All Questions

i am having a byte array let us say byte arr[7]={123456}; how to compare this array with a list of of other array like this for example byte buffers[5][7] = {123456,654321,987654,456789,765432}; ...

I have been trying to figure out this MPU6050 for a bit but the RAW readings are confusing me. It seems to me that the accelerometer readings and the gyro readings are getting swapped... and I don't ...

I have an ATMega328 board which processes instructions from a PC and reacts in a given way. The code is straightforward: The board void setup() { Serial.begin(9600); Serial.setTimeout(50); //...

I'm following this tutorial page and I don't have a 10k ohm potentiometer on hand. Could I replace it with resistors to simulate a manual setting and replace the resistors to adjust to a new settings. ...

I'm trying to use NRFlite library to facilitate a simple wireless remote incorporating a 3x4 keypad and nRF24L01 modules. I have it all working well except for one programming puzzle. All of the ...

It's an arduino board, model UNO R3. I have 3 5cmx10cm heating pad power required 5V DC up to 1A and can withstand up to 12V DC. These 3 heating pad are wired up onto arduino board with red wires ...

While using DumpInfo example or Rfid_read_personal_data Esp8266 & RFid are working fine, but while using the code given below, Rfid scanner is unable to scan the card (I'm making an attendance ...

I looked around for solutions to my issue by searching on the forum and elsewhere and haven't seen similar issues - (https://arduino.stackexchange.com/search?page=2&tab=Relevance&q=MQTT%...

Sorry For my bad English. I will start to make a mini conveyor (100 cm x 30 cm) with an Arduino Uno. What is the best motor should I choose for my project ? - Stepper Motor ? - DC Motor ? Etc. ...

Hi I am new to Arduino and have limited experience with the system but I want to do a project that requires me to send a PWM signal to a RC car receiver. I have been looking around and have only ...

I have Arduino Genuino Uno and 'Extra PC' Debian Linux USB dongle. I can get board data S/N etc., but TX LED permanently lit and data showing on TX line with an oscilloscope. I get the following error ...

Context: I have a project where I need to aim a laser pointer with as much precision as possible (on an affordable budget). The laser diode is attached to 2 servos to cover a plane. The thing is, I ...

Can I control 4 servo motors using atmega32?

Does atmega32 has built in CAN bus...if not,how to implement CAN bus using atmega32

NeedHelp. i have 2 type of sending sms. ihave tilt sensor to trigger an "accident sms" and proneArea for sending sms every 3 seconds. i need help for Receiving SMS , if the gsm receive an sms it will ...

I am unable to access elements of a 2D PROGMEM array from inside a loop. Please see the following example: const byte a1[] PROGMEM = {'a', 'b', 'c', 'd'}; const byte a2[] PROGMEM = {'e', 'f', 'g', 'h'...

I am powering 2 stepper motors with an L298N driver each (from a 9V 2A external power supply powered from the mains: https://www.amazon.co.uk/BERLS-Power-Adapter-Elegoo-Connectors/dp/B07GSM6YLX/ref=...

I'm working on a project to use a sound sensor on an Arduino and connect it to adobe flash. The sensor must trigger an animation or object on Flash. I've been looking all over the internet for ...

I have written a program to toggle digital pin of Remote Xbee. the code: void setup(){ pinMode(led, OUTPUT); Serial.begin(9600); } void loop() { setRemoteState1(0x5); delay(1000); ...

I am a beginner with C++ but used to be good with BASIC (2 decades ago lol). I'm building a peristaltic metered doser that allows you to input desired mL on a 4x4 keypad and then when 'fill' button is ...

In the last few days, a problem kept me busy. I tried to communicate from a client to another client over a server, like that: Client1 -> Server -> Client2 Client1 sends a small message (like the ...

Is it okay to use map function in arduino to stablize a quadcopter? Like.. map(angle value, the Lowest angle,the highest angle,the lowest motor speed,the highest motor speed); These are what i ...

I'm using an addressable 150 led strip and an Arduino Nano to control it, using FastLed library. I'm tring do create a function turn_on_leds, which gets 4 parameters: 1) delay time for lighting a ...

I am doing a project on waste management. I have to separate waste majorly as metal, plastic and other materials. For that using Arduino Mega 2560. I have connected Inductive proximity sensor @ A0 (...

I have code that compiles correctly for an ATTINY85 board using the ARDUINO IDE but I don't have an ATTINY85 board. I have an Arduino Mega ATMEGA2560 and when I select this board in the Arduino IDE ...

I have a simple Low pass filter in my program that stops working after some time (Let say 4 hours or more). 'CRate' is a double type variable between -20 and 100. uint8_t T_Sample=10; double FCR0=...

I use Atmega2560. When the watchdog timer resets I want to perform certain task which cannot be included in the ISR. So I tried using the MCUSR but the value doesn't change. Please provide support. ...

I was able to connect my HC-05, pair it with my phone, and I can see data in the Serial Bluetooth Terminal Android App. But when I try to connect it to a certain application it says it cannot find it....

I want to make an IOT project using an Arduino nano and I need heart rate sensors. I I have a miband2. So, is it possible to connect them ?

I bought some incremental rotary encoders online https://www.bourns.com/docs/Product-Datasheets/PEC12R.pdf The spec sheet for those suggests a filter circuit for the outputs of the encoder that ...

only display this: ARDUMOTIVE ArduinoBased compassn.Compass Michalis Vas. nothing else. I tried another Arduino Uno, Mega, Nano, but execute only set up. Display is working.No compiler errors.Sketch ...

Poking through the example code of SDFS, I saw the following: static ArduinoOutStream cout(Serial); // F stores strings in flash to save RAM cout << F("\ntype any character to start\n"); What ...

I want my system to stay connected 100% of the time. I'm using a TCP Socket connection on ESP8266. So, I created a test Sketch like this below (and a NodeJS server app). Everything works fine, that is,...

I use a raspberry pi 3 to pilot my arudino uno, via usb. I'm using python and firmata and Tkinter library. Here is the code (below you will find the explainations) : #!/usr/bin/env python # -*- ...

I have a project I am working on where I need to check the pressure on a gauge using a camera. I am familiar with a little openCV programming using a laptop webcam. However, for this application, I ...

I'm trying to use ESP32 + Arduino IDE to control a relay. I've started by using the library and the code below. The problem I'm having: after clicking on the button and activating the pin, if the ...

Can I use 6 proximity ultrasonic sensors as input source for a single arduino and then use 6 different vibrating motors as output on it?

I have one problem with my code and I'm a beginner and I can't solve it. Can you help me? Thank you so much. I have this problem: error: expected unqualified-id before '{' token And this is my ...

I've been hitting against a wall for over a week now. My current project is to use a Teensy 3.6 to send data over an SPI bus to a chip which is effective going to be a signal generator. I've made a ...

I'm newbie with Arduino and need to do a short task: read data from SPI (sent by another microcontroller) and send to WiFi (by ESP32-WROOM-32). I can't understand how to initialize and read data from ...

Just got a Arduino Leonardo (with headers) dropped in my lap this week. I've tried experimenting with the Arduino C++ IDE and find it awkward. I have some previous experience with Forth and would like ...

#include<LiquidCrystal.h> LiquidCrystal lcd(7, 6, 5, 4, 3, 2); #include <SoftwareSerial.h> SoftwareSerial gps(10,11); // RX, TX //String str=""; char str[70]; String gpsString=""; char *...

I am using Arduino Uno as a Master Device and 3 Arduino Unos as slave devices. I am sending data from each slave to master after every 3 seconds continuously, and is going to execute further logic ...

I was working on a school project with my fellows and made an Arduino car a year ago and we all had a car each so here is my problem after one whole year we need the cars for a competition and my car ...

I need help trying to figure out how long an object stays in front of the sensor in in a specified range, for example, if an object is in within range of 10cm and 200cm I start a timer, the moment ...

I've following code: char a[5] = "bang"; char b[5] = ""; void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code here, to run ...

I'm doing a project where my Arduino uses an external ESP8266 wifi module (with AT firmware) to send http requests and receive server response. I'm trying to get an NBA scoreboard, and here's what my ...

I have used simple ping pong example found in maniacbug library. I am using Arduino nano + nRF24L01modules. With this I have one transmitter and two receiver. transmitter sends data on channel zero ...

If I want to receive a signal for 1 second, then delay for 2 seconds, then output for 3 seconds how should I write my program? Because I put delay 1 second in program it needs to receive signal for 1 ...

Our arduino-uno has already a OLED monitor 128x64 and AD8232 and we are not that confident to it.