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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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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 I select which ones to run. I found ESP8266 as a…
ahmadx87
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Arduino ESP8266 direct/fast control of the digital pins

How does one control a digital pin directly avoiding the slow digitalWrite or digitalRead?
qubit
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Can I power an NodeMCU trough VIN providing 5v

I have a spb 8266 board, an ESP-12E NodeMCU. I broke my micro USB. There's this piece of information but my case is unclear: Can I use the micro usb's 5v to power the board through the VIN or do any solution require more equipment than that ? (The…
Иво Недев
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ESP8266 I2C doesn't respond

I've got a huge problem using an ESP8266 from a Wemos D1 mini. I am using an STM32L073RZ to send a request to an ESP8266 to send me the time it has acquired from a WiFi connection. ESP code: #include #include #include…
Jackob2001
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Can I power ESP8266 with more than 3.5 V?

I am concerned whether I need to use a voltage divider to power my ESP8266 module. My concerns stem from the warnings that I have heard in multiple tutorials. Everyone seems to regard the ESP8266 as being very sensitive to supply voltage. Has…
Evan Gertis
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ESP 8266 does not respond at all

I have a ESP8266_01, and I wired up. It does not work for me. I have connected the ESP to an Arduino Uno. I am using a 5V pin from uP with a 3.3V regulator, and I have a voltage divider between RX(ESP) and TX(uP). And I am sure that the wiring is…
Chen
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ESP-01 does not run code after Deep Sleep

When using the deep sleep functionality on several ESP-01 boards, the boards require two resets in order to wake up properly (regardless of whether the resets are done by manually bridging the rst pin or by soldering a wire to do it from an…
sassoPera
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ESP8266 PHP Web Server

I need my ESP8266 web server to load my website files with .php extensions. So far I managed to load .htm .css and .js files from my SD card, but when I upload PHP files on my SD card, they won't run. How can I do that?
Kirill
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Connecting ESP8266 to Arduino Uno

I want to get data from ESP to my Arduino. I added firmware v2 to my ESP and it works correctly in my serial USB to TTL and shows the JSON data that I send to it. But when I connect to my Uno serial it shows some unknown chars. #include…
aliyousefian
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RTL8170 Web Server - client unable to connect

RTL8170 is a new module, which is in many ways better than the old ESP8266 module. We are able to flash this module with Arduino using an Ameba Writer, and it should be able to support any code that is supported by the ESP (with some adjustments).…
DemSec
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How to bring WiFi back up if woken from deepSleep(WAKE_RF_DISABLED)

I'm trying to build a sensor that should update an MQTT broker only if something changes. So every few seconds it's supposed to wake up just enough to check a few inputs, compare them with the last time it woke up, and only if there has been a…
chw21
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No response in Serial Monitor from es8266 with Arduino nano

I have exactly this model of esp8266: I removed Atmega328p IC from Arduino, and powered Arduino with USB cable. After all, I made this connection combinations: 1) ESP Tx > Arudino Tx ESP Rx > Arduino Rx ESP 3.3v > Arduino 3v3 ESP Dh_cp > Arduino…
dafie
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2 answers

ESP-01 wakes up from deep sleep and then hangs

I have found a number of other posts from people with the same problem but I can't find an answer. I have a small batch of ESP-01 boards, sold by Inland, and I wish to use deep sleep mode on them. I soldered a small copper wire from pin 8 (i.e. GPIO…
RobT
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Arduino Hardlid Unlocker

I am trying to build a unlocker on my hardlid for my ute. I have replaced the manual unlocking mechanism with 2 of these https://www.jaycar.com.au/slave-door-lock-actuator/p/LR8813. Now my code below works sometimes and I cannot work out why. The…
Ben
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Can't get deep sleep to work on Wemos D1 ESP8266

I have a Wemos D1 (ver. 2015-08) and I am trying to get it to sleep. I've managed to get it generally up and running/got wifi to work etc, but the deep sleep function is beyond me. I tried connecting RX<-D0 pin to RESET, also tried with a 10k…
Calum Nicoll
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