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.
474
questions with no upvoted or accepted answers
3
votes
0
answers
1k
views
Using or creating Wi-Fi Direct (P2P) connection on ESP8266
I want to make a Wi-Fi Direct connection with an android device using my ESP8266. According to ESP8266WiFi Documentation and ESP8266 datasheet, the board has a SoftAP mode which is I think what is ...
3
votes
0
answers
1k
views
Getting a Wemos D1 Mini to work with a M1 Mac
The Wemos D1 mini won't show up on the new M1 Mac. I know it's related to the drivers but I just can't find a viable solution to the problem. Has anyone solved this?
- 31
3
votes
0
answers
4k
views
How to listen to multiple server ports with ESP8266?
I'm using WeMos D1 R2. I'm trying to listen to both ports 1992 and 1993. This is my current code:
#include
WiFiServer server_1992(1992);
WiFiServer server_1993(1993);
void setup() {
Serial....
- 33
3
votes
0
answers
8k
views
How do I interpret the esp8266 "boot mode" message?
Everytime the chips resets, we get the reason and the next boot mode.
ets Jan 8 2013,rst cause:XXX, boot mode:(YYY,ZZZ)
For XXX we can check the meaning here.
For YYY and ZZZ I am not sure but I ...
- 215
3
votes
0
answers
3k
views
Converting between NEC and HEX values from IR receiver
I jacked one of the IR receivers from my LED strip and hooked it up to my ESP8266 NodeMCU (running Arduino code). I found a great library called IRremoteESP8266. With this library, I can basically ...
- 353
3
votes
0
answers
622
views
ESP8266 and Arduino bidirectional streaming from and to a website
I was looking for some easy tutorial on bidirectional communication via ESP8266 connected to Arduino UNO. I want to send and receive strings from and to JQuery based website.
However, I couldn't find ...
- 109
2
votes
0
answers
22
views
ESP & Servo not communicating well
I have a mystery I was unable to solve and would greatly appreciate it if anyone could shed some light on this.
I have a servo DSS-M15S 270 which I managed to run perfectly fine with Arduino Uno (code ...
- 19
2
votes
0
answers
209
views
Using both FastLED and Webserver without glitches possible?
I'm using an ESP8266 to control a short strip of WS2812 LEDs. I also want some way of remote Control so I'm looking into using a Web UI with the ESPAsyncWebServer library.
However using that Webserver ...
- 47
2
votes
0
answers
211
views
Uploading image to Google Drive with Arduino/ESP8266
I have a toucscreen tft connected to an ESP8266 the aim for which is to take a screeenshot (.bmp format) and upload to Google Drive. I have been following this tutorial.
Where I am stuck in how to ...
- 31
2
votes
0
answers
1k
views
MAX30102 not working?
I have a project to find the pulse oximetry rate. I used MAX30102 and ESP8266 as shown in the first picture.
Wiring
GND ------> GND
VIN ------> 3.3V
SDA ------> D2
SCL ------> D1
Code
I ...
- 21
2
votes
0
answers
141
views
ESP8266 01 doesn't react after baud rate change
Hello guys I have my ESP8266 connected to my Arduino. Then I typed in AT in the serial monitor. It confirmed this command with OK. After that I typed in AT+UART=9600, 8, 1, 0, 0 which gave me the ...
- 31
2
votes
0
answers
51
views
Arduino compatible ESP32 and ESP8266 board power consumption at sleep state
I have data on smaller modules with ESP32 and ESP8266, but can't find anything reliable pertaining to the whole board power consumption (current) with 12V input and microcontroller at low power or ...
- 179
2
votes
0
answers
92
views
Connecting Arduino Uno's TX pin directly to Esp8266 esp-01
I am new to esp8266 esp-01 and trying to figure out how to use it, in many tutorials on internet, I have seen people have connected Arduino uno's TX pin directly to esp8266 esp-01 without any voltage ...
2
votes
0
answers
123
views
ESP8266 + 4x TM1637 == possible?
I'm having trouble getting my NodeMCU connected to 4 x 4 Digit 7 Segment Displays.
So far I've been able to connect 2 & get them to display things from the demo repository.
However, after trying ...
- 121
2
votes
0
answers
335
views
How to adjust Partition Scheme Wemos D1 mini pro?
I bought myself a WEMOS D1 mini PRO (16MB) for creating a quite large project.
As I'm writing code, my memory is starting to grow.
When I looked at the Flash size in Arduino IDE, the only options I ...
2
votes
0
answers
210
views
Where to define web server callback functions so they can access server object? (ESP8266WebServer library)
I want my ESP8266-based device to create an accesspoint that allows the user to input their home ssid and password. There is a device object that holds most of the data defined elsewhere.
I'm trying ...
- 21
2
votes
0
answers
126
views
Not Able to communicate with ESP8266
I just bought an Esp8266(not the node MCU) and tried connecting it with Arduino without a USB to serial converter but in vain. I am a beginner and don't know what to do. It is not responding to AT ...
- 43
2
votes
0
answers
786
views
GET/POST request via AT Commands
I am trying to send a simple GET/POST request to a dummy end point on https://requestbin.com/. I am using an ESP8266 module. I am using the arduino serial monitor to send these AT commands. I connect ...
2
votes
0
answers
213
views
Communication between two slaves via single SPI bus
I am trying to control both RC522 and lcd st7920 (128x64) via a single SPI bus on the NodeMCU esp8266. I am using Arduino core for my esp8266. Now in this portion of the code, I only want to display ...
- 21
2
votes
0
answers
125
views
Wemos D1 / Witty Cloud D8 doesn't behave as expected
When using D8 in the code doesn't work, nothing happens, but replacing D8 with 15 works like a charm. And to test this I created the code below. I know that D8 has worked earlier, but I don't remember ...
- 165
2
votes
0
answers
478
views
OLED display on I2C causes esp8266 to reset
I have connected two temp sensors and an OLED display to a NodeMCU using I2C. When the program reaches the instruction to print the measurements on the display the program crashes and NodeMCU resets ...
- 183
2
votes
0
answers
1k
views
ESP8266 Connection with WPA2-PEAP Enterprise Network
I am trying to connect my nodemcu 12E module to WPA2-entrprise network but not able to connect.
I had gone through the Espressif Forum and GitHub but still not able to resolve my problem.
here is ...
- 546
2
votes
0
answers
834
views
NodeMCU ESP8266 Returns IP address, but cant open the web with IP address
I have used the below code with proper Wifi Address and password. The Nodemcu connects to WIfi, and displays IP address, But the IP address cannot be used to open a web page. It says "This site cant ...
2
votes
0
answers
336
views
Delayed response from web server
I am trying to implement a web server in ESP8266 that will handle simple HTTP GET requests by initiating an operation (e.g. move a stepper motor to the requested position) and return a response when ...
- 121
2
votes
0
answers
407
views
ESP8266 and Arduino, using i2s and the built in adc?
I've done some extensive googling but haven't found any kind of proper documentation. Is it possible to use i2s with the built-in ADC on an esp8266 to sample audio?
And if so: any sample code on how ...
- 79
2
votes
0
answers
102
views
Turning on controller with button and turning off with a timeout
I am making a device controlled by an ESP 8266 and am wanting to save power by having it power down when not in use. The desired behavior is for a momentary button press or vibration sensor activation ...
- 31
2
votes
0
answers
679
views
error compiling for board node MCU 1.0
Arduino: 1.8.9 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Serial, 115200, 4M (3M SPIFFS)"
In file included from C:\Users\Priyaranjan Tiwari\Documents\Arduino\007mcu_php\007mcu_php....
2
votes
0
answers
37
views
If an Arduino goes to sleep, does the attached ESP also sleep?
I am using Arduino Uno + an attached ESP-01 (ESP8266).
I want to save battery, so I made my Arduino get sleep & interrupt by a watchdog timer.
But if the Arduino goes to sleep, does the attached ...
- 53
2
votes
0
answers
1k
views
ESP8266 Websockets problem
I am trying to set up a network of 4 esp8266 programmed via the Arduino IDE. The Network will have 1 server (esp8266 running in AP mode) and 3 clients (esp8266 running in STA mode). I would like to do ...
- 23
2
votes
0
answers
170
views
My PIR sensor output changes but digitalread high all the time
This is my final project, I have to communicate with two wemos d1 mini by LAN. The problem is that when I read the state of the PIR sensor it is "HIGH" all the time, but when I connect the led light, ...
- 21
2
votes
0
answers
417
views
MKR1010 serial communication
Is communication using tx/rx from an arduino to mkr1010 the same as any other serial communication?
I ask because I can't find any tutorials or info on connecting an arduino to mkr1010, but there are ...
- 21
2
votes
0
answers
789
views
Cannot POST to server. HTTP code -1. NodeMCU
I am trying to make a POST request with NodeMCU, but I get a HTTP status code -1.
Code:
#include <ESP8266HTTPClient.h>
#include <ESP8266WiFi.h>
#ifndef STASSID
#define STASSID "Wifi"
#...
- 121
2
votes
0
answers
251
views
Can't POST data with Arduino and ESP8266
I'm having problems with my Arduino UNO and the ESP8266 module.
I need to send values from Arduino to my PHP web page in this way:
http://www.server.com/km/db.php?id=53
the ESP8266 module is working ...
- 151
2
votes
0
answers
743
views
Cant get rid of Soft WDT reset using ESP8266
Im using ESP12E DevKit v2 (esp8266 wifi module) board for controlling relays and displaying DHT22 temp,humidity on web server. It runs smoothly but after while i always get a watchdog timer reset. (If ...
- 41
2
votes
0
answers
2k
views
Can I use ESP8266 and OV7670 to video stream on a web?
OV7670 image sensor, small volume, low operating voltage, providing all functions of a single chip of VGA camera and image processor. so I am using and ESP8266 to connect to internet and stream the ...
- 121
2
votes
0
answers
295
views
Fail using OTA - Network ports
I was using OTA to upload sketches to ESP ports I have ( around 10 ESPs).
For some time now - I'm having some kind of a trouble I would like to share, since I've read some similar topics, but all didn'...
- 909
2
votes
0
answers
344
views
ESP8266 based wifi IR Universal Remote for A/Cs
I have been working on a prototype for a wifi based universal remote controller and i have been using the IR-Remote library for the same. But i have a couple of questions which google couldn't help ...
- 151
2
votes
0
answers
99
views
ESP8266 WiFi Module disconnects from WiFi itself
#define id "qwerty"
#define password"123456789"
int relayPin= 4;
void setup()
{
Serial.begin(115200);
Serial.println("AT");
pinMode(13, OUTPUT);
pinMode(relayPin, OUTPUT);
delay(3000);
...
2
votes
0
answers
2k
views
ESP8266 can't read parasitic DS18B20 temperature (reset during conversion, 85°C)
tl;dr at the end
I was running two DS18B20+PAR temperature sensors without any problems for the last two years on an ESP-01 module running on 3.3V on GPIO 2 using a 4.7K pullup resistor.
Now, ...
- 21
2
votes
0
answers
35
views
Serve currently uploaded code from Arduino
I'm creating a project where multiple ESP8266 12-E's are connected together. I want to use ArduinoOTA with the HTTP option (described here) and I want to have one ESP be able to send its code to ...
- 131
2
votes
0
answers
2k
views
Reading +IPD response from serial.read() using Arduino UNO and ESP8266
I have a python server running on my PC and I am using an Arduino Uno (wifi enabled by a ESP8266 chip) as the client.
I can make the the server and client communicate using AT commands as shown below:
...
- 21
2
votes
0
answers
372
views
Adafruit Huzzah Feather not resetting and serial monitor garbage
Hi there,
I have an Adafruit Huzzah Feather project laid out as you can see in the diagram above.
Currently I am having trouble getting it to reliably reset and start the sketch. More often than ...
- 21
2
votes
0
answers
1k
views
Wake up ESP8266 with multiple GPIOs
I am building a ESP-07 based IOT device, that detects the status of 4 doors. The device must connect to WiFi and send an http request, when 1 of 4 doors is opened. I want to place a reed switch, for ...
2
votes
0
answers
1k
views
ESP8266WiFi client.print() strange response
I am using a NodeMCU, so ESP8266. I installed the core via the Boards Manager at the last version.
My goal is to control a GoPro camera through WiFi.
I am getting mad with these few lines of code:
...
- 21
2
votes
0
answers
4k
views
ESP-01 not running custom firmware
I have two esp-01 micro controllers that I'm trying to flash using the Arduino IDE but found some problems in the process. I followed step 1 of this tutorial to install all the dependencies to the IDE....
lpares12
2
votes
0
answers
3k
views
WifiEsp client TIMEOUT when put on a loop
Hello I have been using the WifiEsp to send and receive data from Thingspeak.
All is well until I put my http request on the Void Loop() section.
My Goal: I want to receive data every loop not on ...
- 139
2
votes
0
answers
2k
views
Why isn't ESP8266 connecting to wifi when calling yield()?
I'm experimenting with ESP8266 and I want it to cycle through various states: LED on/off, WiFi on/off and measure the connection time, deep sleep.
I wrote the following script, using millis() to ...
- 339
2
votes
0
answers
284
views
ESP8266-01 system param error
I'm using esp8266-01 connected to arduino nano.
Every time I tried to upload code to the esp8266 chip I get this error in the serial monitor:
system param error
56 45 52 31 00 00 00 00 ff ff ff ...
- 121
2
votes
0
answers
2k
views
Digital Vibration sensor on NodeMCU ESP8266
First Post.
I'm using a NodeMCU esp8266 connected to a digital vibration sensor. My project is to detect when a pager vibrates to then trigger through the maker channel of ifttt an outcome.
I'm ...
2
votes
0
answers
5k
views
Can upload programs to ESP8266 with Arduino Nano but not run them
I am trying to use my Arduino Nano to program my Generic ESP-01 Module. I want to use the module to control an RGB LED Light Strip but am not having much success, only errors....
These are my ...
- 43