application in which I need to upload sketches remotely to an arduino UNO board. I successufully managed to upload sketches using an HC-06 bluetooth adapter. The only problem is ...
5
votes
2answers
8k views

How to generate true random numbers over Arduino Uno without any external hardware?

Using a 'random' function in sketch gives same pattern of numbers every-time. But, I need to generate different numbers such that any number to repeat itself should have a very less probability.
1
vote
2answers
402 views

Arduino Prototype on Breadboard: “avrdude: stk500_recv(): programmer is not responding” [duplicate]

I have created an arduino prototype using the exact instructions found on this page: https://www.arduino.cc/en/Main/Standalone However, when I plug in the micro USB power supply and try to upload a ...
1
vote
1answer
561 views

How to exclude a ino/pde file from Arduino projects

I would like to be able to exclude from the auto-including process of the current project (without renaming the extension or delete it) a sketch with pde or ino extension that is used in certain ...
-2
votes
1answer
9k views

Problem: “stray '#' in program” [closed]

I got a sketch from the internet (http://www.instructables.com/id/How-to-build-an-8x8x8-LED-cube-and-control-it-with/) for controlling the display of an 8x8x8 LED cube. The program won't compile and ...
0
votes
1answer
87 views

Stuck on uploading sketch via USB 6 pin

I'm just got a Galileo Gen2 and wanted to try a simple blinking-led. The firmware have been updated to 1.0.4. My problem is whenever I try to upload the code I get this error: Sketch uses 83,775 ...
-5
votes
1answer
543 views

String matching serial input (was Code for voice recognition for arduino uno) [duplicate]

#include <SoftwareSerial.h>// import the serial library SoftwareSerial Genotronex(10, 11); // RX, TX int ledpin=13; // led on D13 will show blink on / off int BluetoothData; // the data given ...
0
votes
2answers
1k views

how to count blinking LED flashes using arduino uno boards and LDR?

i want to know code for counting the flashes of LEDs and display no. of flashes in particular time given.by using LDR. basically i tried it with interrupts but i'm not getting it,so please help in ...
-3
votes
1answer
82 views

questions about sketch [closed]

int k ; int q ; int f;//pot void setup() { pinMode(k, OUTPUT); pinMode(q, OUTPUT); pinMode(f, INPUT); } void loop() { zzf(); } void gf() { int a = f;//test the conditions of f and store in ...
3
votes
1answer
1k views

Double ## in macros

I was looking at some macro use in an Arduino code. I believe what this macro does is it expands into a state that basically sets a pin to either input or output, but I'm a little confused about ...
0
votes
2answers
3k views

Using Rx and Tx pins(0 and 1) on Arduino Uno for GSM

I am using a GSM module sim800. My module responds to the output given by my PIR sensor and sends sms according to it. My module has got +5V, GND, Rx and Tx pins. What are the pin connections that I ...
1
vote
2answers
439 views

Can an a Arduino make music or speech without a speaker?

I have an Arduino Leonardo that can turn a relay off and on and the click is audible on the relay -this is simply done by making one of the control wires HIGH in the program code to turn the relay on ...
1
vote
0answers
56 views

How does one build an arduino version of a slime controlled robot? [closed]

Recently robots controlled by the emotions of biological slime have been built. See for example the New scientist article titled robot move by fear of slime mould. The hard part of building an arduino ...
1
vote
1answer
614 views

Problem while writing sketch for GSM module sim800

I wanted to my GSM to recieve SMSs. I have written a sketch for it. But while verifying the sketch an error pops out in this part: if (sms.available()) { sms.remoteNumber(senderNnumber, 20); ...
0
votes
1answer
50 views

Detecting Motion behind a robot

I am building a motion following robot. It has two PIR sensors on the left and right. It has an ultrasonic sensor in the front. When either of the PIR sensors detect motion then it turns to that side. ...
1
vote
1answer
659 views

How to make two wheels turn only for a particular amount of time?

I am trying to make a robot turn (dc motors are being used) back 180 degrees. So I used an l289n for it and made one wheel turn clockwise and vice-versa. But as I wan't it to make only a 180 degrees ...
0
votes
1answer
5k views

What if Ultrasonic sensor doesn't detect object?

I am trying to write a sketch where a function will only be triggered when the ultrasound doesn't return back. Thus when the echo pin is checked after 1 second after the trigger pin was written high, ...
2
votes
4answers
1k views

Take an Arduino or Teensy prototype to Mass production - Loading software onto microcontroller

I am developing an educational product that I would like to mass produce. I am not sure of the quantity yet, but I imagine we will make a few hundred PCBs at least to begin I spoke with an electrical ...
0
votes
1answer
227 views

Details on OV7670

I am thinking of working on a project based on a camera module OV7670. I am making a security system using an arduino where detected motion (I am also using a PIR sensor) will trigger the camera ...
0
votes
1answer
210 views

How to upload Arduino sketches to Atmel chips

I am new in this Arduino coding world and I was trying to make a project. I normally used Arduino Unos all the time, but I was facing a problem and that is that the Arduino Uno has only 13 digital ...
0
votes
1answer
480 views

Arduino compiler uploading last saved version of sketch, not current

Is this an issue or a defined behavior? I am using Arduino IDE 1.6.6 Sometimes I made changes in code, and immediately upload them to the Arduino board. And many times issues already fixed are ...
0
votes
2answers
1k views

uint8_t etc as color variable

I am very new to coding and I am attempting to teach myself the best I can. I have no prior knowledge of coding and am filling in the blanks via YouTube and forums alike. One place I keep getting ...