Questions tagged [esp8266]

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.

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i am getting an error while working with esp8266

i got an error avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00 avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00 avrdude: stk500_getsync() attempt 3 of 10: not in ...
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Arduino IDE / Specified folder/zip file does not contain a valid library

I trying to add library here but it doesn't seem to work https://github.com/esp8266/Arduino This happens "Specified folder/zip file does not contain a valid library" This problem make me no longer ...
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1answer
524 views

DIP switches on RobotDyn Uno+WiFi

There are theses 8 small pins on the Uno+WiFi board. Can someone please give me a detailed table or something on the settings of these 8 DIP switches? I'm sorry if this question has already been ...
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1answer
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Arduino sketch for NodeMCU v1.0 (ESP8266-12E) has no error of compiling but does not run on NodeMCU v1.0 (ESP8266-12E) Board

i compiled a Arduino Sketch for NodeMCU v1.0 (ESP8266-12E) which have no error while i test with verifiy button in Arduino IDE 1.8.6 but i don't know what is the problem when i upload and test it . it ...
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ESP send data to Arduino

I'm trying to send data from my esp to my arduino using serial using the following codes : esp : server.on("/drive",HTTP_GET, handleDrive); void handleDrive() { server.send(200,"text/html", "...
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1answer
4k views

Connecting multiple clients to a server in Wifi

What is the best method or retrieving information such as temperature from multiple wifi clients with a ESP8266-01 ? I have one server and five client running with ESP8266. I have seen post ang Get ...
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2answers
4k views

Serial Monitor not properly interpreting data from my NodeMCU V3

I've just received several LoLin NodeMCUs from a 'cheap Chinese ebay vendor'. They're working well except for the fact that I'm getting garbage in the Arduino IDE Serial monitor. I am able to: Load ...
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1answer
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WS2811 LEDs have the wrong color unless I touch the data wire

This is an electrical/hardware issue, but for background, here's my setup: I'm using a Wemos D1 mini in conjunction with Home Assistant running on a RPi3. The MQTT setup works fine and the commands ...
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1answer
2k views

Download and print data from Thingspeak

I opted to try doing this with Thingspeak Library instead, which @gre_gor suggested early on. Worked much easier! Here's working code for anyone else trying to do this. I used the MKR1000. #...
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How to read data from client ESP8266-01?

I need help: my Arduino is not receiving or reading from an ESP8266-01 as a client. Actually, the ESP01-server and ESP01-client are successfully talking each other but if I attach the Arduino Uno to ...
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1answer
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How To Communicate Three NodeMcu In Access Point Mode

I'm working on project which for example 3 nodemcu connected with eachother in a line(1 connected to 2 and 2 connected to 3) and they are all in access-point mode (they are all server) and now my ...
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1answer
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error: espcomm_upload_mem failed ESP8266

So, I downloaded tools for my ESP8266 using this link: http://arduino.esp8266.com/stable/package_esp8266com_index.json I installed the last version in my motherboard manager (2.3.0) and tried to ...
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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.
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1answer
64 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 ...
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1answer
224 views

Connecting to WIFI using esp8266

This is my code. I am tring to make a connection to my wifi through esp8266. #define DST_IP "192.168.1.5" // my IP #include <SoftwareSerial.h> SoftwareSerial mySerial(0, 1); void setup() { ...
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2answers
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ESP8266 is not responding

I have ESP8266, FTD232 UART, Linux mint 17.3 OS, Arduino IDE 1.6.7, Following are the connections: External Power source ESP8266 3.3 V VCC GND GND 3.3 V ...
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1answer
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Battery Solution for ESP8266 and HC-SR04

I'm working on a project that includes an ESP8266 (requires 3.3v input (250 mA peak)) and a HC-SR04 (requires 5v 20 mA peak). I'm making it battery/solar powered. I'm trying to keep costs down as ...
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2answers
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Error in sending AT commands in esp8266 connecting to arduino IDE

I am working on esp8266 with Arduino. I have connected pins like arduino-esp 3.3-vcc gnd-gnd 3.3-CH_PD RX-TX TX-RX and reset to gnd using 3k resistor. I couldn't send AT commands in serial ...
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1answer
1k views

Choosing Right Power Supply for Arduino - ESP8266 - HC-SR04

If I make connections like you see in picture below, will it work? Will I damage ESP or HC-SR04? As I know; HC-SR04 (VCC) -> 5V ESP8266 (VCC) -> 3.6V ESP8266 (RX/TX) -> has 5V tolerance ? I ...
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2answers
2k views

Arduino + ESP8266 - poll file from a server?

I really need all the help I can get... It's been a week now and I'm still not able to solve the problem. I have text file on a server. The whole address is www.example.com/test.txt I want to read ...
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1answer
88 views

OLED shield for wemos d1 mini pro not staying on

I recently bought a wemos d1 mini pro to toy with wifi and bought a oled shield with it. I've been looking on youtube and github for software and I finally found the software and got it to load onto ...
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2answers
123 views

ESP8266 not accessing PHP file

I'm trying to control NodeMCU via Android application and I can control NodeMCU easily but when I added the URL to hit the PHP code to enter data in MYSQL, neither NodeMCU is controllable nor NodeMCU ...
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1answer
50 views

ESP8266 -01 doesn't reply with anything

The problem started when I tried to upload the Blink program to the module, it uploaded with no issues through Arduino but after that the blue LED didn't blink. I searched a lot for it and found that ...
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1answer
400 views

Using Thinger.io Wifi together with HX711 library soft resets ESP8266 (NodeMCU)

I'm trying to get my NodeMCU v1.0 board to read from a load cell connected to a HX711 amplifier and send the data through Wifi to Thinger.io. I managed to make the readings from HX711, works perfectly....
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1answer
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Serial read in ESP8266-01 not working

I am new to programming. kindly bear with me. I am trying to use ESP8266-01 device for serial read and write application. Before writing the full program for my application, i wanted to test how it ...
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1answer
4k views

Connect ESP8266 to Thingspeak

I have an Arduino UNO and an ESP8266 module. I would like to connect my ESP to my wifi network and upload data to Thingspeak. How can I do it? What I find on the web is a bit misleading and non-...
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1answer
382 views

Ultrasonic sensor not getting reading while connecting to ESP8266

it's been week that i am having issue,that i can’t get ultrasonic readings when i connect with my esp8266 wifi module ,everytime it gives 0 cm reading.My both hardwares work perfectly if i connect ...
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1answer
274 views

Change Token authentication method to MQTT authentication method(username, password, client_id, ssid, passwd)

I have a mq135 sensor abd nodemcu ESP-12E module to calculate air quality and monitor it via Cayenne platform. How can I edit this below code to add and connect my Nodemcu ESP-12E module to cayenne ...
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2answers
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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? +...