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Questions tagged [esp32]

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A cheap and low-power microcontroller family using Tensilica Xtensa LX6 CPU cores with integrated WiFi and dual-mode bluetooth.

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I was attempting to discover how to identify my ESP32 development board. I was wondering how to discover the abilities it supports. Here's a snapshot of my board: This was related to a question I ...
raddevus's user avatar
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I want to use an external 32kHz crystal for RTC with ESP32 S3, but I didn't see any example or tutorial for Arduino IDE, Even when I asked ChatGPT, it gave me some example but the code gave library ...
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I have an ESP32 controller and am using AT24C1024 for communication. In my code, I am trying to access an external EEPROM at positions writing data from 0 to 10000 position data is = '1'. However, ...
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I have NodeMCU ESP32s and I am using Arduino framework. I want the ESP to connect to local Wifi, so I set AP on ESP and send to it UDP packet with WIFI credentials. I am doing it in a loop until sent ...
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I'm new in using ESP32 boards. For some reasons, the servo motor is not working when RGB LED code is used. I have looked everywhere and I did not see any solution for this. Any help is appreciated. ...
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So I recently bought two Xiao ESP32-C6 from SeeedStudio; they work with Arduino code out of the box. Now I want to flash the CircuitPython bootloader from here https://circuitpython.org/board/...
Clóvis Fritzen's user avatar
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I am working on a code for ESP boards that can be used on either ESP32 or ESP8266 and I want to make sure I include the correct libraries. I know I can check if ESP32 OR ESP8266 are defined, but I ...
SagiZiv's user avatar
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On my esp32 project, I use Preferences.h to store some values over rebooting. I have the issue that mypref.begin("nameSpc", false); returns 0 in one case, but works in a other part of the ...
MM_303's user avatar
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I'm using ESP32-C3 as hardware and Arduino IDE as my software core. I receive a data from MQTT server and want to send it to another board using serial port as a hex number. However, it gets sent over ...
Eric Matevosian's user avatar
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I am having some issues with connecting to WiFi with an ESP32 board. It is very sloooooooooow. The first few times I tried, I left it alone for 20 minutes and it still wasn't able to connect. So I ...
Deling Ren's user avatar
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I'm using Freenove's ESP32 WROVER Module with their GPIO expansion board as shown in the image below: I'm trying to integrate Sparkfun's microSD module in the circuit. Here's my sketch. However, I'm ...
danielperaza's user avatar
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I'm new to ESP32 development and I'm trying to compile a program in the Arduino IDE to record the vibrations by an ADXL345 sensor. However, during compilation, I encounter a "ModuleNotFoundError: ...
Revolucion for Monica's user avatar
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I have an Esp32-E from Firebeetle and LoRa from SBComponents. On both of these devices there are RX and TX pins. I believe that LoRa pins are just an extension of pins found on the Firebeetle. My ...
Roiskam's user avatar
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The code works successfully but nothing happens in the serial monitor, what do I do as I've tried almost everything.
Ryan's user avatar
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I'm encountering persistent errors with the sample code provided for my smart home kit project. Despite conducting extensive research and troubleshooting efforts, I haven't been able to find a ...
Mars's user avatar
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Recently bought a nano esp32 to play around with the small size and wifi module. However I'm plagued by the No DFU capable USB device available message. My efforts and deductions: I can connect to ...
Nebulous's user avatar
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When i try to upload code to the esp32 the following error shows up in the command line: A fatal error occurred: Packet content transfer stopped (received 8 bytes). I use platformio in VScode the ...
exo's user avatar
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I have ESP32-CAM that I plan to use as a simple security camera. I tested the software and it was working perfectly. I programmed it using FTDI programming board with 5V. After testing everything I ...
Eren Sönmez's user avatar
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For a project, I need to take a picture with the ESP32-CAM, save it to an SD card, and then have the Arduino UNO access the image. I have the ESP32-CAM with OV2640 connected to the ESP32-CAM-MB, which ...
elvishpotato's user avatar
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I'm attempting to acquire angle values from an MPU6050 IMU sensor using an ESP32-DevKitM-1 microcontroller. My setup contains the ESP32 board, the MPU6050 board, and an SD card reader to save the ...
Runsva's user avatar
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I have two ESP32 cards. I want to set one of these cards as Master and the other as Slave and communicate via SPI. I have done this before on Arduino Uno, but I cannot do this on ESP32. Below are my ...
Enes Orhan's user avatar
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I want both, a Config file on the MSC and also FW Update via USB. Right now I can choose on a Hold Button which should be done. But it shows always two Drives instead of one. One Drive is empty and ...
Ripper121's user avatar
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I'm trying to use an ISD1820 recording module with the ESP32, except I want to store the recordings and send them over Wifi rather than playing them back. The ISD1820 has an output for an 8-ohm ...
user89016's user avatar
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I have connected a Reyax RYLR998 LoRa module to an ESP32's UART2, but AT commands passed through Hardware serial are not working. #define RXD2 16 #define TXD2 17 void setup() { Serial.begin(...
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I want to send modifier keys like shift, alt, ctrl, etc. without any other key. It should be theoretically possible due to the fact that it works for my normal keyboard (tested it with Xoutput and ...
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