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.
1
vote
2answers
31 views
How can I maintain switch state when in sleep mode?
I'm using a esp8266 to build a remote control to power a gas fireplace. I'm using this guide to try and maximize battery life.
The concept is the controller uses its built in WiFi to access a ...
0
votes
2answers
19 views
Arduino not running code without connection to PC via USB
I have an Arduino UNO and esp8266 connected to it. Both devices has separate power lines. Each connected via USB cable, for Arduino USB used as power line and standard firmware uppload line, for ...
0
votes
1answer
26 views
How to send data to PHP web server from arduino uno using ESP8266-01 Wifi Module?
I want to send some data from my Arduino Uno to a web server where I could organize and display the data to a web page when needed. I have an ESP8266 Wifi breakout.
But I don't know how to setup ...
1
vote
2answers
23 views
Communication between Raspberry PI (Windows IOT) and Arduino with ESP8266
I'm currently working on a Home Automation project where I have a Raspberry Pi on Windows IoT which communicates with multiple arduinos running on FreeRTOS (I need multi-tasking).
At the moment the ...
0
votes
2answers
26 views
Extracting bits from hex encoded binary
I've been using an Adafruit Huzzah ESP8266 Breakout to read data from an OpenTherm Gateway connected to my central heating unit, and publish that to MQTT. I'm programming the ESP8266 using the Arduino ...
0
votes
1answer
34 views
Arduino to ESP8266 SoftwareSerial communication
I have an Arduino Uno and an ESP8266, connected over serial through
ESP8266 pin GPIO_2 (which is set as RX over espsoftwareserial) and 11 on Uno (which is set as TX over SoftwareSerial). I am trying ...
0
votes
1answer
41 views
ESP8266 Aes encryption using Arduino IDE
I'm trying to implement an AES encryption function on my ESP8266 controller, using Arduino ide and this aes library.
I finally made it work after many attempts but the output i get from the encryption ...
0
votes
1answer
45 views
Arduino-ESP8266 socket
I am programming an ESP8266 module via Arduino IDE. I basically have to use it as a server that can light up a led when a client sends a request.
This is okay but I have to implement it with a NONCE ...
0
votes
1answer
31 views
Can i power Esp8266-Nodemcu with a solarpanel + usb-powerbank?
I was asking myself wether it's possible to power my nodemcu board (version 3) with a usb powerbank, like a smartphone, but the powerbank should then be recharged by a solar panel. So this is ...
0
votes
1answer
32 views
Arduino + ESP8266 as Webserver
I want to connect Arduino to my Home Wifi and make it serve as a server to access GPIO pins on Arduino from remote (like controlling LED connected to Arduino from remote).
I am using ESP8266 to ...
1
vote
0answers
39 views
ESP8266-12E Startup Problem [migrated]
The ESP8266-12e does not start upon the first attempt, I have to reset the module (or power on/off) multiple times and then it starts after number of attempts. The voltage reading in the multi-meter ...
0
votes
0answers
26 views
Arduino + ESP8266 POST max 49 characters
I have a problem with Arduino connected to ESP8266, when sending data to a web server via POST.
When I POST 44 characters of data like "sensor_1_total_volume=150&sensor_2_total_vol", then it's ...
0
votes
1answer
26 views
How do I see the command line equivalent of clicking Verify?
I am using the ESP8266 board manager. I want to see how Arduino IDE compiles my code once I click Verify.
Why do I want to do this?
I am trying to integrate a C library for which there is now ...
1
vote
1answer
28 views
De-Auth “attacks” using Arduino?
So I'm trying to use my Arduino and an ESP8266 to spam De-Auth "attacks". I am quoting attacks because I do not plan on using this for malicious or destructive purposes. Ive heard that the ESP8266 ...
1
vote
1answer
36 views
ESP8266 Nodemcu create custom PWM with 1.25us resolution
I am trying to control some SMD LEDs WS2812B with the ESP8266-Nodemcu. I am using Arduino environment for coding. Actually I am trying to accomplish a PWM that is precisely able to:
Go High for ...
0
votes
0answers
50 views
Cheapest and reliable combination of a microcontroller board and a motor controller [closed]
I started with the cheapest option: ESP8266 Wemos D1 Mini + motor shield. $9 for both. However, it seems to be extremely unreliable.
The examples files of the motor are working. However, trying to ...
0
votes
0answers
38 views
Arducam OV2640 undefined reference to Sha1
I am trying to connect the Arducam OV2640 with the ESP8266-12E module.
This is the main file used with the Arduino IDE 1.6
However, compiling generates the following error:
libraries\...
0
votes
1answer
48 views
File download from SD card hangs up my ESP-12E
I'm using ESP8266 Arduino for compiling and uploading my code to NodeMCU 1.0 (ESP-12E Module).
Flash Size: 4M (3M SPIFFS)
CPU frequency: 80 MHz
Upload Speed: 115200
I'm using portable arduino-1.6.9-...
0
votes
1answer
23 views
Getting a reset error on an Arduino Wemos D1
As a learning effort, I am trying some sample code on my Arduino Wemos D1 which is basically an Arduino compatible board with a built-in ESP8266 (Wi-Fi module).
This is the output of my Serial ...
3
votes
3answers
62 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 ...
-1
votes
2answers
40 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, ...
-1
votes
3answers
35 views
Scan multiple ESP8266 [closed]
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
32 views
create dynamic mqtt topic [closed]
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
27 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
21 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
1answer
42 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
35 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
44 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 ...
-1
votes
1answer
59 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
37 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
24 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
83 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
75 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
95 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
50 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
153 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
28 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
39 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( ...
0
votes
2answers
95 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
94 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
34 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
56 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
114 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
1answer
57 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
98 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
113 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
213 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
2answers
63 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
44 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
118 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 ...
