Questions tagged [arduino-uno]
The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328P microcontroller.
8,148 questions
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How to write an integer value to an RFID tag?
I'm working on a project in which two Arduinos are to be used. Each Arduino is connected to an RFID reader. The first RFID reader should write an integer value to the tag detected, whereas the second ...
CommunityBot
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Replace bootloader in ATTiny88
There are other threads about replacing the bootloader on Arduino boards, but the ATTiny88 seems to be rather a different beast. Instead of creating a serial port and sending the compiled code to the ...
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Using ESP8266 to program Arduino by serial comm
Since the ESP8266 can self program on Wifi, can we use it to program Arduino too with the binary sent via Wifi? My Arduino is connected with Reset + RX + TX pins and shared power.
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Power up Arduino using AC/DC Adapter
I want your advice regarding powering up Arduino Uno using AC/DC Adapter to the barrel jack.
The first adapter I use couldn't work and the shop which I bought it from said the adapter was short ...
CommunityBot
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Laser emitter + receiver for Arduino (Arduino to Arduino communication)
I'm working on a project using 2 Arduinos connected to 2 computers to demo Serial to Serial communication.
We're using Arduino Uno connected to the computer via Serial and software serial for inter-...
CommunityBot
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PIR sensor gives high voltage [closed]
I wanted to test my new PIR sensor but it always shows the LED high voltage. Please tell me what to do?
code:
const int pirPin = 2; // пин pir датчика
const int ledPin = 13; // пин диода или ...
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Alternate LED Blinking Using PushButton
I have an task for my class where we have to make 2 LEDS blink alternatively using a pushbutton. I've figured out how to do the blinking and alternating but from time to time one of the led would go ...
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Ultrasonic Flowmeter Using TDC-GP22 and Arduino Uno
I'm working on a project of Ultrasonic Flow Meter with TDC-GP22 using Arduino UNO. I used the library of leokoppel
In my code,the configurations of the registers are copied from the Application Note ...
CommunityBot
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NEMA 17 with A4988 Runs Smoothly During Code Upload but Moves Erratically Afterward [closed]
Problem Description:
I'm controlling two NEMA 17 stepper motors with A4988 drivers and an Arduino Uno. I'm experiencing a peculiar issue where one motor runs perfectly smooth during code upload but ...
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Controlling a gear motor turn a valve handle [closed]
How to make the gear motor to turn only from 0 degrees to 90 degrees and back to 0 degrees?
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Arduino Temperature sensor with a LED
I want to program a temperature sensor with a LED using Arduino.
the goal is to make a sensor, when the temperature is over than Temperature max, the LED turns off and when the temperature is small ...
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Arduino interruption (on pin change)
I use the interrupt function to fill an array with values received from digitalRead().
void setup() {
Serial.begin(115200);
attachInterrupt(0, test_func, CHANGE);
}
void test_func() {
if (...
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Communication between two Arduinos using ENC28J60?
How can I connect and send data between two Arduinos using ENC28J60 ethernet adapters on both of them? Is there any guide or example code for me to take a look from or any library I can use to achieve ...
CommunityBot
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Trouble connecting Uno + ESP8266 to Wifi
I am trying to build a simple project to get data from a web server and display it, using an Arduino Uno R3 clone with integrated ESP8266 wifi.
What I have so far:
The ESP8266 attempts to connect to ...
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Converting ESP32 SPI code to Arduino for MAX6921 IV-18 driver board
I purchased a IV-18 VFD tube driver module, which came with some example code for an ESP32 board. The driver module has a 20 output MAX6921 serial chip to drive the vacuum tube. I want to use this ...
