Questions tagged [software]

Use this tag for questions relating to computer software used for interaction with the Arduino. For example, you could use this tag for questions about programming environments, or you could use it for PC/Arduino communication.

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22
votes
2answers
64k views

Reset an Arduino Uno in code

Is it possible to reset an Arduino (i.e., to reboot it) from code (i.e from the sketch itself)? I know that is possible with a special circuit but is there a chance to make it just with code? Below ...
14
votes
5answers
6k views

Programming options other than C++

Can I program my Arduino using any programming language other than C++? If so, which programming languages? What software would I need for compiling and loading my code onto the Arduino?
13
votes
2answers
1k views

Assembly on the Arduino: IO registers

Question: What registers do I use to access the IO on the Arduino Uno when I am using assembly for programming? Background: I was interested in practicing my assembly language skills on the Arduino (...
10
votes
3answers
15k views

How to call C functions from Arduino sketch?

I would like to know if there is a way to call functions that are contained within C files using an Arduino sketch? My C file declares and defines a function. To save putting the messy function ...
7
votes
1answer
14k views

How to build (concat) a string with big numbers

new to arduino I'm struggling with what sounds like fairly n00b problem... I've wired up a adafruit GPS-board to my Arduino and it is working as it spits out GPS data to the serial port with Serial....
6
votes
1answer
4k views

How to use RS-232 sheild as software serial port?

I would like to be able to use a USB port at the same time as an RS-232 port with my Arduino Uno board. I unwittingly bought a shield that (I think?) overrides the USB port when it is mounted to the ...
5
votes
2answers
1k views

Formula / calculation of the function random() / randomSeed()

In which file can I find the calculation that is called with random()? If it is not too much could you also post the content in your answer? I am using an Arduino Uno and its standard IDE. I found ...
4
votes
3answers
6k views

Arduino UNO hangs without visible reason

I'm having trouble with Arduino UNO. I bought a cheap clone (what obviously may be the reason) along with display+keypad shield (site in Polish). For my project I wrote a menu library, which (along ...
2
votes
3answers
44k views

Make a PC graphical interface for Arduino - Any easy software? [closed]

What's the best/easiest software to make a PC-Arduino interface? Ideally, I need to create a .exe that shows up a simple graphic interface, where the user can display data acquired from sensors ...
2
votes
1answer
1k views

Updating the ARDuino code over GPRS

I've been searching a little for self-updating the ARDuino, and most i've come about is updating it using a wifi / lan shield. Now I have a GPRS shield that can connect it to the internet. Say that I ...
2
votes
2answers
144 views

Is it possible to use Serial window for debug statements while using the hardware serial port for GPS module?

I am using the hardware serial ports of Atmega 328 to connect to a GPS module . A GSM SIM900 module is connected via Software serial . Is it possible to print the debug statements in the Serial window ...
2
votes
1answer
215 views

Adafruit Feather 32u4 BLE compatible with Software SPI?

Let me preface by saying that I am not super experienced with electronics. I have an Adafruit Feather 32u4 that is using Hardware SPI to communicate over Bluetooth. Unfortunately, I'm also hoping to ...
2
votes
1answer
1k views

Printing transmission data from nRF24L01+

I have a beginner's problem. I have 2 nRF24L01+ devices. They are communicating with each other great, and I can talk with the nRF via SPI. The problem is I want to display, on the serial monitor, ...
2
votes
2answers
2k views

Record a duration of time as data

I have very little experience with the Arduino and am hoping that you may provide me with some helpful info. I would like to build a device that records time spent on a project. I envision the main ...
2
votes
1answer
305 views

Can I run arduino on Windows Embedded Compact 2013?

I'm actually working on a robotic project for which I'm planning to use arduino to drive the wheels.For this, I want to send signals from my Onboard embedded computer (which has Windows Embedded ...
2
votes
4answers
2k 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 ...
1
vote
2answers
4k views

Structure Array Initialization

I'm trying to initialize a char array which is part of a structure as follows: #define TRUE 1 #define FALSE 0 struct s_field_def { // structure for managing display field char f_txt[16]; // option ...
1
vote
5answers
4k views

Is there a way of turning a computer into a Arduino type board? [closed]

The Arduino's processing power is not sufficient for some of the tasks I would like it to perform... I'm thinking of making a Home Automation System and would like some serious processing power at ...
1
vote
1answer
1k views

Can't get constant reading with load cells

I'm really a newcomer to arduino and I'm trying to build a scale with four SEN-10245 load cells and a HX711. My issue is that I can't get constant readings in the serial monitor and I'm not sure if my ...
1
vote
1answer
5k views

Use an Arduino to “intercept” transparently serial communication to Grbl?

I need to have an Arduino "spying" on communications between the PC and another Arduino with GRBL. The goal is to intercept a couple of GCode commands and act on them instead of Grbl. My first step ...
1
vote
3answers
7k views

Problem with Software Serial: no response

I am using an Arduino Uno board with IDE 1.6.7. I have tried to implement a tweaked version of the basic example (SoftwareSerial example) from the Software Serial library. The code is attached. It ...
1
vote
2answers
94 views

What software is available for use with AVRISP and USBASP on ATMega48, 328, 2560?

What software is available for use with AVRISP and USBASP on ATMega328, 2560 for read/write fuse, flash and EEPROM for UNO, Pro Mini and Mega2560 board? (a fact question not opinion) Which software ...
1
vote
1answer
37 views

Dealing with noise in arduino interrupt

I'm makeing two modules, module2 gets sensor signal, and send wireless message to module1, with HC-12. Then module1 is going to do some work it is supposed to do. Circuit configuration is in the ...
1
vote
1answer
72 views

Simple ModBus Master function 15

I have a simple setup with arduino Nano as slave and a arduino Mega as master Can anyone explain how the function 15 FORCE_MULTIPLE_COILS Works i have been running some test on this and cant figure ...
1
vote
2answers
154 views

Hardware/software serial for HC-05

can anyone please tell me the whole difference between hardware and software serial for the HC-05. I read UART,USB cable, serial and I was like really confused so what is the difference and advantages ...
1
vote
1answer
494 views

Tinkercad but offline?

I have some issues with network and would like to work with arduino everywhere. I use Tinkercad which is great, but I would like to installit to my laptop and work without using WiFi. I couldn't find ...
1
vote
1answer
15k views

Difference between Arduino and elegoo? [closed]

I know that Arduino uno and Elegoo uno use chips from the same manufacturarers, but still I was wondering if there's any difference between them in terms of software or similar. In school a professor ...
1
vote
1answer
50 views

Dynamically switching pin out

I have a connector with 10 pins, and a bus which uses 2 of the 10 pins. What I need to do is, in software, attach my arduino to 2 of the 10 pins. I cannot wire it directly as the 2 pins required may ...
1
vote
2answers
1k views

WeMOS creating soft access point from old code even when new code doesn't have it

In the past I uploaded the code below: #include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <DHT.h> #define DHTTYPE DHT22 // DHT 11 #...
1
vote
2answers
357 views

What GUI software/platform can I use to control my Arduino MP3 player over the serial port? [closed]

How would I make a GUI program on a different platform to control my Arduino MP3 player using the Arduino's serial port. I would like the GUI program to show images like this for 'start': ...and ...
1
vote
0answers
26 views

Simulating Raspberry Pi Robot using software [closed]

I have to make a simple Raspberry Pi Robot that can be controlled from a mobile/ desktop app as a college project. The problem is due to COVID-19 I don't have access to any hardware and so I will have ...
1
vote
0answers
17 views

pH code of Arduino SEN0169 refuses to output

Good day everyone! I'm making my research project a hydroponics sensor that collects air and water temperature, humidity, conductivity, and pH, then sends it through a sim900a GSM module. However, ...
1
vote
0answers
102 views

Display code for 8051f387 [closed]

we are using 8051f387 microcontroller 8bit, need display code for the same, I can answer any or all question about it pls help me with the same.
1
vote
0answers
55 views

Need debug Software that can be used with Arduino IDE

Background: I have made a standalone Arduino board using Atmega328PB. I have written code for a clock which lights LEDs based on the time. After a day or so it locks up. Sometimes it reboots. I ...
1
vote
1answer
206 views

Random characters transmitted from ESP8266 to Arduino

Below is the code for getting a value from Firebase and sending the received data to arduino for performing necessary action. The code here here sends a string "o" to arduino once //uploaded to ...
1
vote
0answers
27 views

Arduino not starting after 1.8.10 update

First off sorry if this is the wrong place. Yesterday I updated the Arduino IDE to 1.8.10 and I was able to program a couple of hours. Powering up my laptop today though the IDE is active, I can't ...
1
vote
0answers
403 views

Configuring Timers to Add One More 50kHz Square Wave

I am generating two 50kHz square waves, but I would like to generate three square waves. I have problems with generating the third square wave. Basically, I need to configure the timer bits so that I ...
1
vote
0answers
556 views

Arduino Square Wave Phase Shift by 270 degrees

I am using this code to generate a square wave with Arduino and shift it by 90 and 180 degrees. However, this code is not able to shift it to 270 degrees. Could you please suggest how may I modify the ...
1
vote
1answer
370 views

Possibility of installing custom firmware from Arduino Uno R3? [closed]

I've been messing around with installing keyboard firmware onto my Arduino UNO R3 (I used this tutorial) and had an interesting idea: would it be possible to have this install custom firmware, ...
1
vote
1answer
679 views

Arduino Robot won't move

I am building a robot for a school project. I use an Arduino Uno, 2 dc motor's and an Ultra Sonic range measurement module. I want the robot to be autonomous, he has to be able to move around on his ...
0
votes
1answer
51 views

Can someone help me decipher the code for the arduino? I am totally lost

The code is as follows: void loop(){ light = analogRead(5); Serial.println(light); analogWrite(3,light/4); }
0
votes
2answers
137 views

“expected primary-expression before '.' token” in debug code

I'm making some code for school, and is adding debug code to it. When compiling, I get the error as written in the title. This is the code in question: #define DEBUG 1 #ifdef DEBUG #define Serial....
0
votes
1answer
725 views

Software I2C - sending data

I'm trying to read a voltage in from a power supply to an Arduino Micro, then send it to an oscilloscope through an I2C (MCP4725). I would use the default pins on the Micro but I want to wire three ...
0
votes
1answer
1k views

SoftwareSerial Write to return Read in Serial Monitor?

Hoping someone can help me out in my conundrum here... I currently am testing the SoftwareSerial library out to understand how I may use it in my project. I have a wire running from pin 6 to pin 9, ...
0
votes
2answers
57 views

How do software interfaces compare to hardware interfaces in therms of speed and reliability?

The Arduino core includes numerous software interfaces mimicking the hardware interfaces provided by the chip and even extending beyond. My question is, if in a project I can either use software or ...
0
votes
2answers
927 views

How to automatically reset the NRF24L01 module

For my home-automation project I'm using several arduino nano's with each a NRF24L01+ module. Each module is able to both receive and transmit with one another. Everything seemed to be flawless for a ...
0
votes
1answer
340 views

Motor isnt spinning when using L298N motor controller

I have a L298 motor controller connected to a motor with a 6 volt power sources. the motor however isn't spinning any ideas I'm using a esp 8266 node mcu board. I would like to use pwm but for right ...
0
votes
2answers
471 views

analogRead over a certain time

I would like to read an analog value using analogRead, save this value and compare it to an analogRead value 5 ms later. How would this code look? Because giving a variable the value of analogRead(A0);...
0
votes
2answers
533 views

Complex Arduino programs

Im working on a RGB LED matrix project (10 x 10 Neopixels) and I'm using classes to handle the different hardware components. Whats the best way to deal with multiple files in the project eg, I have a ...
0
votes
1answer
21 views

First Project (auto garden)

I've been tinkering for quite a while and I'm looking to try out an arduino to control an automated small garden project for growing seeds. I've never done any coding before and am looking for some ...