Arduino

Questions tagged [reset]

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Use this tag for discussing resetting the processor.

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38 views

Arduino Nano randomly resetting

I am currently struggling with an intermittent problem with an Arduino project. Background I am using a LabVIEW program to control a few pieces of hardware. One of them is a NEMA 17 stepper motor that ...
1
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1answer
75 views

Standalone ATmega328P stops responding when RX is connected

I have followed this demo and have set up a standalone ATmega328P being programmed from a Raspberry Pi via the SPI lines. I have also added a 16 MHz crystal with 22 pF capacitors, as well as I have ...
3
votes
1answer
114 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 ...
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0answers
22 views

Use serial communication on Sparkfun SAMD21 mini board

I am working on an economic module to be able to use serial communication with the Sparkfun SAMD21 mini development card. And I have one, the DTR (of my CH340G) do I have to connect it to the reset of ...
0
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0answers
33 views

Trigger ESP8266 reset pin on broken connection

I have an ESP8266 which I wish to place in deep sleep until a reed switch senses a door being opened. The ESP8266 is woken from deep sleep by briefly raising the RESET pin high. In my original design, ...
5
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2answers
158 views

Jumping to bootloader from application code in atmega328p

I'm trying to program an Arduino Uno (atmega328p) using only the serial Tx/Rx lines (no DTR, so no automatic reset). This is so I can upload code via WiFi/TCP using an ESP-01. To achieve this, I need ...
1
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1answer
52 views

EMI resets atmega on switching ON relay with inductive load like a 230v fan

I am making an automation device. I am using an atmega8a to control 6 relays. The setup is standard, 220v load, 5v dc coil, flyback diode and an NPN transistor to trigger with atmega pin. The problem ...
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0answers
44 views

ESP 8266/32 - How to avoid immediately turning Off the device with RST pin conencted?

I would like to ask how to avoid the turn of the ESP8266/32 in case the door switch will be in the state closed? I am solving the situation when the doors are opened, the device is booted from the ...
0
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1answer
37 views

Reset HC-05 from within Arduino sketch

I have an HC-05 Bluetooth module attached to an Arduino Mega; the module is paired with a Raspberry Pi and fed data via a python program; there's roughly one send and one receive per second of about ...
0
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0answers
23 views

Can someone explain the Uno schematics for the RESET via DTR connection? [duplicate]

I am wondering why did the guys at Arduino connected twice the C5 capacitor to the RESET line and not only once (via the RESET-EN jumper). Why is there a connection bypassing the RESET-EN jumper? This ...
1
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1answer
160 views

Using RST pin as external power switch

I have Arduino Nano with powered over USB. I have the request for external (physical) slide switch acting as power on/off for Arduino even if USB is always connected. Looking at documentation and ...
1
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3answers
82 views

Arduino Mega keep states after reprogramming

Based on: https://forum.arduino.cc/index.php?topic=440978.0 And some previous experience with Arduinos. What I would like to accomplish here is that I have a 8 channel relay board with the relays in ...
1
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1answer
403 views

AsyncWebServer giving wdt reset

I am using 3 Esp32 modules. One being master and other two being nodes. Nodes are connecting to the master's AP. Master is connected with GSM module to execute the web api. Master esp is having a ...
-1
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1answer
147 views

ESP8266-01 Resetting when DC motor runs

DC motor: 3-6v Servo sg90: 3-7.2v Esp 8266 01: 3.3v I have 2 Arduino Uno both has their own ac-dc power adapter. Lets say, 1st Arduino is Ard1 and 2nd is Ard2. The Ard1 communicates to a web ...
1
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1answer
85 views

ESP8266 reseted due to relay / AC plugged

My Wemos card is reseting for unknown reason. For example, the pump plugged on the relay works fine till 1am and then the pump stop. After a few research I figured out the ESP should reset because all ...
0
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2answers
39 views

Resetting Arduino UNO code (newbie)

So today I started to learn Arduino uno. I have an LM35 temperature sensor and I got what I needed from it. Now it's just keep calculating till I plug it off. I know there is a reset button. When I ...
1
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0answers
65 views

Infinite loop if Serial.println() is not used

I'm trying to reset my program from software using the third method described here: Reset an Arduino Uno in code The function is basically showing some data on an OLED display and afterwards should ...
0
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0answers
101 views

Motor keeps spinning crazily after UNO board reset

I'm using a NEMA 17 stepper motor with A4988 motor driver and Arduino Uno board. I have used full microstepping (1/16th, so one revolution = 3200 steps). I'm coming across this strange problem. ...
0
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0answers
65 views

How to unbrick an ATtiny45?

I'm using an Arduino Uno as ISP Programmer to program a standalone ATTiny45 on a breadboard. Usually it works well, but I just uploaded a code like this: void setup() { pinMode(0, OUTPUT); # pin ...
0
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1answer
59 views

How can I clear the memory of my Arduino in this case?

I have made a code using involving HID control. But it seems that I messed up, but I can't upload a new sketch(nor edit the wrong code), because my Arduino is constantly doing things like Ctrl+Alt+...
-1
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1answer
204 views

Why should I connect GND to RST to send data through Rx using USB-TTL?

I've found that when I use Arduino Nano connected with USB everything is working great, and when I tryed to use it with USB to TTL connector I've understood that I can only read data. I tryed to ...
0
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0answers
26 views

Resetting the MEGA 2560 board [duplicate]

I'm a high school student working on a robot arm project that uses an arduino board. I had uploaded my previous program to my board, but I've since changed my code and want to reset the board, but I ...
0
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1answer
731 views

Nano 33 IoT rescue from the dead: No USB. No upload mode

First of all: my board used to work fine. Now my Nano 33 IoT turns ON (green light) when connected to USB on Mac but: doesn't enter in upload mode after pressing twice on board button. doesn't shows ...
0
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1answer
156 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
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2answers
52 views

nodemcu GPIO6 clock

is there a way that i can declare gpio6 (CLK) as an input without getting a wdt reset? I'm somewhat new to circuitry, but my boss wants to use it(GPIO6) to talk with external devices. I have more ...
0
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2answers
74 views

Reset arduino nano after disabling tx/rx

I know, i am a bit dummy sometimes and i don't know why i actually did this but here it is. I have an arduino nano and i want it to use an external power via the the Vin port using a 12V external ...
2
votes
0answers
521 views

How to enable auto reset in Arduino Leonardo?

I am trying to program an ATMega32u4 microcontroller through arduino IDE. I have added external oscillator(16Mhz) and capacitors and few other connections according to the Schematic. I had put a ...
1
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0answers
129 views

Unable to upload to Arduino Uno From Raspberry Pi

I am trying to upload code to my Arduino Uno from my Raspberry Pi 3B+ and have been following this guide. After following the instructions and trying to upload, I received this error message. pi@...
1
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1answer
710 views

Firmware backup and restore

I need to have the firmware stored somewhere on the board in order to get back to it after flashing a new firmware. Is there a way to store a backup of the firmware somewhere, and use a button to ...
0
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1answer
205 views

Reset Button not working + Can't Upload code , What is wrong?

I was testing and debugging a code I wrote for a robot with 3 stepper motors on (Arduino Uno + CNCShield V3 + a4988 stepper drivers). I want to disable drivers at will. so I bypassed EN pin on 2 of ...
2
votes
2answers
450 views

ESP12E Soft WDT reset stack trace leads to libraries

Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly when the web client is closed but when i leave the ...
1
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0answers
375 views

Cant get rid of Soft WDT reset using ESP8266

Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly but after while i always get a watchdog timer reset. (If ...
1
vote
2answers
112 views

Store value in EEPROM to perform different actions on reset?

I want the same button to wake up (reset) and put it to sleep but this is hard if the button is tied directly to the rst pin. My thought was to read and store a value in EEPROM so tell the chip what ...
0
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2answers
1k views

AVR software reset without watchdog

I wrote a generic avr program wrapper which already use the watchdog timer to restart - and after the watchdog reset - recover the the bad situation. After this recover process i have to restart the ...
0
votes
1answer
2k views

Nodemcu 1.0 and boot mode (1,6) after soft reset

I have a problem with a nodemcu 1.0 (lolin) board. Sometime a soft reset is performed from the watchdog and the board freezes in boot mode (1,6) (I have to manually reset the board to restart it). I ...
1
vote
1answer
67 views

Arduino Resetting in Automotive Application

I have a complicated problem with my Arduino circuit being reset/crashing, I will try to describe the best I can. The Setup: Basically I have a Arduino 328P circuit that is monitoring some ...
5
votes
2answers
1k views

Power on reset with arduino uno can never happen. Can this be fixed?

When an Arduino Uno is powered on, the USB chip's DTR output pin may (is, in fact) low for a while. This means that the capacitor C5 is connected from the 328p reset pin to ground. Thus, when power ...
2
votes
1answer
507 views

Triggering a soft reset (Arduino Leonardo)

I want to trigger a soft reset on my Arduino Leonardo, and after some searching settled on using the watchdog timer, as it seemed to be the easiest and cleanest way to do it. However, I don't think ...
0
votes
2answers
1k views

D1 mini does not resume operation as expected after deep sleep

I'm trying to get the D1 mini to return operation after ESP.deepsleep(). The code below compiles and gives the expected output for the first run. Five seconds after the announcement that that the ...
0
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2answers
2k 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 ...
1
vote
1answer
5k views

ESP8266 - Sending a software Reset Command

I have an ESP8266 running an Arduino code to control a dual relay device ( Up, Down, Off ), both from a physical switch and MQTT commands. After mounting the device in place I have no access in case ...
0
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3answers
82 views

Is it possible to insert your own routine into the Reset procedure

I'm working with ATmega328 NANO boards, and I would like to know if it is possible to INSERT my own routine, to be included in the things done during reset, BEFORE any pre-C initialization is done, ...
2
votes
1answer
68 views

Using external reset to trigger radio receipt

I am designing a low-power RF application using an ATTiny (Adafruit Trinket). When the system receives a radio signal, it needs to read some sensors, and transmit with that data. Because I am short ...
1
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0answers
87 views

Motor unexpectedly moving at reset

I'm playing with the standard L298N motor board and Arduino MKR 1000. However something strange happens: when I upload a new firmware and when I turn on the Arduino power supply (every time Arduino ...
1
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3answers
2k views

Using attachInterrupt() to make a reset button for my code?

I have used attachInterrupt() to reset my program to the beginning. It actually interrupts while running the 3 states as shown below inside of the if statement but when I press the actual button it ...
2
votes
1answer
178 views

Arduino(s) not resetting on Serial connection lost / re-established - why?

it seems that I accidentally found a way to make my two Arduino nano clones run without resetting on serial connection close/reconnect. On one hand, this behavior is much closer to the desired ...
0
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0answers
150 views

Loop being restarted before it finishes?

I have a Loop process that does various I/O and delay operations and also logs to the serial port so that we can review the activity. We what I think is the loop being interrupted. Normally the ...
0
votes
2answers
509 views

ATmega 2560 with Arduino bootloader running issue

I have designed a board based on an ATmega2560 chip and I burned the bootloader by following this tutorial. Now I am able to load Blinky and other programs using an FTDI cable. But the issue I am ...
1
vote
1answer
3k views

Arduino Due not executing code after power on

My Arduino Due does not execute its code when powered on after being powered off for ten seconds or longer. I have to press the reset button for the code to execute. I've read some older threads ...
1
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1answer
227 views

How to prevent optocoupler to activate when resetting the arduino? [closed]

From various example on how to use optocouplers ( eg 4N25) I gathered that they work in inverted way meaning that for the optocoupler to output a signal, the input LED must be OFF. This is very easy ...

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