Questions tagged [arduino-mega]
A microcontroller board based on the ATmega2560 or 1280 chip. Use this tag for questions specifically regarding the Mega, and not just general Arduino usage.
1,822 questions
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After an USB disconnect the program I've uploaded to the Arduino Mega 2560 doesn't work properly anymore, why?
For a race simulator I'm using several Arduino Mega 2560 boards on which the code that will post below will be running. (not my code! But freely available on the internet)
Everything works fine, just ...
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Arduino Mega 2560 + DRV8871: Motor Not Moving with PWM Control
I'm using an Arduino Mega 2560 to control a DRV8871 motor driver connected to a DC brushed motor. The setup includes:
Three buttons: UP, DOWN, and FAST
One limit switch input, where the upper and ...
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Arduino keeps restarting with L9110 and DC motor
I am trying to control a DC motor using the L9110 motor driver and Arduino MEGA 2560.
Here's the code.
#include <Arduino.h>
const int rightA = A3;
const int rightB = A2;
void setup() {
...
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How to use C++ user defined modules in Arduino
Does Arduino support C++ module import functionality i.e. what would it require to implement something like this in Arduino: import std;?
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Interrupt routine has unexpected execution
An interrupt routine is executing unexpectedly, and I can't figure out why. Can you please have a look?
Hardware is a generic (knock off) Arduino Mega, with an unused Ethernet shield, and a touch ...
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350
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Different pin names in 0V7670 Camera Module
I am trying to follow this tutorial, SIMPLIFIED! How to Use OV7670 Camera with Arduino (other tutorials are also the same) and I noticed that my Camera module has different pin names, what do I do?
...
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Fail to discard the character T from my transmitter Arduino
I wrote code for my transmitter Arduino. I want to send the data to the receiver Arduino through Tx and Rx serial.
The issue is that I could not discard the char "T" and it appears as output ...
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interrupt from a button and wait until serial port 1 has a message
I'm a little bit loss because I'm learning how to use the interruptions on Arduino.
I'm creating a program to read an RFID code that arrives if an RFID transmitter is close to the antenna (a little ...
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365
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LED control with a string variable
I would like to control three LEDs with a string variable using an Arduino Mega.
I have connected the three LEDs to pins 10, 11 and 12 of the Arduino.
If my string equals Red, the red LED should turn ...
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How to handle class initialization when using brace-enclosed initializer lists
I'm working with a custom C++ library, CPSTL, for Arduino, which includes a cpstd::vector class that is designed to work with cpstd::initializer_list, cpstd::initializer_list is supposed to mimic std::...
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Pressure transducer returns 2.4v at 0 psi when working with a 0.5v to 4.5v pressure transducer
I have this pressure transducer:
https://www.amazon.co.uk/dp/B07YZL6TYD?psc=1&ref=ppx_yo2ov_dt_b_product_details
The transducer has a range of 0.5v to 4.5v which translates to 0 psi to 100 psi.
...
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Turn on by long press of a button?
In my project on Arduino, I want to implement turning on the whole circuit by long press of a button.
But at the same time, I want the Arduino to be turned off in standby or sleep mode, but I don't ...
- 111
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314
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DS18B20 Error in Proteus 8.13
I am using the below code to check temperatures from 36 DS18B20 sensors using Arduino Mega 2560. If any one of them go above 50 deg. celsius, then it sets the output pin to HIGH.
I am trying to run ...
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Separate from Serial for digitalWrite()
This is my current code (Arduino Mega 2560):
#define p1 2
#define p2 3
void setup() {
pinMode(p1, OUTPUT);
pinMode(p2, OUTPUT);
Serial.println("ARDUINO : CONNECTED");
}
void loop() {
...
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596
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Can't install to arduino mega 2560 using arduino-cli, but can using IDE
I have a MKS GEN L v1.0 3dprinter board that works fine uploading using the IDE. But I need to install to it using the arduino-cli.
For some reason, the command arduino-cli board list says that the ...
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Best way to send a boolean (1/0) to a windows application in real time?
I have an arduino mega connected to a light sensor that reads the status of a machine's indicator light. I have a C++ application that controls the machine, and I would like the arduino to send the ...
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Why does analogRead(A0) deliver different Values when called in a library file vs calling it in the sketch directly
I wanted to write a library representing a sensor to later on have an array of sensors.
I generated a file MoistureSensor.h:
#ifndef MoistureSensor_h
#define MoistureSensor_h
#include <Arduino.h&...
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1
answer
520
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Serial plotting a pwm
I'm trying to plot the value of the pwm that increases (every 2 sec) then decreases to compare it to the value of an encoder. I was expecting a continued value (like a step ) during 2 seconds but ...
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slave arduino receiving commands from two serials
I have a slave arduino connected to a master arduino mega (through UART) and to a RPi (through USB). The slave arduino is set to monitor various SHT85 (through I2C) and NTC sensors. What I would like ...
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Pin outping 1V instead of expected 5V, not hardware related
Heyo everyone !
I'm in a project where I need to send a signal if I detect vaccuum.
I'm sending the signal on PIN 9 but I soon realized that I was only getting 1V.
Tought I was alternating between ...
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Arduino MEGA crashes with Ethernet shield to connect to two TCP servers
I have Arduino MEGA with Ethernet Shield and a SD card connected to a RUT950 GSM router. Then, I also have two sensors connected to the router and they run a TCP server that sends measurements ...
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537
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Arduino Mega Loopback Test with Several TX/RX Ports
I am trying to do a loopback test using an Arduino Mega. What I am looking to do is send a byte over TX and receive said byte back at RX and verify that the byte is unchanged. More or less I just have ...
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Error with Mega2560 via SPI
I tried the following code to communicate via SPI with MPU9250 and Mega2560 But I got the following error:
Error initializing communication with IMU
Why I got this error?
/*
* Brian R Taylor
* brian....
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250
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Stepper motor not working with A4988 driver
I have been trying to run stepper motor via Arduino Uno and A4988 motor driver via this tutorial: https://howtomechatronics.com/tutorials/arduino/how-to-control-stepper-motor-with-a4988-driver-and-...
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Cannot connect Arduino Mega 2560
I was able to work with the same Arduino on the same laptop yesterday. However, the Arduino IDE is unable to connect the Arduino Mega 2560 today. I tried with a different Arduino Mega 2560 but the ...
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