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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How can I improve ELM327 response stability on Arduino after setup verified with OBD-II scanner guide?
I'm using an Arduino Mega with a Bluetooth ELM327 adapter to read live data from my car’s OBD-II port — specifically RPM (PID 010C). The goal is to log data to an SD card or display it in real time.
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Arduino Mega: is there a way to have additional interrupt pins?
I have an Arduino Mega, and I run out of interrupt pins. I have only pin 18 available, but I need 2 of them. What can I do?
pin
INTx
digitalPinToInterrupt(pin)
3
INT5
1
2
INT4
0
18
TX1 INT3
5
19
RX1 ...
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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 do I split an incoming string?
I am sending a list of servo positions via the serial connection to the arduino in the following format
1:90&2:80&3:180
Which would be parsed as:
servoId : Position & servoId : Position &...
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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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Software serial communication problem between ESP8266 and Arduino Mega for plant monitoring system (using Blynk IoT)
We're using the ESP8266 to receive data from the Arduino Mega board, where our sensors are connected. Supposedly, our ESP is connected to the Blynk App. However, the values showing up in our dashboard ...
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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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1
answer
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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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Communication protocol and hardware for 50-100 feet of communication between 2-3 arduino megas
Newish person here. Have done a few smaller projects, looking at something a bit bigger and need direction on where to start.
I'm building a guitar effects pedal board that I want to be able to ...
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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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Turn ESP8266 into an Arduino IDE-like "sketch uploader" (over hardware serial)
I have an ESP8266 module which has downloaded a hex file for an Arduino Mega2560. This hex file (call it mega2560.hex) is sitting in the ESP's SPIFFS file system. What I want to do is basically ...
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Arduino connect programatically two wires of external 3.3V device
What is a missing puzzle in here, relay, transistor?
I would like to pull pin of external device to the ground programatically using arduino's digital pin.
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Connecting Arduino Mega 2560 to Python with PyFirmata
I am currently controlling two servos using the Arduino IDE, but now need to integrate my Arduino code into a Python script. I read about how to use PyFirmata and went through the process of uploading ...
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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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