All Questions
Tagged with arduino-uno arduino-mega
270 questions
-1
votes
1
answer
60
views
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.
- 1
0
votes
1
answer
351
views
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 ...
- 111
1
vote
1
answer
2k
views
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::...
- 141
1
vote
3
answers
76
views
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() {
...
1
vote
0
answers
239
views
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-...
- 11
1
vote
0
answers
38
views
Megaboard Problems about pySerial Communication from Python to Arduino
I asked same question on another forum, but i need more opinions and advices.
I wrote a simple Python code and Arduino code.
In my code, the Excel matrix data is loaded into Python,
then converted ...
- 11
0
votes
2
answers
341
views
DS3231 with Arduino Nano for Timing precision
I need to synchronize two separate circuit boards working with Arduino Nano. The need is to activate one relay using Arduino-1 after 45 minutes, and another relay using Arduino-2 after 45.36 seconds. ...
- 183
0
votes
1
answer
937
views
Arduino nano timing precision
How precisely can an Arduino nano be timed? The project I am working on needs two Arduino nano to work synchronously. Arduino one have to activate a relay after 2700 sec and Arduino two have to ...
- 183
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
476
views
How many stepper motors can you run on one Arduino Uno? Ideas on how to run 9?
I am in middle school and new to Arduino. I just learned to set up and code a stepper motor on my Arduino Uno from watching YouTube videos. I want to set up 9 stepper motors to all run at the same ...
-1
votes
3
answers
341
views
Is there any way to efficiently code reading of four sensors and sending a serial output once it does detect a reading?
I am actually wondering if there's a way to efficiently do this block of code. There are two things in my specifications and these are:
Four IR Sensors that detects blockage. Basically just to ...
- 111
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
2k
views
Standalone ATMega328 - do I need to burn the bootloader?
I want to get an ATMega328 off of the Digi-Key, and use it like an Arduino (without requiring the whole Arduino board).
When it comes to programming, do I need to do anything special like burn the ...
- 111
1
vote
1
answer
214
views
Fluctuation in 4 half bridge load cell via combinator
I'm currently using a Sparkfun 4 Half-Bridge load sensor (50 Kg) with combinator and amplifier both are from the Sparkfun. Link:https://www.sparkfun.com/products/10245 (For Load Sensors)https://www....
- 13
2
votes
1
answer
2k
views
Nema 17 stepper motor speed problem
This code is quoted from here. May I know how to increase the speed of the NEMA 17 stepper motor further? I tried to increase the step speed to 2000rpm but it does not even work. It only works for ...
- 21