Questions tagged [esp8266]
For questions about the ESP8266 microcontroller unit, including programming it or using it in an IoT context.
124 questions
1
vote
2
answers
42
views
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 ...
- 11
2
votes
0
answers
147
views
Where is the partition table on ESP8285 (Tasmota)?
Background
I'd like to replace the Tasmota firmware of a WiFi Socket with my own firwmare.
The TTL port of the ESP8285H16 (=ESP8266 + 2MB flash) is not accessible without braking the case and I need ...
- 139
1
vote
1
answer
650
views
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 ...
- 919
1
vote
1
answer
174
views
Flashing Athom Wall plug ESP8285
I'm trying to re-flash an Athom plug (bought pre-flashed with HomeKit firmware) using FTDI adapter.
Shown here is the exact ESP8285 (different plug sub-model). AFAIK ESP8285 is a similar MCU to ...
- 919
0
votes
1
answer
298
views
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 ...
- 123
1
vote
0
answers
119
views
Shelly 2.5 webui not available
I’ve bought a pack of Shelly 2.5 from eBay. It seems they are some kind of special edition since they come with HomeKit support. The HomeKit id is printed on the device. Even though it’s not ...
- 11
1
vote
0
answers
191
views
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
1
vote
0
answers
230
views
Bare metal or Non OS SDK setup for ESP-01 ESP8266 - Issues in setting up (esp dev toolchain on ubuntu 20.04 virtual box )
I bought ESP 8266 ( ESP 01 ESP 8266) online as I wanted to start development from scratch (direct flash from laptop instead of using arduino, not to use rtos but as much baremetal as possible).
As per ...
- 21
0
votes
0
answers
110
views
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 ...
1
vote
1
answer
1k
views
LC Technology Relay x4 Reset to Mode 1?
Hi have a LC Technology Relay x4 board with a custom-firmware (using ESPHome) on the ESP01 attached to it.
As a curiosity, I pressed on the S1 switch to see if it's doing something. The "normal&...
- 171
0
votes
0
answers
53
views
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
2
votes
1
answer
2k
views
ESP32 or ESP8266 220v button as input
As per title I'm, looking a way to detect the press of a button powered at 220v ac through a gpio pin of the ESP32.
The simplest solution found seems to be an octocoupler, but are there devices that ...
- 23
0
votes
0
answers
218
views
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 ...
- 1
1
vote
1
answer
258
views
Can I make individual callbacks to handle each MQTT topic?
I'm using the PubSubClient on some ESP-01 modules to make smart/connected devices around the house. I'm not super fond of the way all incoming messages get routed to the single callback. When I get a ...
- 111
2
votes
1
answer
117
views
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 ...
- 21