Questions tagged [reset]

Use this tag for discussing resetting the processor.

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21
votes
1answer
63k views

Reset an Arduino Uno in code

Is it possible to reset an Arduino (i.e., to reboot it) from code (i.e from the sketch itself)? I know that is possible with a special circuit but is there a chance to make it just with code? Below ...
5
votes
2answers
6k views

Arduino serial port reset in Serial monitor & Python

So am I using an Arduino with a shield to gain some voltage values for an ECG. I am then plotting that data in Python. However whenever I "observe" the serial port, be that through the Arduino serial ...
3
votes
5answers
6k views

How do I repurpose Arduino's reset button

Is there a way to repurpose the reset button for the code, like an on-board button? I don't need it to reset, but it would be useful to make it run through a list of RGB LED cycles.
3
votes
1answer
360 views

How does one design for the power on transient conditions?

Following on from the question Reset an Arduino UNO by an command (software) and the excellent answer provided by mpflaga, the comment addressing option (1) suggests that there are design ...
0
votes
2answers
3k views

Arduino Pro Micro bricked?

I have a Pro Micro board at which tried to upload a sketch with sparkfun's Pro Micro 3.3v processor selected. After the upload completed successfully the board did not run again and is not even ...
6
votes
2answers
53k views

How does the reset button work on the Arduino?

I'm confused about how and when to use the reset button on the Arduino. Do I simply press the button while it is on? Is it simply restarting the board or clearing the uploaded code as well? Currently ...
5
votes
4answers
14k views

Watchdog timer stuck in restart loop? (green led flashing)

I am trying to set up a way to reboot arduino on command. The code below should do that but it seems like my arduino just get's stuck in some sort of a loop where I cant upload or get any serial ...
3
votes
1answer
176 views

ESP8266 always resetting after 65 second of running

I have a simple code where ESP8266 is asking MySQL database about actual state of LED (whether 1 or 0) and when DB has 1 ESP8266 turns LED on... But my problem is after 65-66 seconds of server running ...
1
vote
1answer
348 views

Run different code on different type of reset in arduino nano

I would like to program the arduino such that if I reset it by disconnecting and then reconnecting the usb.. A particular led glows BUT If I press the manual reset button on my nano... I want a ...
0
votes
1answer
4k views

When the Arduino is in reset mode are the digital pins high impedance?

I have an Arduino (Arduino A) hooked up to an external FRAM chip and I want to be able to pull the Arduino A's reset pin to ground to keep it in a constant reset state. Then I want to hook up another ...
0
votes
1answer
188 views

Deep Sleep Reset with Shock Sensor

I am trying to design a circuit that wakes my ESP8266 (Wemos D1 Mini) from deep sleep using a shock sensor. I can achieve this using the reset pin but I need it to ignore further requests to reset to ...
0
votes
0answers
796 views

Unable to reset arduino with RESET pin

I am using a custom built arduino UNO for some personal projects. I am using a custom optiboot bootloader given by Nick in this post. This was done to prevent the three LED flashes on digital pin 13. ...