How to Reset Arduino – Try All Methods

It is important to know and understand various techniques that help to reset Arduino. If you keep yourself literate with all the methods useful to reset Arduino, you won’t ever find yourself stuck in any of the projects.How to Reset Arduino

How to Reset Arduino

In this article, we have listed down four such methods that are proven effective to reset Arduino. Read further to know more about them.

1. Arduino Hardware Reset

Once the reset button is pushed on the Arduino board, AVR gets reset. Besides, the Arduino IDE also sends a specific signal, which causes the Arduino board to reset the AVR.

2. Arduino Software Reset

Although there are a couple of ways to reset an Arduino with software, not all ways are accurate and effective.

It is advisable to try Reset via Watchdog Timer. It is a super clean and easy way. Kindly set the watchdog timer and allow it to time out. The watchdog is uniquely designed to restart the microcontroller after a configured period of time, in case if the microcontroller is stuck. However, in regular operations, you must reset the watchdog timer to prevent it from resetting the microcontroller.

In case if the bootloader does not support the watchdog, then you must install a bootloader that supports the watchdog. Please note that in cases when you don’t have a bootloader that can handle being reset by the watchdog, then the Arduino might enter into an infinite reset loop. So the next best thing is to check first.

Method 1: Via Arduino Reset Pin

When you take a look at the Arduino board, you will notice a RESET Pin on the Arduino board. Till now, you might be wondering about its use. Well, this pin is the RESET Pin that helps to reset Arduino.

Firstly, connect the Arduino RESET Pin with any of the digital pins. Then upload the below-mentioned code in the Arduino board:

void setup() {  

 digitalWrite(Reset, HIGH);

 delay(200);

 pinMode(Reset, OUTPUT);

 Serial.begin(9600);

 Serial.println(“Resetting Arduino using commands”);

 Serial.println

 delay(200);

}

void loop()

{

 Serial.println(“A”);

 delay(1000);               

 Serial.println(“B”);

 delay(1000);               

 Serial.println(“Resetting Arduino is in process”);

 Serial.println();

 delay(1000);

 digitalWrite(Reset, LOW);

 Serial.println(“Arduino will not reach there”);

}

After uploading this code, open the Arduino Serial Monitor. You will notice that the reset has worked.

Method 2: Via Arduino Reset Button

Now let’s take a look at this final method to reset Arduino. Unlike in the method of Arduino Reset Pin, we are not going to use any hardware pin, and instead, we will be doing everything in programming. In case, if you are not well versed with Arduino programming then you should take a few lessons beforehand. All you need to do is upload the below-mentioned code in the Arduino Board:

External-Button

void(* resetFunc) (void) = 0;

void setup() {

 Serial.begin(9600);

 Serial.println(“Resetting Arduino using commands”);

 Serial.println

 delay(200);

}

void loop()

{

 Serial.println(“A”);

 delay(1000);               

 Serial.println(“B”);

 delay(1000);               

 Serial.println(“Resetting Arduino is in process”);

 Serial.println();

 delay(1000);

 resetFunc();

 Serial.println(“Arduino will not reach there”);

}

Simply open your Arduino Serial Terminal, and you will see the same output as seen in the previous method.

Parting Thoughts

The above-mentioned methods are effective and simple to follow. You might come across a few of the other methods to reset Arduino, but use your discretion before employing any of those methods.

Happy Reseting!

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