An IC that offers Wi-Fi networking compatible with b/g/n standards. It also has integrated TCP/IP protocol stack. Extremely popular along IoT community as a low cost and powerful board.
0
votes
0answers
24 views
Connecting to WPA-2 Enterprise WiFi (eduroam)
My Problem
I am using Adafruit's HUZZAH EPS8266 board to connect a Teensy 3.2 board to my university's WiFi. However, ESP8266's Arduino ESP8266WiFi library does not provide support for WPA2-...
3
votes
3answers
43 views
Scan IP address of ESP8266
I am working on a project in which, the mobile app/browser sends HTTP command to ESP8266 in AP mode. The default IP address of ESP is 192.168.4.1. Therefore in order to connect the ESP to WiFi, the ...
0
votes
0answers
31 views
C code example for ESP8266 [on hold]
I have an Arduino Uno and I just bought the ESP8266 with the intention of sending email alerts from the Arduino when a sensor is triggered. I am trying to figure out how to initialise, use and test ...
-1
votes
2answers
24 views
Arduino Nano + ESP8266 and saving to EEPROM
I am going to create a project with a friend, but I have some technical questions.
The Arduino Nano has an EEPROM capable of storing the known WiFi connections. Basically what I want is say "Arduino, ...
0
votes
3answers
28 views
Scan multiple ESP8266 [on hold]
I am working on wifi based LED project which involves various ESP to be connected to router. Basically grouping of ESP has to be done. The android app sends HTTP command to IP address which is given ...
0
votes
2answers
26 views
create dynamic mqtt topic [on hold]
I have a problem using the PubSubClient. I want to create dynamic mqtt-topics based on a predefined prefix and a suffix and my ESP-macaddress.
My problem is that the PubSubClient requires a cost char*...
1
vote
1answer
26 views
Can I switch a pulse solenoid from the onboard 5V/3.3V power source?
I have two pulse solenoids. One is 6V...
http://www.ebay.com.au/itm/282002733837?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
and the other is 3.6V...
http://www.ebay.com.au/itm/...
-3
votes
0answers
19 views
Stuck w/ Digital Payment Interface. Shred some light :) !! & Help Me build it :)
I want to make a vending machine in my college to dispense boiled eggs 24*7, to keep going all night:) But I am completely unaware how to authorize digital payment. My aim is to create a vending ...
0
votes
0answers
26 views
Connection ESP8266 to ESP8266 Client Server can't Connect, Help me?
I have a project to connecting dual esp8266 using client server method, my expectation the server can get command from user from web request, and the request will be forward to client from server to ...
0
votes
1answer
29 views
I am not able to use esp8266 12e with arduino
I am perusing my engineering degree. And i want to make project with connecting multiple esp8266 with router and control multiple relay boards
I am unable use esp8266 12 e with arduino. I used this ...
1
vote
2answers
33 views
Sparkfun ESP8266 Wifi Shield does not receive data
When I make any GET request to my shield, the only thing I get when I read the request is '\r\n'. I am sending query parameters, and when the request has been read in the past, there was the full ...
0
votes
0answers
57 views
Protocol suggestions for an ESP8266 based WiFi LED solution [on hold]
I am working on a commercial design which is basically a WiFi based LED Light. I have an ESP8266 WiFi module as my main controller. I have used a simple HTTP Protocol to communicate with the Light ...
-1
votes
1answer
46 views
Multiple client server over wifi
Trying to setup a server on Arduino to support multiple clients,
I am able to support one but I don't want to flush that client to make another connection.
#include <ESP8266WiFi.h>
const char* ...
0
votes
1answer
30 views
Arduino as analog to digital converter for temperature sensor
I have an ESP8266 module that must receive some data and send it to a server, my problem is that this data is given by a temperature sensore and a light sensor which must be connected to analog pins ...
1
vote
2answers
22 views
Compiling sketch vi command line
Since I don't like the text editor of the Arduino IDE, I decided to write a python script that I can invoke from my text editor to compile and upload my source. I program the popular esp8266 chip. So ...
1
vote
0answers
42 views
Problem with sending a POST request using the WiFiEsp library
I'm using an ESP8266 version 1 with the WiFiEsp library to connect to WiFi, and that works just fine.
I'm setting up the device using the same code as in the example WebClientRepeating.
I need to ...
3
votes
1answer
67 views
PCF8547 Wire.write explanations
I am using an ESP8266-12E with a PCF8547.
I have managed to turn on and turn off LEDs using these two things.
I am using these three commands to do it.
Wire.begin(SDA_PIN,CLK_PIN);
Wire....
1
vote
1answer
65 views
How to use ESP8266-12E with PCF8574 as an I/O extender [closed]
I am using ESP8266-12E with a PCF8574 as an I/O Pins Extender.
There are videos on youtube to use the PCF8574 with an ESP8266-01, but my problem is that I'm unable to analyze the pin connections with ...
1
vote
0answers
36 views
Connecting ESP8266 to local webserver [closed]
I am running an Apache Server on my pc, by which I am hosting a local website. Everything is connected to router. Now I want to post reading of temperature from my arduino to the localhost via esp8266....
1
vote
1answer
96 views
Wiring and Connecting WS2801 to NodeMCU ESP8266
After hours of searching for a solution and try many ways of wiring, I must asking here for Help:
I'm using a ESP8266 (ESP-12E) with a WS2801 - 4 Wire LED Strip and using this Pinout-Diagram to ...
1
vote
0answers
23 views
ESP-12f SoftwareSerial read fails
I am trying to use esp8266 version of SoftwareSerial, espsoftwareserial, on an esp-12f.
If I initialize an object using:
SoftwareSerial gpsSer(14,12, false, 256);
or
SoftwareSerial gpsSer(12,14,...
1
vote
1answer
33 views
Odd symbols in ESP8266 responses to AT commands
I used the code below to control an ESP8266. I am getting some unknown symbols in the responses.
#include <SoftwareSerial.h>
const byte rxPin=2;
const byte txPin=3;
SoftwareSerial ESP8266( ...
-1
votes
2answers
64 views
Setup arduino uno with ESP8266 ESP-1
Iam trying to set up the arduino uno with the wifi module ESP8266. I use this schematic setup:
I have followed this tutorial: Tutorial ESP8266
Thereby I removed the Mega328P Chip like it says above, ...
0
votes
1answer
73 views
Arduino ESP8266 Webserver
What I would like to do is control my garden lights using the ESP8266. For this I use the Arduino approach from here. This works great, I use bootstrap and jquery even :D all is well!
Switching ...
-1
votes
1answer
30 views
Arduino Uno + aRest + ESP8266
So, I can use the aRest library to program to the ESP8266 standalone, but if I have the ESP8266 connected to the Arduino Uno, can I still use the aRest library? Or will this no longer work? I am ...
0
votes
3answers
51 views
use button to select variable
i have a need to use 3 buttons a a simple option/variable selector at sketch start up ...
Pretty much at startup , script must wait for button press ( one of 3 ) , when button is pressed , use that ...
1
vote
3answers
101 views
NodeMCU ESP-12e - Timing errors
I'm using the ESP-12e with Arduino IDE. With that I'm trying to build a clock with a WS2812B LED strip matrix that I've build.
When I try to display the seconds on my matrix there are strange timing ...
0
votes
0answers
35 views
Arduino Uno and ESP8266 serial monitor issue
I plugged in the Arduino Uno and the ESP8266 following this schema:
When I enter "AT" in the serial monitor, I get an "OK". I can also connect to my wifi using typical ESP8266 commands.
What doesn't ...
1
vote
1answer
81 views
Low power wifi temperature sensor [closed]
I want to make a wifi-enabled temperature sensor and place it inside my HVAC system to measure and push the temperature to a central server, every minute or so.
I have a LoLin NodeMcu v3 unit laying ...
1
vote
2answers
78 views
ESP-12e, Arduino IDE, NeoPixel Strip - Flickering
I have a NeoPixel RGB strip connected directly to my NodeMCU ESP12-e board. I'm using Arduino IDE with the NODEMCU 1.0 ESP 12-e module to programm the board.
ESP12-e | NeoPixels
GND ---> GND
3....
2
votes
1answer
146 views
ESP8266 Programming using ESP-01 to USB converter
I am new to ESP8266. To ease out the task of programming esp8266, I bought this: ESP-01 ESP8266 Programmer CH340G Chip USB WiFi Wireless UART GPIO0 Adapter.
Configured Arduino Interface to run AT ...
-3
votes
1answer
45 views
Arduino & ESP8266
I connect my ESP to Arduino to my PC.
If I send AT commands from my serial monitor, I receive full response. I use 115200 and both NL & CR in my serial monitor.
ESP TX is connected to TX Arduino,...
-1
votes
1answer
34 views
Serial communication between NodeMCU and Arduino doesn't work when I try to use the DC jack or Vin
I have a unidirectional communication from NodeMCU (ESP8266) -> Arduino UNO. The communication works when I power both the devices to my computer. Note that since it is from NodeMCU to Arduino only, I ...
3
votes
1answer
102 views
ESP01 connected to Arduino cant read from UART while connected from external power source
I have Arduino UNO + connected NodeMCU ESP01 module into it that communicate via serial pins. NodeMCU is powered from Arduino 3.3V pin. My idea is that ESP01 receives MQTT messages, sent it to Arduino ...
1
vote
0answers
28 views
Item positioning with BLE [closed]
I need to track on about 500 boxes in warehouses, the trace should be indoor and outdoor. the accuracy is not so important -> 5-15 meters is enough .
The warehouse size including the yard is about ...
1
vote
3answers
76 views
Arduino ESP8266 module communicate through Arduino IDE terminal [closed]
I am completely new to Arduino and trying to setup the Arduino and ESP8266 module. Thereby I used this scheme to set it up:
Where I use this code:
`#include <SoftwareSerial.h>
const byte ...
-1
votes
2answers
78 views
Error in the arduino code
This is my arduino code for interfacing with an ESP8266:
#include <ESP8266WiFi.h>
int incomingByte;
String value;
char a;
int flag=0;
String valueserial;
int valueint;
const char* ssid = "...
1
vote
0answers
36 views
AT+CIPSEND command closed the connection automatically
I don't know why CIPSEND command closed the connection after sending done without CIPCLOSE command. Is it normal?
If I want to keep the connection, what should I do in this case?
0
votes
0answers
35 views
Uni-directional communication between NodeMCU and Arduino spits out garbage
I am sending data from ESP8266 (NodeMCU) to Arduino using serial and 9600 baud rate on both sides. Since it is uni-directional and from NodeMCU to Arduino, I am not using a voltage regulator and I ...
0
votes
0answers
54 views
Arduino UNO and ESP-12E serial connection
I just bought an ESP-12E module and I don't have a usb to serial adaptor. How I can connect ESP-12E via ARDUINO UNO to PC.
I want to use Arduino IDE to upload code to ESP via ARDUINO UNO.
Here is the ...
0
votes
1answer
48 views
Cast from uint8_t* to char - loses precision
I am trying to decode a received (via websocket) message (JSON) on my ESP8266.
The websocket library provides the data as uint8_t. The JSON library only understands char arrays. As far as I know ...
-1
votes
1answer
79 views
Arduino Uno Wifi Module ESP8266 AT Command Test error [closed]
When i Connected Rx>Rx (Rx Of module To Pin 0 Of Arduino) And Tx>Tx ( Tx Of Module To Pin 1 Of Arduino), The AT Command Test shows The Following error With Scrambled Words, but when I Connect Rx>Tx (...
-1
votes
1answer
75 views
ESP8266 Upload hex file Arduino IDE
I am using ESP12E Wifi module, using library based on Arduino. Is there any way I can upload hex file of the project to esp8266 using Arduino or any tool?
I need to send hex file instead of code to my ...
1
vote
1answer
160 views
Arduino resets my MacBook Pro
Every time I connect the Arudion Uno to the Mac through USB port, the Mac restarts. Why is this happening? How can Arduino make such a sophisticated machine reset? This also happens with my ESP12E ...
0
votes
2answers
69 views
SoftwareSerial doesn't seem to work with ESP8266
I am trying to issue AT commands to the ESP8266 wi-fi module from Arduino Uno programmatically, but to do that, I can't get SoftwareSerial to work.
I've tried multiple ways of identifying the root ...
0
votes
0answers
48 views
Can't send AT commands using Arduino Serial Monitor but can receive data
I've been sitting with this problem for a while now. I have a ESP8266 WiFi module and I connected it to my Arduino Uno powering it from the 3.3V supply. Initially I tested it with the serial monitor ...
0
votes
2answers
68 views
connecting ESP8266 to mega 2056
im trying to connect wifi module to my MEGA 2560 board.
i set up the board as the picture bellow
and my program is as follows
#include <SoftwareSerial.h>
#define DEBUG true
SoftwareSerial ...
0
votes
1answer
71 views
Arduino retrieving PHP echo using ESP8266
I want to retrieve the echo string. Here is my php code
<?php
echo "<hello word!>";
?>
I am using ESP8266 and Arduino Uno. I have managed to send the request but it's not returning ...
0
votes
0answers
28 views
Unable to connect esp8266 12 module with arduino uno
Here is what I am doing
Arduino(UNO)--------Esp8266
3.3 v -- vcc
TX -- RX
RX -- TX
3.3 v -- EN(ch_pd)
GND -- GND
there is no blinking of LED on Esp8266, sometimes the LED is on and ...
0
votes
1answer
70 views
Get data from Arduino to webpage using ESP 8266
I found out this html code to control Arduino via ESP8266.
My question is how to send data from Arduino to webpage??
I was suggested using ajax. But i'm not handle it.
Thanks for any help.
