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
1answer
16 views
Problems returning char array from function, value gets messed up
I use the Base64 library for Arduino (but I don't think the problem is related to the library) and have the following function definition:
char* decodeImage(char inputString[], unsigned int ...
0
votes
1answer
9 views
Posting to EEPROM via HTML - ESP8266 Arduino IDE
For those of you familiar with my somewhat steep EEPROM learning curve...thank you for continuing to share your knowledge. I see how it's supposed to work and it's falling into place.
I've run into ...
-1
votes
1answer
19 views
how to send http POST wth arduino uno wifi board
I got myself a problem, buying uno wifi board, with ESP8266 built-in ;)
Literally all of the tutorials and examples explain how to POST from http client when using separate wifi shield, and being a ...
0
votes
0answers
9 views
NodeMCU - Star Configuration Broadcasting
I'm trying to have a central NodeMCU device that broadcast data out to multiple NodeMCUs so basically a star configuration. I'm aiming to have each NodeMCU receive the data on their end and display ...
0
votes
1answer
20 views
WiFi thermometers: save different location string as const across many devices
I've built a very simple WiFi thermometer out of an Adafruit ESP8266 HUZZAH breakout board and a TMP36 temperature sensor. I have it reporting the temperature over wifi to my computer which will be ...
0
votes
0answers
31 views
Parsing GET function + ESP8266 + ARDUINO IDE
I am working on a ESP and making it a simple Http web server. I have successfully ON/OFF the led using the browser. I need to use PWM, instead of Switching the led. As of now When I hit http://192.168....
0
votes
1answer
20 views
MPU9250 - Calibration Not Saved with RTIMULib EEPROM Issues
I'm using the MPU9250 and the RTIMULib to perform sensor fusion, however, when I run ArduinoMagCal, and save the calibration, and follow that with running the main ArduinoIMU it claims the calibration ...
1
vote
2answers
33 views
Average response time of Esp8266 module
I'm planning a project where I'd like to control an RC car with Arduino and an Esp8266 module.
A software running on a computer would read the input from an USB analog controller and send the data ...
0
votes
0answers
26 views
ESP12F, Arduino IDE vs LUA vs Native SDK [duplicate]
Which one is the most efficient?
Is there any downside of using arduino ide instead of NodeMCU with lua script or Native SDK?
Pro's and Con's of each.
0
votes
0answers
45 views
Trouble with ESP8266 and DHT11
I'm using a setup described in this adafruit article for a humidity/temperature sensor-to-database module, and I'm consistently getting the same error messages:
trying to connect
flush start
setting ...
0
votes
1answer
29 views
Determine Object Heading
Is there a sensor I could use which would let me know which direction an object is heading/facing? i.e. I have a servo that can rotate 0 to 180 degrees, and I have another sensor on a block. When I ...
1
vote
1answer
24 views
Control many devices via Wifi
I have one Arduino and I want to control a Servo motor and other devices. The Servo motor is further away from the Arduino so I want to control it wirelessly. The problem is that I want the Servo to ...
0
votes
1answer
53 views
ESP8266 to ESP8266 communication using arduino ide
I am trying to achieve communication between esp to esp,i,e one acts as a serer and other acts as a client, where i am passing the string from server serial monitor to client. but client is not ...
0
votes
2answers
35 views
Basic Question - ESP8266 Board Pins
I have an embarrassingly simple question.
My experience to date has been limited to Arduino Uno + Wifi101. I bought an ESP8266 and noticed that the GPIO pins don't match the printed numbers on the ...
1
vote
2answers
40 views
ESP8266 - Error: unknown opcode or format name 'jmp'
I bought a nodeMCU 8266 and I'm hoping that it can replace my bulkier UNO+WiFi 101.
I'm getting an error when I compile:
Error: unknown opcode or format name 'jmp'
I'm using it in void SoftReset() ...
0
votes
1answer
75 views
Arduino Uno - ESP 8266: sending AT commands via Code
I bought a ESP 8266 & I am able to send AT commands and receive response via serial monitor when I upload a empty sketch. I changed the baud rate from 115200 to 9600 by using AT+CIOBAUD=9600 and ...
0
votes
2answers
95 views
Problem Flashing Esp8266,
I am trying to flash the AT firmware in esp8266 but i am always getting the error of timed out waiting for packet header.
Note : I am using esptool.py to flash the the chip and i already have some ...
1
vote
0answers
24 views
How to reset the nodeMCU module
I've flashed AT firmware onto my nodeMCU development board and when I reconnect it, the built in LED gets switched on and the module continuously sends some garbage data to the serial monitor. So how ...
0
votes
1answer
145 views
How to connect WIFI sheild ESP-12E-ESP8266-UART-WIFI-Wireless-Shield with arduino
Hi all I have bought this shield from ebay and now I don't know how to use it,
http://www.ebay.in/itm/ESP-12E-ESP8266-UART-WIFI-Wireless-Shield-for-Arduino-UNO-R3-Bouclier-Sans-filfr-/152048233906?
...
2
votes
4answers
126 views
Can ESP8266 replace Arduino?
I’m a hobbyist and have used Arduino so far for simple projects. Now I want to build a project involving addressable LEDs, I want to write several programs on the Arduino for the LEDs and on my phone ...
0
votes
2answers
69 views
How to compile an official VS1003 / VS1053 example for Arduino / ESP8266?
Have anyone ever successfully run any of the official playback and recording examples for VS1003 or VS1053 on Arduino / ESP8266? I mean, I was able to play sound with VS1003, but I just can't make the ...
1
vote
1answer
23 views
ESP2866 and java ServerSocket
So I have an application that runs on the Arduino that passes info over serial.
I'm using a ESP2866 to make it wireless.
Arduino->Serial->Esp2866->SocketConn->JavaSocket->Console
I ...
1
vote
1answer
55 views
ESP8266 not able to communicate over serial connection with arduino UNO
This is the code I uploaded in Arduino UNO:
#include<SoftwareSerial.h>
SoftwareSerial ESP(2,3); // RX, TX
//ESP RX-->3(UNO) TX-->2(UNO)
void setup() {
// Open serial communications and ...
0
votes
0answers
5 views
Espressif flash download tool
I'm trying to flash AT firmware onto my nodeMCU using the Espressif flash download tool.The COM port option on the download tool has only nine COM ports listed(COM1 to COM9) but my laptop always ...
-1
votes
1answer
46 views
How to determine Flash Size
I need to determine the flash size of my ESP8266 on my nodeMCU Module in order to flash the AT firmware onto the board. Apparently the different boards come with differently sized flash memories. Can ...
0
votes
1answer
68 views
MQTT and IR code Raw
I want to upload/pubish Raw IR Code to MQTT server recieved through my ESP8266. I have recieved the following RAW IR code from the Television using the IR reciever sensor:
RAW IR CODE = {4650,4250, ...
1
vote
1answer
45 views
How to filter a blank line received over serial - ESP8266
How can I filter a garbage completely blank line over my serial data? It comes from the wifi module ESP8266
How I read data:
while (Serial1.available()){
String inData = Serial1....
1
vote
0answers
45 views
AI thinker AT firmware [closed]
Can anyone please provide me a link to the Espressif IOT SDK user manual?
I need it to flash AT firmware onto my nodeMCU but all the files available on the Espressif website do not contain the list ...
0
votes
2answers
123 views
Weird characters in Serial Monitor and not functioning ESP8266 ESP-12e
I did a bit of playing with my new ESP-12e, but suddenly it kind of fails on me. It gives me some weird looks it didn't give me (as much) before.
This is what the Serial Monitor prints when I try ...
0
votes
0answers
28 views
Arduino unable to send data: TCP error
I am trying to send data colelcted from Sensors to our Server.
Protocol: TCP
Modes: Wifi (ESP8266) or GPRS (SIM 900A)
Help needed: I am able to get a IP address in both devices, it always fails with ...
-1
votes
1answer
48 views
ESP8266 Battery Monitor
Is there a way to monitor the battery that feeds an esp8266 in a portable project?
I have been meaning to implement that feature into my project so that i can be warned when the battery runs low on ...
0
votes
2answers
33 views
No Response to AT commands
I'm unable to communicate with my nodemcu ESP8266 module using the AT commands. The module does not return 'ready' on the serial monitor and entering AT commands has no effect at all. I am able to ...
0
votes
0answers
52 views
Arduino Wifi/Wemos Wifi D1 adding &t=0 to simple GET request
I'm attempting to make a simple get request to my website from my arduino, but I'm unable to do so.
I keep getting the following error:
<html>
<head>
<meta http-equiv="refresh" ...
0
votes
1answer
69 views
Sending binary data to HTTP server
I am new to low level programming.I am trying to send binary data to the http server.At the moment i just fill up the byte array with numbers and send them to the server(eventually i want to send ...
0
votes
0answers
62 views
Programming an Arduino over the air using an ESP8266
This question stems from this article (Originally in Spanish/English) which Hack a Day summarizes (Includes link to partial english translation). These articles show that it is possible to update an ...
0
votes
0answers
65 views
ESP8266 i2s dac
I'm building a wireless home audio system comprised of esp8266s connected to speakers, and a raspberry pi base station to broadcast the music. I'm trying to keep the project as cheap as possible, with ...
0
votes
1answer
79 views
How to serve multiple connections with an ESP8266 and an Adruino?
I want to make a server using an ESP8266 (12e) and an Arduino Nano.
I have got everything hooked and I created a minimal "Hello World" example, based on a number of samples found on the web, which is ...
0
votes
1answer
35 views
Opening webpage using ESP8266 in Arduino
I am trying to open the webpage in ESP8266 via Arduino Mega.
I have successfully opened the webpage if I use the AT command in the Serial Monitor
The output is perfect
+IPD,382:HTTP/1.1 200 OK
...
0
votes
0answers
57 views
ESP8266-01 Standalone programming via Arduino uno clone?
For the past 2 days i have been trying to upload sketches to my esp module by using as a middleman this arduino uno clone .My goal is to program the esp to work alone as a microcontroller using the ...
0
votes
1answer
47 views
Manual TCP connection using WiFi ESP8266 module mistyped command
The command is working fine if I type it directly to the serial interface
AT+CIPSTART="TCP","192.168.1.5",1647
But if I want to make it automatic and send it whenever I want from inside the code is ...
0
votes
3answers
100 views
How to change baudrate of ESP8622 (12e) permanently?
IMPORTANT : DO NOT USE AT+IPR=9600 !! (see update)
I have a ESP8266 12e module that communicates at 115200 baudrate.
Since I use it with an Arduino nano with SoftwareSerial things get messy.
So I ...
0
votes
2answers
52 views
How did I burn out this ESP8266 unit?
ESP8266 -> FTDI -> USB Mac
I followed the wiring on this page: http://williamdurand.fr/2015/03/17/playing-with-a-esp8266-wifi-module/
I was communicating with it via Serial at 115200. I issued a ...
0
votes
1answer
67 views
ESP8266 - CIPSEND & external power supply Hangs program
Updated:
I connected my esp to external power, the blue light stays on, I start getting garbage data.
I used voltage regulator which was giving 3.4v, power supply tested with 1A & 2A.
Old ...
0
votes
0answers
46 views
Esp8266 Serial Connection using Arduino showing garbage
I am new to Arduino pro mini (5 V running it at 3.3 V) and esp8266.
I am trying to use AT commands using sketch program.
Here is reported the code I tried:
#include <SoftwareSerial.h>
...
0
votes
1answer
90 views
ESP8266 reset problem
I am trying some AT commands with ESP8266 but it resets continously when it stop resetting, i can't get any response from ESP8266.
Example :
AT
OK
AT+CWMODE=1
OK
AT+CIPMODE=0
OK
AT+CIPMUX=1
...
0
votes
2answers
57 views
Arduino nano to esp8266 level shifting needed?
I want to connect an Esp8266 Wifi module to an Arduino nano. I am wondering if I need to implement level-shifting for the Arduino TX line to Esp RX line?
I find different schema's on the net. Some ...
-1
votes
1answer
31 views
ESP8266 does not response
My wire schema ;
http://bloglug.com/wp-content/uploads/2015/08/Arduino-esp8266-baglantilari.png
And i'm using arduino, it has blank loop. I'm trying AT command by using Serial Monitor and I have no ...
0
votes
0answers
50 views
How to establish MQTT communication with arduino using ESP8266 over softwareSerial?
I want to establish MQTT communication with MQTT server and Arduino. I tried so many Arduino libraries for ESP8266 but none of them are compatible with PubSubClient over software serial.I am using ...
4
votes
2answers
110 views
Do I need 3 voltage dividers to control ESP8266
I am buying an ESP8266 and the plan is to control it serially from an Arduino. I am going to use a voltage divider(Using a voltage divider is temporary and I know the cons of using voltage dividers).
...
0
votes
0answers
46 views
Error loading Blink sketch in esp01 (esp8266)
I have the esp01 connected the serial port using a usb to ttl serial cable and also using the Arduino UNO as suggested in some tutorials. I can execute AT commands. But loading a sketch from Arduino ...
