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1500 questions
4
votes
1 answer
Working with multiplexers for constant voltage output
I'm working on creating a circuit where I'm trying to have the ability to switch multiple strands of LED rope on and off at a time using an Arduino and a multiplexer.
With my current configuration, I have the a circuit and a sketch that will cycle…
narner
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4
votes
1 answer
Can Arduino Leonardo use USB port and RX TX serial pins at the same time?
Can I use the TX/RX on pins 0, 1 (to a serial slave device) while also having the USB port dedicated PC communication?
101
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4
votes
2 answers
How Arduino IDE works?
You know , a simple arduino sketch has no main function , no include preprocess cmds,so I just want to know how arduino IDE convert a sketch to normal C/C++ source code,and what is the source code looks like.
If possible,I also want to use cmd…
user7028945
- 43
- 3
4
votes
2 answers
What happens if we connect GND and +5v?
What will happen if I by mistakenly connect GND and +5v of an Arduino Nano? Is there any protection for it? Or will it get short and fry out something?
Sagnik Pradhan
- 520
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4
votes
5 answers
SIM800L change default baud rate
I am using an ATmega328P with internal clock (8 MHz) with a SIM800L module. The default baud rate of the SIM800L is 115,200 baud and I can't make them talk to each other correctly. Although I was able to make them talk very easily at a baud rate of…
Sherzod
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4
votes
3 answers
Arduino analog pins
How many sensors can be used by a arduino uno and mega separately.?
Does each sensor can use the ADC of arduino simultaneously? If not how to use all the sensors simultaneously if possible?
Nuthan
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- 2
4
votes
3 answers
Can't include files
For some reason, the Arduino IDE can't find the file I have made for the project:
#include
#include
#include "foo3.h"
Where foo1 and foo2 are normal libraries thus included with <..> but foo3 is another file I wrote which resides…
Ignat Georgiev
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4
votes
3 answers
How to avoid odd naming rules for Arduino when writing a library?
I'm building a small library that will be used and production and released open source. I'm paying a lot of attention to the "best practices" to make sure this code is reliable and easy to use. I also would also like to make this easy to edit. I'm…
Anonymous Penguin
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4
votes
1 answer
Unable to receive SMS on Android
I have a GSM/GPRS shield for Arduino. It uses a SIM800 from SIMCOM. I've done several projects using it. Previously I used to send SMS from the same module. which were delivered appropriately. Since yesterday, whenever I am sending an SMS to my…
Gaurav Mishra
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4
votes
2 answers
RTL8170 Web Server - client unable to connect
RTL8170 is a new module, which is in many ways better than the old ESP8266 module. We are able to flash this module with Arduino using an Ameba Writer, and it should be able to support any code that is supported by the ESP (with some adjustments).…
DemSec
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4
votes
4 answers
RGB LED Strips with Arduino
I am trying to control an RGB LED strip with an Arduino. I have followed the tutorials in both of these websites:
Using MOSFETs: https://learn.adafruit.com/rgb-led-strips?view=all
Using LED Amplifiers:…
lomas09
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4
votes
5 answers
Stop Led's from blinking
My code:
// Pin 13 has a LED connected on most Arduino boards.
// give it a name:
int led = 13;
const int buttonPin = 2;
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
…
Utsav
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4
votes
1 answer
What controller should i use?
I'm working on a little DIY project in which I intend to make my own dataglove. Now I'm kinda stuck on choosing the right microcontroller. And since it can be quite costly, I thought to ask for some help.
So: I'm going to use 12 flex sensors (maybe…
ExtraLars
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4
votes
1 answer
How to have compiler know whether Arduino or ESP8266?
I am doing some work for both Arduino Mini Pro and for a NodeMCU style ESP8266 board. Within the Arduino IDE I tell it what board I am compiling for and downloading to.
How do I access which board in my scripts?
Some sections are for one or the…
cc young
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4
votes
1 answer
Arduino Nano nRF24L01+ DFPlayer Mini SPI Problem
I'm working with an Arduino Nano board clone (CH340) on wireless control of DFPlayer Mini, transceiver sending a Struct variable with MachinePrefix (just in case), sound type (I have more folders by type of machines) and number of sounds.
The…
novluk
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