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
1answer
27 views
SD card shield not working on 3.3v
My SD shield works nicely on 5v supply, but does not detect SD card on 3.3v. Could someone explain the possible reason behind this? Could you also provide a solution for this?
I've worked with it on ...
0
votes
2answers
26 views
ESP8266 GET REPLY ERROR 501
I am trying to build a home automation system and i am unable to get data from a website using the arduino sketch, however i am able to get data from the website when i enter the AT commands into the ...
-1
votes
1answer
16 views
Errors in code, LM35 temperature logging to web server
trying to experiment with Wemos D1 and LM35. Need to have temperature reading on the ESP IP. Found the following project to be exactly matching my requirements but I am having certain errors in it. ...
-1
votes
1answer
32 views
Using MPU9250 with ESP8266 without Arduino
I have an AI-Thinker ESP8266MOD on Lolin v3 board and a 9-axis sensor, MPU9250. I have seen many examples of using the MPU9250 with Arduino boards, but none with ESP8266.
How should I access the MPU ...
1
vote
2answers
22 views
WiFiClient.connect() does fail all the time (ESP8266 Core for Arduino)
I have one ESP(1) opening an AP and running a server on it. The other ESP(2) is running a client on it and is connecting to the AP and after that trying to connect to the host server. The connection ...
-1
votes
1answer
14 views
ESP01 PROBLEM: ip not showing up
Here is my progress on the ESP-01 ESP8266 module. I can't seem to go further, because the system doesn't have an IP and I tried all methods but still failed.
ððAT
OK
AT+CWMODE=1
OK
AT+CWMODE?
+...
0
votes
1answer
32 views
ESP8266 - How to know if incoming connection is from AP or station network?
I have an ESP8266 module connected with my Arduino configured as a server, with both AP and station modes (AT+CWMODE=3) activated, and I want to know if an incoming connection comes from the AP's ...
0
votes
1answer
34 views
Communicate with ESP8266 RX/TX
I just managed to get a unofficial Arduino WiFi shield to work. But the ESP is flashed on its own now - providing only information to the USB->TTL converter and therefore the output goes straight to ...
0
votes
1answer
22 views
using an ESP8266 shield on my Arduino Uno R3 with an unofficial library
I'm using the following Makefile: https://github.com/sudar/Arduino-Makefile
It works very well and I was able to get my LED to blink.
Now I bought a WiFi Shield which is NOT supported officially by ...
0
votes
1answer
46 views
Converting uint8_t to String - unexpected result
I'm working on a remote control code for ESP controller. Using ESPwebserver and Fastled. When I try to return a value of an uint8_t, as a POST response, i got strange result here is the relevant code:
...
2
votes
2answers
47 views
What are the logical errors in this piece of code?
The client always reply with "ThisCodeTurnsTheUnoOnn" or ThisCodeTurnsTheUnoOff" based on some conditions.
This piece of code is inside arduino uno's void loop().
Expected behavior:
The arduino ...
0
votes
0answers
71 views
Exception 29 ESP12E Arduino
I am getting exception 29 every time I make request to HTTP using GET function. I am requesting HTTP every 20-30ms but using Millis I am only reading request at 100ms in order to avoid any overflow or ...
0
votes
2answers
45 views
Cannot ping ESP8266's IP address from a computer on the same network
I have an ESP8266 module connected to my Arduino Mega 2560. I sketched a simple code to pass whatever command I typed from the Serial Monitor to ESP8266 and vice versa:
void setup() {
Serial.begin(...
-1
votes
0answers
12 views
Toggle Arduino LED problem Through An Android App via ESP8266 wifi module Please help!! some times it toggle some times it doesnt
#include <SoftwareSerial.h>
#define DEBUG true
SoftwareSerial esp8266(2,3); // make RX Arduino line is pin 2, make TX Arduino line is pin 3.
// This means that you ...
1
vote
2answers
48 views
analogRead DC Motor - Negative value
I was trying to play with Arduino this weekend and connected a DC motor to A0 and GND to measure the voltage it provides when I rotate it.
However,
when I rotate the DC motor with my fingers to test ...
2
votes
1answer
38 views
Powering ESP8266 from Leonardo's 3.3v pin
I'm new to Arduino, and I'm trying to connect my Leonardo via WiFi using a ESP8266 module. What I want to know is if I can power it directly from the onboard 3.3V pin like in the image:
Or do I ...
0
votes
0answers
28 views
ESP8266 shorting rx pin to vcc
I cannot program my ESP8266 (espcomm_sync failed), I am using Arduino Uno to program it by using it as a USB to ttl converter (shorting reset to gnd)
I tried almost everything on the internet:
...
0
votes
0answers
48 views
Connecting to WiFI through WPS (ESP8266 Sparkfun Shield)
I'm trying to connect my arduino to my wifi network using WPS
push button but I'm not sure how to set it up. There are no examples of this in the library and some googling didn't reveal anything ...
0
votes
0answers
45 views
Wifi networking with ESP8266 (NODEMCU version)
I am doing some experiments with nodemcu 12 (which has built in esp8266). There most of the tutorials I found by internet describe how to connect to home wifi connection using it.
But when I power ...
2
votes
2answers
97 views
Should I buy a retired Arduino?
I am a beginner who would like to buy an Arduino Yún (58 dollars).
It is retired so will I have any problem?
Else I can buy an Arduino Uno and an Arduino Yún Shield. But in this case I don't ...
0
votes
1answer
37 views
Best way to assign value to lot of variables
I'm building web based remote control system for esp8266. In arduino IDE, using the ESP libraries. To, send data to the server, I'm using http post.
For some settings, I need to transfer 30 or so, ...
2
votes
1answer
38 views
Is it possible to program an ESP8266 12F using an Arduino Nano?
I just got my ESP8266, but I am unable to program it. Since it can't be connected to via USB, I was wondering if I can program it using an Arduino or perhaps use it as a shield for an Arduino Nano. I ...
-1
votes
1answer
25 views
Wiring ESP-05 to Uno
I'm a beginner with Arduino,
so I'm asking how to connect ESP-05 module to Arduino Uno, before I buy it.
Thank you.
0
votes
1answer
27 views
How does Arduino decide when to go into flashing mode and normal mode?
Just this general question.As the titles says.
How does Arduino decide when to go into flashing mode and normal mode?
Is it by connecting certain pins to ground,so it's a hardware check or does it ...
0
votes
1answer
42 views
Posting data with ESP8266 module? [duplicate]
I have an ESP8266 module attached to an Arduino Uno that is connected to my local network. On the network, at address 192.168.1.13, I have a nodejs/express server running on port 3000. How would I go ...
0
votes
0answers
39 views
Posting data with an ESP8266 module?
I have an ESP8266 module attached to an Arduino Uno that is connected to my local network. On the network, at address 192.168.1.13, I have a nodejs/express server running on port 3000. How would I go ...
0
votes
0answers
18 views
'xtensa-lx106-elf-gcc' error when trying to compile for ESP8266 board
I am getting:
xtensa-lx106-elf-gcc: error: libraries\LiquidMenu\LiquidMenu.a: No such file or directory
exit status 1
Error compiling for board Generic ESP8266 Module.
error when I try to compile ...
0
votes
1answer
35 views
ESP8266 Showing junk data while running local WiFi connect
I have connected my ESP8266 through FTDI USB cable and when I try to run the sketch for connecting local WIFI network it displays:
ESP8266 is getting external power.
RX - TX or connected to ...
0
votes
1answer
10 views
User-Agent question
I've seen a few different User-Agents used in demo sketches and am curious as to what the various User-Agent options are and how to determine which one to use.
For example...
User-Agent: Mozilla/...
0
votes
1answer
32 views
EPS8266 ESP-01 Blue led stays lit unless 3.3v logic divider is bypassed, works when reconnected
I am having a very weird and frustrating issue with this ESP01. I am creating a shield on protoboard, and everything checks out as far as I can tell. I am using a 3.3v voltage divider (1k and 2.2k) ...
1
vote
1answer
44 views
NodeMCU : Input pullup in A0 [closed]
I am trying to port a simple project I have working in an Arduino UNO to a NodeMCU but I am stuck as I am using the analog gpio to receive the input from some buttons, I am always getting always low ...
0
votes
0answers
35 views
how to Clear up UART FIFO to reduce printing time
A FIFO (First In First Out) is a UART buffer that forces each Byte of your serial communication to be passed on in the order received. To reduce time consumption, too much information printing should ...
0
votes
0answers
63 views
Esp8266 firmware update with uno “chip sync error”
I have an ESP8266-01. I followed the instructions on this
http://yaab-arduino.blogspot.com/2015/12/flashing-esp8266-firmware-arduino.html?m=1
exactly. When I start the firmware update the TX and RX ...
0
votes
1answer
28 views
pH ORP sensor esp12 esp82666
I need to know if there is a sensor that mesure pH and ORP, I have already googled about this type of sensor but i found only AtlasScientific that commercialise this kind of sensor
thanks
0
votes
1answer
83 views
ESP 8266 does not respond for any
I have ESP 8266 Wifi module and Arduino mega Board connected. I use external 5 to 3.3v regulator to power up the module.and mu common (-ve) line on the external power source and Arduino mega GND is ...
1
vote
1answer
93 views
Parse HTTP Request Arduino
I am sending a HTTP Request to my WiFi module http://192.168.4.1/STA/ID=HelloWorld/Pass=Testin123
How can I parse above string in Arduino. First I need to check for STA, if it exists, continue to ...
1
vote
0answers
41 views
ESP8266 stuck in flash mode?
I have the setup described here: https://learn.adafruit.com/esp8266-temperature-slash-humidity-webserver/wiring
I currently have the reset pin set to float and the GPIO0 pin grounded, which should ...
0
votes
0answers
52 views
Serial commands to web browser
I am using this Wifi Shield for arduino.
Using this, there is a possibilty to connect the arduino to a local router in STA mode, and make it as a TCP web server with it's own IP address and PORT ...
0
votes
0answers
98 views
esp8266 (esp-01) - GPIO while deepSleep
I am currently trying to build a small notifier for my mailbox with an esp8266. The basic idea is to switch on a LED, check if mail is in the mailbox (using a photo sensor), then fire up WiFi, post a ...
-1
votes
2answers
68 views
Sending a text/notification with Arduino + ESP8266 Wifi shield [closed]
Is it possible to send a text message using an Arduino and the Sparkfun ESP8266 Wifi Shield using Temboo? I noticed that the ESP8266 might not be supported by Temboo and I was wondering if there is a ...
0
votes
1answer
33 views
Size of String array
I am trying to find out the size of an array like this:
String days[3] = { "Mon", "Tue", "Wed" };
Serial.printf("Size of array: %2d\n", sizeof(days));
for (int i = 0; i < sizeof(days); i++) {
...
1
vote
1answer
23 views
Server checkbox not working properly
I am trying to make an arduino alarm clock to which you can send alarm clock times over the web.
This is the HTML code
<input type="checkbox" name="alarm1" id="alarm1">1</button>
It's ...
0
votes
0answers
110 views
How to do “Http File Upload to webserver” using ESP8266 under Arduino
I need help from you experts regarding uploading file to webserver from ESP8266 under Arduino IDE. I tried searching all over the net but no lead found. Appreciate any help in pointing me in right ...
0
votes
2answers
96 views
OTA Update Esp8266 without IDE
I was wondering if its possible to program the esp8266 to receive firmware updates without the use of an IDE to program.
Use Case:
This device should be setup to the WiFi network scan an IP for a ...
0
votes
2answers
163 views
How to connect ESP8266 12e directly to Arduino Uno (without shields)
I have an ESP8266 12E module and I'm trying to connect it to arduino, without any shields or whatsoever. I've looked everywhere but all I can find is about ESP-01 or with a NodeMCU. I'd like to do the ...
0
votes
0answers
64 views
ESP01 (esp8266) controlling relay problem
I am trying to control relay (SRD-03VDC-SL-C) with ESP-01 module. For this I am using relay and not whole board with relay. ESP's GPIO2 (tried also with GPIO0) output is connected through 1kOhm ...
0
votes
1answer
105 views
ESP8266 - AT Command for Network Requiring Username AND Password
I have been using my ESP8266 module with my Arduino on my university's Wi-Fi network, which only requires a password to log on to.
The university will soon terminate that Wi-Fi network and replace it ...
1
vote
1answer
196 views
WDT & Software RESET in ESP8266 + Arduino IDE
I am working on ESP8266 in Arduino IDE. I want to know how to Software RESET the ESP8266. Any sketch/example would be useful. Moreover, how to initialise WDT in ESP8266.
Kindly help!
0
votes
0answers
45 views
HMC5883L - angle 0 to 90 only - NODEMCU ESP12E
Got this cheap chip and connected to SDL SCA on NodeMCU ESP12E
Using the example sketch:
HMC5883L_Example.pde - Example sketch for integration with an HMC5883L
triple axis magnetomerwe.
The ...
0
votes
1answer
56 views
Problems with Powering Led Project Through Vin Pin
I am working on lighting some WS2812 Leds with a nodemcu form hiLetgo. The project works when it is powered from the usb that is on the board, but as soon as it is powered from the barrel jack, the ...
