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Questions tagged [wifi]

Wi-Fi is a trademark of the Wi-Fi Alliance. A Wi-Fi enabled device such as a personal computer, video game console, smartphone, or digital audio player can connect to the Internet when within range of a wireless network connected to the Internet.

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19 views

Can´t load a program into my ESP01 using an ArduinoUno

This is my problem, I´ve been trying to load a program(any program) into mi ESP01 and because I do not have the usb adapter, I decided to use my Arduino Uno to do the work. This is my first time ...
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1answer
39 views

Wifi stopped connecting (Wemos D1 Mini)

I am stumped. I have a few Wemos D1 Mini boards that were working on the local WiFi yesterday, yet today none of them will connect. More puzzling is that I can flash Tasmota on them and they all ...
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1answer
47 views

Mega <> esp8266 comms sending baffling data

I have Wemos Mega-ESP8266 board. I have uploaded a simple WebSocket server on the ESP... #include <ESP8266WiFi.h> #include <WebSocketsServer.h> const char* ssid = "SKYNET"; const ...
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17 views

Cannot POST to server. HTTP code -1. NodeMCU

I am trying to make a POST request with NodeMCU, but I get a HTTP status code -1. Code: #include <ESP8266HTTPClient.h> #include <ESP8266WiFi.h> #ifndef STASSID #define STASSID "Wifi" #...
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18 views

Can't connect my ESP-12F to WiFi with my Arduino Uno

Recently I bought this wifi adapter for my IOT projects that I connected to my arduino uno that seems to not working. I have tried with the arduino ESP8266WiFi library with RX connected to pin 0 and ...
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1answer
30 views

How would you add Arduino WiFi Module using I2C or serial interface?

I am new to Arduino prototyping. I bought an Arduino Automatic Smart Plant Watering Kit 2.0 thinking it was a shield to use with my Arduino Uno WIFI Rev 2. However, it turns out to be a specially ...
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1answer
22 views

WiFi or Bluetooth to communicate between several Arduinos and a Raspberry Pi

So I want to set up a network of outdoor sensors (temperature and humidity) connected to an Arduino (and at some point a second or third Arduino further away with its own sensors). Then I'd like this ...
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24 views

ESP8266 accepts commands but returns nothing

I've been struggling for a couple of days now with the module ESP8266. I have tested it already with another Arduino (RX-RX / Tx-TX) and I could send some test commands and receive the corresponding ...
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17 views

how spilt the sensor values then use them to control servos in nodemcu v3?

#include <ESP8266WiFi.h> #include <WiFiUdp.h> #include <Servo.h> const char* ssid = "Ece Control"; const char* password = "myphonewifi"; WiFiUDP Udp; unsigned int port = 5514; char ...
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12 views

Not able to receive data on node mcu from pubnub

I am trying to send data from one node mcu to another using the same wifi for now. I can publish the data since I can see it from my pubnub analytics but not able to receive the data. When I used 2 ...
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26 views

Send file from ESP to server via FTP

I've a code which records sound to SD, then starts an FTP connection for a limited time. I want to make an automatic system which records then sends the sound file continuously. Now I'm recording ...
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1answer
31 views

why sound appears between VCC and GND pins in esp8266 module?

When I use esp8266 as STATION mode and connect a speaker between VCC(3.3v) and GND pin a sound appears like "doop doop". what is this sound? I test this in version 01 and 12 of esp8266 module and this ...
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1answer
26 views

How would I give an Arduino-based product WiFi credentials?

Let's imagine I create this cool little Arduino-based (replace Arduino with any embedded system that's not a Raspberry Pi) object that does some interesting things but it needs an internet connection ...
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53 views

Send data to API from Arduino with ESP8285 Strange Error

I have an Arduino with few sensors, and I want to send all of data to my API over ESP8285 what is connected to the wifi. Its almost working fine, except one thing. I have these AT commands: String ...
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1answer
19 views

ESP8266 print DNS address (obtained via DHCP)

I've set up an Arduino Clone (Wemos D1 Mini) to get IP-information via DHCP. Everything works fine and I can print the information : Serial.print(WiFi.macAddress()); Serial.print(WiFI.localIP()); ...
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1answer
31 views

WebSocket message with Arduino MKR 1010 using WiFiNINA and ArduinoHttpClient libraries

I am trying to send a WebSocket message to a server. The example for the ArduinoHttpClient library uses WiFi101 but that will not work for the MKR 1010. So I am trying to use WifiNINA instead. The ...
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3answers
55 views

Modifying normal doorbell to get notification

I'm really not used to Arduino and I would like to know if it would be possible to tweak my doorbell, most specifically the bell itself, to embed a small arduino that would be able to send a ...
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1answer
27 views

NodeMCU run sensor code while listening for wifi input?

Is it possible to have code running while also listening for local inputs via ip address? I thought it would go in the 'while' portion but I presume that only responses when the ip is loaded. void ...
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15 views

Arduino Swarm - WiFi and Embedded Communication

I'm developing an Arduino-based swarm, each bot having 1 ATMEGA2560 as its main processor and 1-2 ATMEGA328 as sub-processors and a variety of sensors and actuators, with WiFi (LAN) connection in a ...
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20 views

Is it possible to send data at 100Hz using Wifi bee ESP V1.0 to Mobile (Xamarin)?

Im currently using WifiBee ESP V1.0 and Lilypad Arduino as well as AD8232 for ECG. We are trying to send the data to mobile phone by connecting to PubNub.` if(Serial.available()>0){ str = Serial....
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1answer
22 views

ESP-12F responds only to a few basic AT commands

I previously read a few guides and tutorials about the ESP8266 and i just started using the ESP-12F module as i think that it is a terrific replacement for Arduino with the added benefit of Wi-Fi. I ...
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26 views

HX711 Wemos D1 Weird Characters In Serial Monitor

I am using the HX711 with a load cell attached on my Wemos D1. I have the connections correctly as if I use the same setup on my Arduino Uno board and the same code it runs fine and prints to the ...
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1answer
21 views

WiFi Connection With a Enterprise WLAN

I have an ESP32 and want to connect it to the WLAN at my office. Based on my current knowledge of the Arduino, we use the WiFiClass to connect to a WLAN and then use a WiFiClient to use the WiFi for ...
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1answer
23 views

Can i use Arduino IDE with the Wemos D1 R2 AND also use its ESP8266 module to send AT commands?

I have recently started digging into ESP8266 and learned a little about AT commands and i would really like to add the Wi-Fi functionality in my electronics project, which already uses an Arduino UNO ...
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34 views

How to do a HTTPS post on ESP8266

I am trying to do a HTTPS post on ESP8266 as shown in Postman below But I keep getting: 'HTTP/1.1 401 Unauthorized'. Can someone please help me with how to build up the headers correctly in the ...
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37 views

WT8266-S1 WiFi module

WT8266-S1 WiFi module in my hand I want to encode this module with Ardino IDE. I have a coded program for Arduino NodeMCU 1.0. How can I convert it to the WT8266-S1 WiFi module? Do you have the WT8266-...
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0answers
75 views

Arduino HTTP post image to external server

I'm trying to send an image from SPIFFS to my external server. When pictures are taken, they are saved into "/pics/" directory within SPIFFS. Ultimately, I'd like to post all the images saved onto "/...
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2answers
108 views

Arduino WiFi Rev2 JSON String

I have been trying to use the WifiNINA library to access the JSON output from the following API using the WifiNINA library and the Arduino Wifi Rev2. This is the code that I have been using (it is an ...
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1answer
28 views

NRF24L01 Networking [closed]

We checked Xbee, ZigBee and other alternatives already and we're trying to figure out a way for good and cheap network system. NRF24l01 looks good but 32 bytes not enough actually. Even so looks like ...
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1answer
40 views

Sending GPS data through a WiFi module

I'm trying to send GPS data using a neo-6m GPS module through WiFi using esp8266 module, I have both of the modules working alone, but when I try using both the WiFi works but won't send the data from ...
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79 views

Esp32 sending a wav file to API via POST

I'm trying to send a .wav file to an API with an ESP32 using a HTTP Post request with a multipart/Form-data content type. I can already send the API Key as it is a plain key and get a return from the ...
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28 views

Setting up WiFi on NodeMCU with wrong password drops ESP8266WebServer connection [duplicate]

I am trying to build a simple demo with NodeMCU module: NodeMCU opens AP and sets up web server Client connects to this AP, sends payload to web server to setup WiFI on the module and receives ...
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2answers
94 views

How to communicate between a webcam and an Arduino UNO and get the live feed on mobile using ESP8266? [closed]

I am working on a project of making a Smart Robot Car using Arduino UNO, L298N Motor Driver Module, ESP8266 Esp-01 WiFi module and RemoteXY app for controlling via smartphone over WiFi. My question ...
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1answer
69 views

How to control DC motor speed with L298N and Node MCU?

I want to control an RC car with a joystick in mobile. Currently, I can only make the motor move forward and backward but not able to control the speed. Node mcu is used as a processor to receive the ...
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2answers
82 views

WifiClient and aREST on esp32 - loop until new instructions recieved?

I've created a simple sketch for an esp32 that hosts a REST API that can be accessed via HTTP. Based on the instructions received from the client, the esp32 controls some neopixels with some various ...
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28 views

Arduino UNO and ESP8266-01 Wi-Fi cutting out after few seconds

I followed this tutorial: https://www.youtube.com/watch?v=2cjufbgOBYo My serial output in Arduino editor is this: AT AT AT AT AT AT AT AT+RST ATE0 AT+CWMODE=2 AT+CWDHCP=0,1 AT+CWSAP="RemoteXY","...
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1answer
41 views

WiFi connection times out if credentials retrieved via serial terminal

I've implemented a small WiFi connection procedure into my ESP32 project. The available networks get printed with index, then I'm entering the index and retrieve the network name from it. The password ...
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0answers
37 views

Easy way to store Wi-Fi data on Arduino and ESP8266 [closed]

I'm using Arduino UNO and ESP8266 for my application which has to share data over a public network. At the moment, I hard code the ssid and the password of my Wi-Fi network directly in the Arduino ...
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3answers
94 views

REST API on Industrial 101 (Yún family) lags, then crashes

I have tried to set up a very simple REST API on an Arduino Industrial 101 (which is, as far as I understand, equivalent to a Yún). The Arduino is hooked up to a temperature sensor, which value is ...
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1answer
30 views

Not able to convert String to Integer when receiving data from pubnub?

I did managed to upload mpu9250 sensor data on PubNub and nodeMcu but not able to use the received data to control servo Look at the Port reading and see that servo angle is still showing '0' Code:-...
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2answers
56 views

My ESP8266 web server is only displaying text, even after ensuring content type is text/HTML

So I just got my two ESP8266/ESP-12E WiFi development boards in the mail as I am trying to set up a few home automation devices in my house. I've gotten much further than I thought I would today, ...
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1answer
30 views

How to upload sensor data on pubnub IOT with JSON Format?

I am trying to send MPU9250 sensor data to Pubnub IOT platform using node mcu, but not able to do it since the sensor data is not in JSON format. I know about publishing string but don't know about ...
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1answer
169 views

How to interface MPU9250 and NodeMcu?

I am trying to send MPU sensor data to Pubnub IOT platform but not able to do it since there is some unknown problem. There is no error in code but following issue pops up in com port:- It looks like ...
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0answers
31 views

How to speak from a client to another client over a Server - ESP8266?

In the last few days, a problem kept me busy. I tried to communicate from a client to another client over a server, like that: Client1 -> Server -> Client2 Client1 sends a small message (like the ...
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0answers
62 views

Secure connection with ESP8266 and socket connection

I want my system to stay connected 100% of the time. I'm using a TCP Socket connection on ESP8266. So, I created a test Sketch like this below (and a NodeJS server app). Everything works fine, that is,...
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2answers
281 views

Parse a large json response with ESP8266

I'm doing a project where my Arduino uses an external ESP8266 wifi module (with AT firmware) to send http requests and receive server response. I'm trying to get an NBA scoreboard, and here's what my ...
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0answers
38 views

Memory management issues with Chars

new to C - I am struggling with a memory management issue which I think is related to the char array variable Cars in the following code. I can run this program once or twice just fine and print my ...
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0answers
22 views

Sending data to ThingSpeak with esp13 shield [duplicate]

Well, I am trying make a project which is reading motor RPM sending to ThingSpeak. with this I am planning to check my motors speed at home. I can made it with esp8266 modul but I saw original ...
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0answers
190 views

ESP32 dev board unable to connect to home WiFi

I just acquired an Arduino style ESP32 dev board, and have been trying it out. Everything hardware wise appears to work fine, however, upon trying the "HelloServer" example, the board appears to just ...
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1answer
127 views

Error - invalid conversion from 'char' to 'const char*', Not able to connect on pubnub server using node mcu [duplicate]

I have node mcu with ESP8266 wifi module. When i am trying to upload an example code then its not working. This is the Error:- inline PubSubClient* PubNub::subscribe(const char* channel, int ...