All Questions
Tagged with arduino-uno arduino-ide
378 questions
0
votes
2
answers
636
views
Arduino IDE Failing to Compile Any Sketches
OS: Windows 11
Arduino IDE Version: 2.3.2
I recently opened up my Arduino IDE to find that nothing--absolutely nothing--would compile. Whenever I tried, I got the following error message:
Using board '...
0
votes
0
answers
94
views
Why can my computer not see my Arduino Uno?
I've plugged my ELEGOO Uno R3 into a USB port on my computer with a USB cable. However, neither Arduino IDE nor my computer can see the device. When the Uno is connected, it shows no connected devices....
0
votes
1
answer
110
views
Error: void value not ignored as it ought to be done = radio.read(&Irms, sizeof(float));
Good morning everyone, I had this sketch that worked now when loading the program gives me an error:
#include <Wire.h>
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
...
- 9
1
vote
0
answers
193
views
Issue with multiple RC522s connected to Arduino Uno
THIS IS NOT A DUPLICATE QUESTION. My main problem is that whenever I
attach the third RC522, the whole system becomes unstable. When I
attach the fourth, suddenly one or two of the modules stop ...
- 119
-1
votes
2
answers
173
views
I cannot resolve the errors with attachInterrupt() (error: invalid use of non-static member function) [duplicate]
I have been trying for days to get this code to work, but I cannot find a solution. Can anyone please help me find what I am missing here?
My sketch:
#include <ControlInterrupt.h>
const int ...
- 111
2
votes
3
answers
793
views
Importing content of text file as string into Arduino code
Is there any macro for importing the content of a file (for example html code) located in the sketch folder as a string for the Arduino IDE during compilation time?
- 23
2
votes
1
answer
710
views
Read binary file on SD card
Why I can't read the last byte in the file when I use the Arduino ide code?
The code in cpp is work without any mistakes.
This is my code on Arduino ide:
vector<unsigned char> text;
unsigned ...
- 149
1
vote
1
answer
1k
views
Using file.seek() with arduino ide
I have in my code in c, this function:
fseek(file, 0, SEEK_SET);
I need to use the same function with Arduino ide. Is this correct?
file.seek(file.size());
Or what is the alternative ...
- 149
2
votes
0
answers
133
views
What wrong with my Arduino code?
I have a rotary encoder (ppr = 600) and I want to write code to achieve the implementation to read current angle and direction.
Here is my code. I think it is correct but it donot have any output on ...
- 29
1
vote
0
answers
81
views
Connecting HM-10 and relay to Arduino Uno
I have an 8 channel relay, an Arduino Uno, and this HM-10 bluetooth module: https://www.amazon.com/dp/B06WGZB2N4
The Goal
Send a number (1-8) from my Android phone via bluetooth to turn a relay on.
...
1
vote
1
answer
2k
views
an lcd with I2C is not recognized by esp32
I have a NodeMCU esp32-s board and I'm trying to connect My 16x2 lcd with PCF8574T I2C bus to the esp32 , the problem is that the lcd doesn't show anything and the WireScan sketch can't recognize the ...
- 39
1
vote
1
answer
307
views
Run encoder code simultaneously with other code in Arduino
volatile unsigned int temp, counter = 0;
int county=0;
void setup()
{
Serial.begin(9600);
pinMode(2, INPUT_PULLUP);
pinMode(3, INPUT_PULLUP);
attachInterrupt(0, ai0, RISING);
...
- 11
-1
votes
1
answer
173
views
Continous Rotation Servo not changing directions
I have coded a robot to be controlled by a ps3 Controller. I am using continous rotation servos but unfortunately I can not figure out how to get them to change direction. My input for my if ...
- 1
0
votes
1
answer
255
views
Balancing pendulum using PID
Dear all, referring to the video at here on how to make a PID balancing pendulum as shown in the picture and the author also provided the arduino code in the video description. May I ask whether this ...
- 101
0
votes
2
answers
137
views
How to reduce codes numbers
I am new in Arduino projects, i made a digital counter that counts from 00 to 99.
Here is my code below
void setup()
{
pinMode(0,OUTPUT);
pinMode(1,OUTPUT);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
...
- 71