All Questions

I have NodeMcu Esp8266 , I try to connect it to My network and it isn't done I did it before and it connected but it unable to connect again I tried to scan WIFI networks and it done ( the result ...

After using int to display text in serial monitor, now i am trying to use string but there is something wrong. The expected reslut is "Led1 is on" in serial monitor but what i get is "285". This is ...

I am trying to obtain Quaternion values from a BNO055 connected to ESP32-PoE board by Olimex. Code #include <Wire.h> #include <Adafruit_Sensor.h> #include <Adafruit_BNO055.h> #...

I have a device that outputs a TX RX RS232 serial string. Is there a way I can take this locally to an Arduino and send over Wi-Fi to another Arduino? I'm relatively new to all of this so any advice ...

I've I2S MEMS Microphone breakout and Mkr1000. By using ArduinoSound library, I'm able to get FFT representation of my audio output. My purpose is demonstrate it in frequency domain monitor. I guess ...

I don't have any code for this yet but I would like some ideas on coding it. I have a directional antenna that is rotating at a slow speed and a ham radio connected to the antenna. I have an output ...

I have a MINI DC GearBox motor and Adafruit Motor Shield v2.3 on an Arduino, powered by a DC wall adapter. I have checked that the soldering is all correct, the motor shield is powered up (LED turns ...

i'm study the Low-Power library to better undertand how it works. In this part of code i have some question. Sometime he uses commands like: power_timer1_disable(); power_timer0_disable(); but in ...

I wanted to move most functionality of my sketch into different classes, to keep things better organized. One class worked just fine, but when I had to use multiple classes and pass information ...

I am going through an Arduino Learning Book(978-1-59327-448-1) and I've run into the same issue twice now. When I enter data into the serial monitor, the number that it reads and displays(when asked ...

My project uses ESP8226 to allow: 1) user to set an alarm. 2) after 20 sec of the alarm ringing, it will notify to phone via blynk app using motion sensor. 3) after 40 sec it will turn off ...

Im quite new to arduino in general and i'm sorry for the beginner question. could someone explain what the 3.3v and 5v on boards do? I know their voltages. but can you run one on the other? whenever ...

I have been working on my project but I get an error and I need some advice or correction. I use I2C method to communicate between master and slave. I've got two questions: I send 7 inputs (from ...

What is the least value of time that I could measure(count) using micros()?

Its my first time Using Arduino, and facing this problem read all the forums and applied many solutions, but none worked. tried reset button before after upload but didn't worked. Error Says: ...

Is it possible to change the phone number the GSM module sends a message to by texting it a keyword or something?

Is it possible using an arduino to control more than 4 PWM fan at 25khz ? I have found this but 4 PWM limited with an UNO https://arduino.stackovernet.com/fr/q/8407 An other arduino, like a 2560 ...

If I understand correctly using the Adafruit_Sensor one can extract information from the sensor specific information. These sensors are currently mentioned in the README. I am using the BNO055 for two ...

I am HTTP Posting a data to web api https://morning-cliffs-85779.herokuapp.com/api/users from a arduino connected to esp8226. I am using wifiesp library to HTTP_POST a data. The REST apis are hosted ...

I got an SD card breakout from an online shop, its the iteed kind without the level shifter, it has the 3.3 / 5 V switch. I cannot find any libraries or write example for it. Has anyone dealt with it ...

legend: Yi = Y new Yi-1 = Y old i want to make this in my arduino my function Yi = Yi-1 +6 start y0 = 0 ==================================================== Y1 = Y0 +6 = 6 Y2 = Y1 +6 = 12 Y3 =...

I am currently running a project with 2 TinyDuinos and 2 TinyShields 433MHz Radio (SI4432) in order to pass 3 axes (x , y ,z) from one to the other from long distance. I have tried to concat the ...

So I have a program that measures temperature and humidity over time. Here isthe code I use: #include <SD.h> #include <SPI.h> #include <DHT.h> #include <Wire.h> #include "...

I'm trying to upload this code and it works properly but I can't see anything on my serial plotter const int AnalogIn_Pin0= A0; const int AnalogIn_Pin1=A1; const int Pwmout_PIN=11; float ...

I connected the PINs and created SoftwareSerial objects as shown in picture. I am able to write from atmega to ESP8266 and I managed to confirm this when checking serial monitor of ESP8266. But I am ...

#include "Wire.h" #include "LiquidCrystal.h" #include "math.h" #include "EEPROM.h" #define DS1307_I2C_ADDRESS 0x68 #define PIN_STG 8 #define PIN_MENU 2 #define PIN_DR 10 #define PIN_COMMAND_A A1 ...

The objective is to use timer 1 to generate a waveform on pin 10, fast PWM with a prescaler (frequency and duty cycle is selected by serial input, which leads the prescaler to be selects through a ...

I have to port a Project written for an Arduino Micro to an MKRZERO. It communicates via UART with an IC and should also provide a clock signal. The former code I have used is this: #define ...

i am trying to make some kind of p2p smart network using arduino nano. is there anyway to plug the arduino into the pc, and the pc will recognize him as external network card? so any internet request ...

I am creating a standalone Arduino using Atmega328P. The circuit is below. However, I'm seeing avrdude: Device signature = 0x000000 error whenever I try to burn the Arduino Uno bootloader. I'm ...

I am working on a web app to program some nodeMCU devices that were flashed with the arduinoOTA library. http://esp8266.github.io/Arduino/versions/2.0.0/doc/ota_updates/ota_updates.html I tried the ...

I am doing a project right now that involves a Neo 6M GPS module, a micro sd card module and 6 BH1750 light sensors. All the modules work fine when testing them standalone, especially the GPS module ...

I made my own custom Atmega32u4 board which worked all the time, but recently when I unplugged it for a moment to connect something to this port (I had no other free) board stopped working. windows ...

I've asked this question on the Arduino forum but no one answered. I'm trying to make PS3 controller with arduino and ps2 controllers. I used PS2X library to communicate with ps2 controllers and pro ...

I have a button with two isolated tracks. I want to be able to wake up esp from deepSleep with this button, and also detect that it was clicked. So i can't connect it to reset, because esp won't work ...

I am having an issue when I try to upload a program to the board. I am working on a Simon Says game, and when I first started uploading, my computer handled it fine. Everything worked properly. ...

I have a LCD screen, and I wanted to use it with a Simon Says game that I am making. I tried the tutorial on the Arduino website, but it doesn't work. Then I tried another tutorial on Adafruit. On ...

the code is on" digitalWrite(R4, HIGH)" when I get to compile it gives that", "I not an expression

The idea is when a switch is pushed, the corresponding tone will be played as well as lighting up the corresponding LED. I have the circuit set up to where each array matches another, for example ...

Is it possible to send live data stream continuously from Arduino to any android smart phone. Basically i just wanted to send gyroscope readings to my cell phone continuously. the the most important ...

By using boolean and flag, I can now control the green light but the program cannot repeat or loop the sequence for traffic light from red to yellow to green. If I don't use flag, the sequence red-...

I am a novice in Arduino programming and I'm setting up an Arduino controlled, underwater time-lapse camera to take a picture every 2 hours. It's going in the ocean for a month and I want to be sure ...

I have a MKR Zero running the code from the official Arduino site : https://www.arduino.cc/en/Tutorial/AnalogToMidi The circuit wasn't working (always reading a value of 0 on A0 -- as detailed in ...

I have an Arduino Uno hooked up to an ESP8266-01. I've changed out the wiring multiple times and reassembled them just to make sure that I'm wiring everything the way it should be. I am however unable ...

So we were asked to do something with a force sensitive resistor so naturally i thought of a project which takes the name of the main component which is force and applies it ,mine works by as you ...

I am making a simple calculator with Arduino Uno R3. It only has +, -, x and /. I use 3 libraries: This use for LCD with I2C module. Arduino-LiquidCrystal-I2C-library This use for keypad 4x4. Chris--...

My esp is consuming 180mA with a led blink. The same consumption happens when I put it in WIFI_STA mode with the WiFi.mode(WIFI_STA); function. What should I do to reduce consumption? Used AMS1117 CI ...

I'm trying to build a gesture controlled robot. Using: Arduino nano Encoder and decoder (HT12E and HT12D ) RF Transmitter and receiver L293D motor driver While I running the code in the serial ...

I researched a lot on how to connect this devices to each other to get the data from ultrasonic sensor and DHT11. But it wasn't clear on how I will connect the devices on their pins. I found one ...

I have a nodemcu connected to a shift register(https://www.amazon.de/gp/product/B07CHBYR7Z) to control an 8 channel relay board (https://www.amazon.de/Elegoo-Relaismodul-Optokoppler-Arduino-Raspberry/...