Questions tagged [esp32]
A cheap and low-power microcontroller family using Tensilica Xtensa LX6 CPU cores with integrated WiFi and dual-mode bluetooth.
938 questions
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ESP32C6 + PN532 NFC Reader (HW-147C) SPI Communication Not Working - "Didn't find PN53x board"
I'm trying to get an NFC reader (PN532 module, HW-147C model) working with my ESP32C6 using SPI. I tried using multiple libraries (seeed-studio, Adafruit, and some on github, but nothing worked).
This ...
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Missing data when communicating over UART
So I am working on an Arduino project and have trouble communicating over UART.
I have a SIM7600G-H 4G Module from Waveshare and hooked it up to an Arduino Nano ESP32. The connections are as follows:
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Is there a c++ library for the GitHub API and Arduino compatible?
I'm logging some data using an ESP32 board, and I need the data logged to be uploaded from the ESP32 to one of my repositories on GitHub.
Are there any C++ libraries for the GitHub API compatible with ...
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problem with scripts in Arduino Lab for MicroPython
I am trying to set up an Arduino Nano ESP32 so that I can code in MicroPython. I successfully installed Arduino Lab for MicroPython and flashed the firmware onto the device, but when I try to run the ...
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ESP32-S3 continuous reboot after flashing larger firmware
I’m facing a persistent reboot issue on one of my ESP32-S3 boards after flashing a larger firmware binary. Here’s a breakdown of the problem:
🔧 What’s Happening
After flashing my project (which ...
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How to receive data from an Rasberry Pi on ESP32-Cam?
My use case is an ESP32-cam that serves two purposes:
HTTP feed (accessed by a Raspberry Pi 5 which processes stream and provides a response)
Servo Motor microcontroller: Receives response from ...
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How does a sensor data move from physical layer to application layer
I have used Arduino IDE to program a IOT gateway using ESP32 and W5500 ethernet module to use them as a ethernet webserver.
I wanted to know for educational purpose, I know that sensor belong to ...
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Connect ESP32-CAM to L293D
Disclaimer: I'm a programmer, not an electronics expert. I built this car using an Arduino Uno, and now I want to add a camera to it. I’ve tried researching online, but I couldn’t find much ...
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Can't sync ESP32 with Blynk
I was trying to display the readings of my dht11 sensor on the Blynk dashboard but I am struggling a lot. A little help would be really appreciated.
#define BLYNK_PRINT Serial
/* Fill in information ...
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Problem Parsing NWS Severe Weather Alert API using Arduino_JSON.h [closed]
I have been using Open Weather and Weather Undground APIs for some time. I recently learned the National Weather Service has an API for alerts. I can print out the raw data but not able to parse it. ...
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ESP32 Upload Fails: “Failed to connect to ESP32: No serial data received” (Worked Previously)
I’m trying to upload code to my ESP32 board using the Arduino IDE, but I’m consistently getting the following error:
A fatal error occurred: Failed to connect to ESP32: No serial data received.
For ...
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Getting a WDT reset on ESP32
I have a project that uses a GY-53 BMP180 and ESP32.
Each time I connect ESP32 to USB after uploading, I get this error:
22:27:27.352 -> rst:0x8 (TG1WDT_SYS_RESET),boot:0x13 (...
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ESP32 pressure sensor readings (RFP602)
I have two RFP602 sensors that I use.
One connected to GPIO2, the other to GPIO4, each connected to a 1Mohm resistance.
The sensor connected to GPIO2 reads the data how I want it, I have to press a ...
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How can I provide a custom TLS CACert bundle with Arduino on ESP32?
With an ESP8266 it's pretty easy to pass a custom bundle; eg:
BearSSL::WiFiClientSecure client;
BearSSL::CertStore certStore;
int numCerts = certStore.initCertStore(FSTYPE, "/certs.idx", &...
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"Stack canary watchpoint triggered (loopTask)" when synchronizing with Arduino Cloud IoT (ArduinoCloud.update())
I have created a sketch that updates 195 variables : 16xString variables, 34xfloat, 52xint, 107xbool.
Notice : I'm using the IDE tool instead of the included Cloud IoT compile (because I have a pb ...
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How Can I Get My ESP32 to Work with a 3.5-inch ILI9486-Based RPi Display Using SPI in Arduino IDE?
I'm working on a project where I need to connect my ESP32 (WROOM) to a 3.5-inch, 480x320 resolution LCD designed for the Raspberry Pi, which uses the ILI9486 driver (as suggested by the lcd wiki). I’m ...
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P10 LED Display Character Overlaying with DMD library
Hi, I am using p10 Led display and trying to make digital clock. it works fine but after 2 or more weeks later without any switch off there is a overlaying start on characters. why this happening I ...
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Not able to control servo motor using ESP32 board when RGB LED is used
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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`__has_include` macro on ESP board
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 ...
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External EEPROM Read and Write Issues: Junk Values in I2C Communication
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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WiFi credentials pulled from an SD card fail, but work hard-coded?
I'm trying to move my hard-coded wifi SSID/password credentials to an SD card so they can be more easily changed, but when passing the SSID to the WiFi.begin() function, I'm getting a status code 1 - &...
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How do I enable CONFIG_SPIRAM_SUPPORT for ESP32 S3 on Arduino?
I'm trying to use PSRAM with the TFT_eSPI library, but it fails because CONFIG_SPIRAM_SUPPORT isn't defined.
In Arduino -> Tools -> PSRAM I selected OPI PSRAM as the board manufacturer (the ...
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Sending data through LoRa with ESP32-E
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 ...
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Common Ground Between Arduino and ESP32 - Can I Re-use the ESP32 GND Pin for a Potential Divider
I am trying to connect an ESP32 to an Arduino Mega via Serial Communication using the UART 2 ports on both microcontroller boards.
There needs to be a common ground between the ESP32 and Arduino. ...
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Xiao ESP32-C6 in CircuitPython
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/...
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