Questions tagged [espressif]

Espressif Systems (688018) is a public multinational, fabless semiconductor company established in 2008, with headquarters in Shanghai and offices in Greater China, India and Europe. We have a passionate team of engineers and scientists from all over the world, focused on developing cutting-edge WiFi-and-Bluetooth, low-power IoT solutions. We have created the popular ESP8266 and ESP32 series of chips, modules and development boards.

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ESP8266 EEPROM Reading extra character

I am very very new to ESP Programming. I am trying to store Strings into EEPROM of ESP8266. I am storing the string into eeprom successfully but while reading it from EEPROM extra character 'd' is ...
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29 views

Stream esp-32 camera to RMTP server like YouTube

I am doing research for a project in which I need to play with camera streams. After multiple hit and trails and googling I am not getting even close to the solution for streaming ESP-32 Camera stream ...
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Creating a router with ESP32 and SIM800c

I am trying to create a device which is a combination of ESP32 and Sim800c. This device (Master) will start AP mode on ESP32, so that other devices (Nodes) will connect to this AP. The Sim800c will ...
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How to change the OUI (Organizationally Unique Identifier) of the WiFiNINA module

There are only examples for ESP32 wifi modules to change the mac address of the device, but I don't know if I can use the same library for the WiFiNINA module. Is it possible to change the OUI of the ...
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434 views

esp32-cam publish image to mqtt

I want to publish image capture through ESP32-CAM to MQTT. Have following code : #include "WiFi.h" #include "esp_camera.h" #include "esp_timer.h" #include "img_converters.h" #include "Arduino.h" #...
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35 views

Code uploads successfully on esp8266-01 but doesn't run

I am using esp8266-01 board. It was working fine few days ago, the codes uploaded and ran successfully. But now that I upload code to it, it gets uploaded successfully but it doesn't work. I am using ...
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265 views

esp32 arduino wifi disconnect

I have this code running on ESP32 connected to SVM30-J #include <WiFi.h> #include <PubSubClient.h> #include <Arduino_JSON.h> #include <svm30.h> // Replace the next variables ...
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67 views

ESP8266 NONos SDK with Arduino ide or VSCode PlatformIO

I have few questions about esp8266 programming. I am trying to make a iot application with esp8266. I have to run esp on two modes and create tcp server and http client. I did this application with ...
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89 views

ESP32-CAM interfacing with CCS811+HDC1080+BMP280

I want to measure Temprature, Pressure, Humidity and CO2 in a room with ESP32-CAM & CCS811+HDC1080+BMP280 Since this module is combination of 3 sensors. Can I integrate it with ESP32-CAM over ...
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129 views

esp32-cam reading bme280 with Arduino IDE

I am trying to interface BME280 with ESP32-CAM (Yes because later I need to take pictures also). Was following this tutorial. The BME280 board I have it has VCC, GND, SCL, SDA pins for hardware I2C. ...
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Lg g6 can't find Esp32 bluetooth

My lg g6 cant find esp32's bluetooth. Lg g6 bluetooth is fine as i can connect other devices Esp32's bluetooth is fine as i can connec from my samsung s9 to the esp32. Tried reseting and clearing ...
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148 views

Send HTTP request from Arduino UNO+ESP8266

I am trying to send an HTTP request from from an Arduino UNO through an ESP-01 connected by Serial. Communication with the ESP and connection to the AP work fine. But when i try to send an HTTP ...
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385 views

How to upgrade ESP8266 NodeMCU SDK from V2.5.2 to V3?

ESP.getFullVersion() output: SDK:2.2.1(cfd48f3)/Core:2.5.2=20502000/lwIP:STABLE-2_1_2_RELEASE/glue:1.1-7-g82abda3/BearSSL:a143020Connecting to DO_231455 I upload sketches from the Arduino IDE. How ...
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206 views

OTA updating the ESP32 from a separate server

I have an ESP32 project which I'd like to be able to update OTA. The trouble is that it is in deep sleep for approximately 15 minutes before waking up, connecting to WiFi sending an MQTT packet then ...
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47 views

Online Json Service for Esp32

I'm building a simple outdoor temp and humidity sensor with an esp32 I've aquired but I need a platform that I can submit the Json to so that then my laptop can make an http request to get the Json ...
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1answer
544 views

Stack smashing protect failure ESP32 with Modbus RTU

I'm doing a project using an ESP32 TTGO with LoRa, the Max485 and a WELLPRO ADAM 8082 for Modbus communication. I'm trying to use the ESP32 as a master to and the ADAM as a slave. I'm also using Node-...
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819 views

ESP32 bluetooth discovery parse names

I'm running a sample code from ESP32 examples and I'm scanning available BLE devices. I can see device MAC address etc. But for few devices I can't see their names.I am using ESP-WROOM-32 with ...
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47 views

A few questions on the first steps with an ESP32/ESP8266 NodeMCU [closed]

I would like to know what are the first steps, as a good practice, when receiving a new ESP based NodeMCU. For example: Checking if everything works fine After you connect to the relevant COM port, ...
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445 views

Adafruit esp32 Feather Failing to compile

So yesterday, I was able to upload/compile given example code to the Esp32 Huzzah board. Today I couldn't even compile. Even carefully using the tutorial adafruit provides. I was getting errors as ...
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2k views

Arduino Uno & ESP32 communication using RS485

I am trying to establish a communication between Arduino Uno ( Master) and ESP32 (Slave) using RS485 protocol (using MAX485 module). I have successfully done this between two Arduino Unos. ...
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133 views

Clock cycle count count for the same command is not equal in ESP32

I am using ESP32 Pico Kit with Arduino Ide. I want to measure operation cycle for a few commands. The code is so simple as below: void setup() { Serial.begin(9600); } void loop() { unsigned ...
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415 views

WindowsError(31, 'A device attached to the system is not functioning.') in arduino

Having board esp32 devkit v1, to get started with arduino ide (installed recommended boards for esp32) I marked board asDOIT ESP32 DEVKIT V1 (as no other options as like ESP32 DEVKIT V1 ) so upload ...
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315 views

How to / is it possible to change Vendor Name in ESP8266-12E?

I am aware of that it is possible to change hostname for ESP8266 but I want to change vendor name also so that it lists my company/product name in routers/firewalls. Is it possible?