A sketch is compiled code that is uploaded to an Arduino board.
-1
votes
2answers
21 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
28 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
0answers
23 views
Trouble uploading code due to 'lack of storage'(?)
I've recently bought a Arduino Uno (so I'm a beginner with electronics :$) but I have trouble uploading any code using IDE. It keeps saying there's no storage and that it can't find the library. Does ...
0
votes
1answer
24 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
31 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
53 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
140 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
32 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, ...
0
votes
0answers
27 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);
}
...
0
votes
1answer
67 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
54 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
0answers
39 views
Arduino on a breadboard, single bootloader/uploader circuit possible?
I would like to know if my intuition is correct that two circuits can be tied to the same ATMega, provided they don't use the same pins. I would like to make a single shield with a dip socket which ...
0
votes
1answer
15 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
134 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 ...
0
votes
0answers
71 views
How to Upload Arduino Sketch via bluetooth BLE
I want to upload Arduino hex file through BLE HM-11 from Android phone.
The details of my android board are given below-
I am using a customize Arduino board with 8 Mhz internal clock.I have ...
1
vote
2answers
57 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
0answers
23 views
How to control motors without conflict from joysticks?
I am building an ROV that will control motors with 3 2-axis joysticks. I have four horizontal motors that are vectored in this configuration in order to allow for more axes of motion such as crab and ...
0
votes
1answer
23 views
Using two ultrasonic sensors together
Using two ultrasonic sensors together, how can I enable one before the other?
0
votes
2answers
49 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
68 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
90 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
44 views
Running script file/programe on Intel Galileo gen2
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
2answers
144 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)
...
0
votes
1answer
329 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 ...
2
votes
2answers
747 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
90 views
Arduino Prototype on Breadboard: “avrdude: stk500_recv(): programmer is not responding”
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
54 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
382 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
34 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 ...
-4
votes
1answer
71 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
167 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
78 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 ...
4
votes
1answer
44 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
165 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 ...
0
votes
0answers
307 views
Sending sms through GSM module sim800
I want to send an sms through my gsm module.I am using the basic GSM.h library included with the IDE. I wanted for the sms to be sent only when I receive output from my PIR sensors. I have created a ...
1
vote
2answers
181 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
36 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
97 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
23 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
37 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
175 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
232 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
48 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
140 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
64 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
109 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 ...
0
votes
2answers
156 views
Clearing SRAM in loop()
Very broad question here. I don't know exactly what the problem is but I'll edit this post as we narrow down the possibilities.
I think I'm running into memory constraints.
I'm running a sketch ...
0
votes
1answer
26 views
How to extract the last byte out of an IP adress
Newbie question:
I need to pass the last byte of a local IP as a parameter.
Eg.: when Ethernet.localIP() returns 192.168.0.100,
I need to extract the 100 and put it in a char array or string.
Anyone ...
2
votes
4answers
1k views
What is better: one sprintf() or multiple strcat() and itoa()?
I was creating Arduino function which sends two int and additional chars between them and at the beginning and end of char array - then print that array to the serial port in almost real time. (For ...
3
votes
1answer
88 views
What is Arduino Uno default sketch?
When I bought my aruino uno and connected it to my computer, I tried to make the simple blink circuit(before programming arduino) and suddenly the led started blinking.
Is the blink example is the ...
