Questions tagged as 'arduino'

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Exception (9) in the Arduino IDE with ESP8266

Beacon Code: void beaconLoop() { DEBUG_SERIAL { Serial.print(F("[beaconLoop] Sending beacon on channel ")); Serial.print(wifi_get_channel()); Serial.print(" ...\n"); } DEBUG_LED blink(1, 50); hdrEspLocRequest_t hdrEspLoc;...
asked by 08.04.2018 / 11:23
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Generate int from RGB

I'm doing a GUI program with Arduino on a 16-bit lcd display . For me to get a little more color control, how can I get an int (like 16-bit color) from RGB? I'm using this display:     
asked by 01.04.2018 / 22:56
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RFID Read Pause

I'm developing an RFID reader using Arduino + RFID module RDM6300, I am able to perform the readings of the cards, however, the readings are being repeated several times when the card is approached. I have already tried using delay(); and...
asked by 28.03.2018 / 20:25
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How to disconnect Step Motor 28BYJ-48 5v?

Through commands via Serial send commands so that the stepper motor turns clockwise and counterclockwise, I would send command to perform the stepper motor shutdown. Model: 28BYJ-48 5v Stepper Motor I'm using the Stepper.h library I...
asked by 25.03.2018 / 19:18
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Com3 there is no windows form for arduino

I'm trying to create a program that sends information from windows form to arduino but an error says that com3 (the port I'm using) does not exist. We are using the xy coordinates of the mouse to control two servo motors. Everything works fine,...
asked by 15.03.2018 / 15:05
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Schedule actions with arduino and RTC

I'm making a luminaire for aquariums where in theory the sunrise, midday sun, dusk and on random days simulate a lightning storm, try to get closer to the fish habitat of rivers and avoid the stress of simply in the morning the maximum light fro...
asked by 11.03.2018 / 22:55
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Serial communication Arduino

I am trying to solve a certain exercise in class by my teacher. Basically the exercise is: With two arduinos prepared to make serial communication between TX and RX, it must transmit four code sequences through a two-key keyboard. Pin 0 - RX...
asked by 24.11.2017 / 00:22
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Save to Arduino's EEPROM Memory

I want to do a Smartphone-controlled lock design. Basically, the user has the option to change the password by the Keypad, but I want the new password (String) to be saved in the Internal Memory of the Arduino (EEPROM), but I'm picking it here b...
asked by 16.11.2017 / 13:47
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Iterating an Arduino String

I would like to perform the following operation: Read a String (coming from bluetooh). This String will have 6 positions, each one refers to a led. If 0 turns off the LED if it does not light! How do I iterate this...
asked by 22.11.2017 / 03:49
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Problem with the data acquisition time function provided by Arduino

I'm doing a plot vs time temperature via Arduino in a graphical interface. The program is catching on. Problem is in the function of time: # -*- coding: utf-8 -*- import matplotlib import matplotlib.pyplot as plt from PyQt4 import QtGui, QtCor...
asked by 18.10.2017 / 18:37