Questions tagged [esp8266]
For questions about the ESP8266 microcontroller unit, including programming it or using it in an IoT context.
124 questions
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Queries regarding send data to adafruit.io rest api using http post using Alexa skills
I have a custom ESP8266 & Arduino based home automation system that is subscribed to a MQTT topic & turns on/off multiple relays or adjusts fan speed. The data format in that feed is for ...
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IoT Devices are getting disconnected from WiFi, TP-Link AX1800
I'm having a weird behaviour of Tasmota (v.13) on 82866 devices, that hang up spontaneously (happens at different times, for different durations). For example, they can be connected for 12 hours and ...
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Mqtt in production
I am using Mqtt to build a project. I am wanting to move my whole work to prod ready.
My hardware is ESP-07 and custom PCB design the broker is mosquitto the app (Nodejs,react native)
I implemented ...
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ESP8266 bin files and memory layout - why multiple bin files in ESP MCU development process
I see that as per the link https://github.com/esp8266/esp8266-wiki/wiki/Memory-Map, in SPI flash ROM layout table (without OTA) there are 5 bin files that are flashed to esp8266. Though there are ...
- 21
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Serial (UART) WLAN bridge with ESP8266
I have an installation with an MCU with proprietary (unfortunately) and immutable firmware, that provides a serial interface to connect a PC or laptop to. Planning to make it accessible via the ...
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Can the relay be controlled over serial on the ESP8266 WI-FI?
I recently purchased an ESP8266 WI-FI which looks similar to this but is actually this one with the extra row of pins by the serial lines. I'm following along with the instructions on the first page ...
- 101
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218
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Temperature sensor MLX90614 read object temperature above 300°C
I want to make sure the sensor read normally but when i run it to read the object temperature, the result is 382.19°C. I have search for tutorials, and also the error but i couldn't find it except for ...
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Trying to read thermostat value controlled by Alexa with ESP8266
this is my situation:
I have a thermostat in my bathroom which is controlled by Alexa. Now I want to automate my ventilation. For this I want to use a ESP8266 NodeMCU with a humidity sensor and a ...
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Lost power supply while flashing SONOFF S20
Yesterday I successfully flashed three out of four S20 v2.1.0 devices with ESPHome firmware. While flashing the fourth one, I accidently interrupted one of the cables (most likely the power supply [3....
- 111
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ESP8266 with Dual Relay AND STM8S103
I'm looking for an ESP8266 board with a dual relay for one of my projects. Yes a Sonoff Dual - quite answers all my needs, beside the part of messing around with soldering and the for need more GPIO's ...
- 919
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Are Node MCU or Wemos D1 mini stable
To give some background, I created a WiFi IoT device using ESP 11E/F. I was doing basic stabilization using capacitors and resistors, and although some chips mostly were working okay, some chips (~50%)...
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How to control an ESP8266 via the Wi-Fi?
Summary
I would like to build (ideally based on ESPHome) a device with a buzzer I can trigger remotely via the network.
Context
I have several systems built around my home automation system:
Home ...
- 895
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Esp8266 unlinking very fast [closed]
Pls how do I get the length of the following GET request
GET /data/2.5/weather?q=San%20Francisco,us HTTP/1.1\r\nHost: api.openweathermap.org\r\n\r\n\r\n
GET /api/weather/insert.php?temp=74.6&him=...
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ESP OTA from Github
I want to be able to program my ESP32 (same for ESP8266) remotely, I have used ArduinoOTA without problems, and I can upload the file into the ESP selecting the local file that I want to flash.
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Mini weather station project not working
I have been trying to do this project for 2 weeks. The project is about mini weather station. It uses esp8266, DHT11 sensor,BMP180 sensor and FC 37 rain sensor. I have taken reference from the ...
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840
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switching setDebugOutput off on esp8266
This thing is driving me nuts.
I tried to debug my MQTT secure connection on nodecmu. Following some post from year 2015 I was switched on debugging output with Serial.setDebugOutput(true). Now I ...
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Temperature sensors: DIY ESP8266 vs product
I want to deploy few temperature sensors in my flat: few rooms, two balconies, one outside. Sensors should send data into my server (thinking about Rpi with Prometheus DB and Grafana dashboard). ...
- 141
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323
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How fast can I send data to firebase from nodemcu 1.0?
I was sending some variable value to the firebase database I have created: how fast can I send it? What would be minimum time interval between two values nodemcu can send and fire base can receive? I ...
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108
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Cayenne IOT widgets greyed out using ESP8266 NodeMCU-12e
I'm using an ESP8266 NodeMCU-12e, connecting to Cayenne IOT platform. Most things work fine (I can update most widgets using virtual channels), but some widgets are unavailable (greyed-out), or simply ...
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Custom flashed Sonoff basic doesn't work when connected to main power
I flashed a sketch to a Sonoff basic switch R2 through Arduino IDE (with FTDI).
Flash is completed and Sonoff runs the sketch successfully.
The code is just a typical setup for making esp8266 a soft ...
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520
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Not getting LWT MQTT Arduino
I'm trying to test a two combined examples: OTA and MQTT.
My goal it to check a LastWill when disconnecting an ESP8266 device. Surprisingly, a LWT is not sent to designated topic.
code has not actual ...
- 919
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271
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get trigger from IFTTT - using ESP8266
I'm using a Wemos mini, to switch on the light.
I'm trying to figure out how to combine IFTTT and Sunset and Sunrise from Weather underground to trigger the lights ON.
All examples I find, is how ...
- 919
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ESP8266 and MQTT not working with new router [closed]
Got a new router from the ISP and my ESP8266 NodeMCUs are causing problems, they need very long to connect to WiFi (3-4 mins), which wouldn't be that big of a problem, but they also don't connect to ...
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z wave and zigbee development boards
ESP8266 provides an amazing environment to build iot devices for smart home. I managed to build all kinds of gadgets raging from simple temperature and humidity recorders to more advanced actors with ...
- 137
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What are lower latency alternatives to using MQTT brokers with the ESP8266
I'm experimenting with the nodeMCU board attempting to proto type out an IoT project. My first iteration involved using an MQTT broker to send messages between my computer and the board. Due to the ...
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