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Mosquitto only works locally, cannot connect from ESP32 I installed Mosquitto on Windows 10 and the broker works locally. I can publish and subscribe between terminals on the same machine without any ...
Norbert Bukała's user avatar
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-3 votes
0 answers
23 views

im using ov2640 - 75MM cam with esp32 cam module for collecting the images for my project .using this code . here is the code - /** * Optimized for OV2640 2MP 75mm Camera Module * Corrected for ...
Anjali 22's user avatar
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0 answers
19 views

Maybe someone has a code example or knows how to switch the frequency on akk alpha via esp32. I currently have VTX akk alpha 25w. I have already tried all possible options, but I got to the point that ...
Сергій Сергійович's user avatar
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Best practices
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0 replies
32 views

It is almost a week that I'm trying to find a ready to use cloud solution for my IoT projects which mostly are based on ESP32 hardware. My Ideal is that I develop the embedded system with Arduino ...
AKTanara's user avatar
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1 vote
0 answers
86 views

I'm not good at English, so I used a translator. Please understand that we cannot show all the code. Currently, I am trying to open AP mode in ESP32 and send HTML information to the connected person. ...
조민석's user avatar
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Advice
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3 replies
96 views

I'm facing Internal server error Error code 500 while running the arduino IDE or downloading any library. Is it my system error or some error on the official website server.
Sardar Farhan's user avatar
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Best practices
1 vote
3 replies
107 views

I am using esp-tflite-micro to make some inferences, but it is taking too much time to finish a single inference; enough to trigger the watchdog of the idle tasks. I know I may increase the watchdog ...
Rafael Santiago Altoé's user avatar
  • 79
0 votes
0 answers
49 views

I'm a bit stuck as I've written some code for an ESP32 which is supposed to do two things: Retrieve some JSON from an HTTP source, and parse it with ArduinoJSON - this works in isolation; Display ...
blurbm's user avatar
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0 votes
0 answers
42 views

ESP-IDF 5.3.4, No Arduino, Win10. I've loaded an official "station" example which demonstrates how to connect ESP32 to a home wifi access point. Made only 2 changes: .ssid and .password in ...
Noideas's user avatar
  • 127
-4 votes
1 answer
158 views

I have an ESP32-S3-N16R8 devkit board with two USB ports and I have a device that communicates via Serial USB. I want to read serial data from ESP32 board and process it. So the ESP32 board should act ...
Alex's user avatar
  • 67
2 votes
1 answer
162 views

The ESP32 cant find the NFC module (Pn532). I used the I2C and SPI without any promising results. I used the Example code and edited the Pins Every time I only Get this result: Serial.print("Didn'...
Moritz Ende's user avatar
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0 answers
63 views

I’m trying to connect an ESP32 + SX1262 node to my ChirpStack 1.1 server in IN865 region using RadioLib (LoRaWAN 1.1 OTAA), but OTAA fails with error -1116 (RADIOLIB_ERR_NO_JOIN_ACCEPT). Setup ESP32 ...
Harshit Kumar Shakya's user avatar
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1 vote
1 answer
160 views

I'm using an esp32 s3 (dual core) and I'd like to transmit DMX signals. The thing is that I have set the resolution as such that each tick is 4us (should be) but what I am getting is bits with way ...
Mart's user avatar
  • 544
0 votes
1 answer
97 views

Is it possible that VSCode code completion only offers those elements in the list that I have already used, but does not read the header files of glibc and the given environment? I use the Espressif ...
zamek 42's user avatar
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0 votes
1 answer
183 views

I'm using the Waveshare ESP32-S3 7" LCD with GT911 touch and a built-in SPI SD card. The kit has fixed wiring for the display, touch, and SD, so I can't change the pin mapping. Here's the issue: ...
amirre's user avatar
  • 31
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0 answers
49 views

While serving a web interface on ESP32 controllers, I find it useful to fall back providing an on-device AP, if the configured WiFi AP is not available after some timeout. This way the device can ...
dronus's user avatar
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1 vote
0 answers
71 views

I want to send data to esp32 via WiFi using UDP, but it'S returning 0 bytes (as 0 bytes sent) For Esp32 I tried with another device (different mobile app), and it's working fine.(Esp32 is OK) Here is ...
Sanjay's user avatar
  • 21
0 votes
0 answers
48 views

I have a google cloud run function that I need to connect to using my ESP32 so that I can obtain a token. But unfortunately, it always gives me connection refused error. I have added the google root ...
Lakindu Muhandirumge's user avatar
  • 1
0 votes
1 answer
104 views

I am still quite new to microcontrollers and ESP-IDF so I am not familiar with the ins and outs of the framework. I wrote a fairly standard code for logging button press and release: #include <...
shah110's user avatar
  • 1
1 vote
0 answers
99 views

I’m working on an ESP32 project that uses WiFiManager (https://github.com/tzapu/WiFiManager). The first connection works fine: when there are no saved credentials, the ESP32 starts an Access Point, I ...
nima's user avatar
  • 13
0 votes
0 answers
72 views

i have a mainboard which runs on wroom-32e (designed by someone else) and trying to get software work done by myself. I installed Adafruit library and pasted example code. Assigned all pins according ...
Kerem B's user avatar
  • 11
-1 votes
1 answer
204 views

I implemented a decision tree with if-else statements involving unsigned 16-bit variables (features) and constants (thresholds), as shown below: static inline int16_6 tree(const uint16_t *input) { ...
Jefferson Cavalcante's user avatar
  • 33
0 votes
0 answers
57 views

I'm trying to connect an ESP32 (as Bluetooth master) to an Arduino Uno that has an HC-05 Bluetooth module attached. My goal is to send serial data between the ESP32 and the Uno. Setup: Arduino Uno ...
Osama Tharwat's user avatar
  • 1
0 votes
0 answers
61 views

I am trying to write data to an SD card on an ESP32-WROOM. My function for file creation is: bool create_file(const char *file_path, const char *data) { if (!file_path || !data) { printf(&...
mauli02k's user avatar
  • 81
1 vote
0 answers
60 views

It seems there was some confusion on what I was asking. The actual question is: What can I do to build a WifiController and return it from a function without needing to create the init_handle outside ...
chw21's user avatar
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1 vote
1 answer
102 views

I’m building an analog clock on an ESP32 Wrover Kit with a TFT LCD using the TFT_eSPI library. The clock displays the correct time using NTP, but I have a problem with the hands: When the hands move, ...
nima's user avatar
  • 13
0 votes
0 answers
143 views

I am currently facing a problem that I run out of idea. I have a waveshare ESP32-S3-Touch-LCD-2 (https://www.waveshare.com/wiki/ESP32-S3-Touch-LCD-2) that features a display, SD cardslot and camera. ...
bennnil's user avatar
  • 35
2 votes
0 answers
93 views

I am using an ESP32-C3 Dev Module on Windows 11 with Arduino IDE (ESP32 package 3.3.0). Minimal sketches, such as the following, immediately trigger a watchdog reset during startup: void setup() { ...
Luis Silva's user avatar
  • 21
0 votes
0 answers
111 views

I am building a project that uses esp_lcd,and the TSL2591 component from the component library. To my knowledge these are both well maintained and commonly used in the idf, and should be able to ...
LambdaLantern's user avatar
  • 11
0 votes
0 answers
47 views

I am fairly new to programming so I have no idea if what I am doing is right here. This is the datasheet page 71 is most helpful I think, or 71-75. Which I have been following, as well as some ...
Anon's user avatar
  • 1
1 vote
0 answers
138 views

Win10, Latest VSCode. For quite some time, I've been on ESP-IDF 5.0.2 and VSCode version from 2023. 5.0.2 version was installed manually with an offline installer from Espressif. Used it to program ...
Noideas's user avatar
  • 127
0 votes
2 answers
102 views

I've got an ESP32-POE running a web server as well as publishing MQTT to a broker. I want to publish MQTT every 60s but sticking that delay into void loop(void){} means server.handleClient(); is also ...
Spags's user avatar
  • 19
0 votes
2 answers
114 views

I built a custom PCB with an ESP32-WROVER-IE-N8R8 to read a pressure difference in a filtration system. The data is then send via MQTT to a MQTT Broker (Mosquitto) on a Linux Server. This happens ...
ThoryF's user avatar
  • 11
0 votes
1 answer
198 views

My application using Zephyr RTOS v4.1.0 on ESP32-WROVER-IE and ESP32-S3-WROOM-1 to implement MCUmgr over Bluetooth (SMP transport) based on the smp_svr sample builds successfully, but flashing results ...
Sude's user avatar
  • 13
2 votes
0 answers
58 views

I recently built myself a ham radio repeater and used ESP32 for its control unit. I added Telegram control capabilities to get some status info and force some actions remotely. Using FreeRTOS made ...
Javier López's user avatar
  • 21
2 votes
1 answer
105 views

When I've developed for the ESP32, I've always included the linker attribute IRAM_ATTR when I've declared functions called from interrupts. This is based on https://docs.espressif.com/projects/esp-idf/...
axlan's user avatar
  • 1,013
0 votes
1 answer
85 views

I'm trying to read data from a RC-522 with an ESP32 in C.The problem is that even if I aproach the card to the RFID reader it doesn't modify the value in ComIrqReg. bool mfrc522_request(void) { ...
Emanuel's user avatar
  • 9
0 votes
0 answers
64 views

I implemented a ping function for ESP-IDF 5.4.2, but sometimes I get the error: "E (185212) ping_sock: send error=0". I also tried using a SemaphoreHandle_t, but the result was worse than ...
scorona85's user avatar
  • 151
0 votes
0 answers
75 views

I am using esp-idf v5.5 with esp-sr v2.1.4. below is my updated github repo with complete build available (complete!). I thank you greatly for your help. github_repo : https://github.com/abdulbaseer-1/...
Abdulbaseer Baseer's user avatar
  • 11
0 votes
1 answer
116 views

I'm experiencing an issue with the TMC2209 driver library. I'm using it to control a stepper motor with StallGuard enabled. The setup works correctly when compiled and uploaded via the Arduino IDE — ...
Kyle Harte's user avatar
  • 35
0 votes
1 answer
91 views

I have a development project for ESP32 using IDF ver 5.5.0 in the vscode environment and have it working including support of OTA updates. I have read online that the project.bin file can be ...
ADL's user avatar
  • 121
0 votes
0 answers
81 views

I try to setup a 10bit pwm with analogWriteResolution(LED_R, 10); but I get the following output: [esp32-hal-ledc.c:793] analogWriteResolution(): analogWrite resolution cant be set due to selected ...
vlad_tepesch's user avatar
  • 7,027
0 votes
0 answers
59 views

I'm having gap problems with quaternions, I need help, please. Hi guys, I have a question about the BNO055 sensor. I'm trying to use its quaternions to use in Unity, but it sometimes “loses” its ...
Gustavo's user avatar
  • 1
2 votes
1 answer
117 views

I am trying to write a class to help me interface a Bluetooth module with an ESP32 over serial, but I am having trouble. Sometimes, the Bluetooth module sends events without being prompted, so I'm ...
Luke's user avatar
  • 33
1 vote
1 answer
149 views

On a Sunton display with integrated ESP32-S3 N16R8 I want to display JPEGs from SD card as a slideshow. The vendor provides an Arduino demo ZIP based on LVGL 8.x (dev). I managed to get the display ...
ula.uvula's user avatar
  • 235
7 votes
1 answer
83 views

I want to wake up the ESP when it receives a message on the UART2 port. However, with the following code it never wakes up, even if a message is received. I am using the Lolin 32 Lite Devboard. #...
Tillmann's user avatar
  • 133
0 votes
0 answers
84 views

The ESP32 esptool.py uses a so-called "stub", that is a small application uploaded and run from ESP32 ram, to handle erasing and writing of ESP32 flash. It's code seems to be here https://...
dronus's user avatar
  • 11.4k
2 votes
0 answers
108 views

The captive portal only fails to trigger on Android. When I connect from macOS, the portal opens automatically and loads the root HTML page as expected. On Android, I can see proper DNS and HTTP ...
Jayden Joe's user avatar
  • 21
-2 votes
1 answer
306 views

The error of the form: "esp_task_wdt_config_t" was not declared in this scope, appeared even after calling the library. Since I am moving from Arduino IDE to PIO, I initially added the ...
Zaid Ali's user avatar
  • 11
1 vote
1 answer
52 views

I am using the ESP32 FlashDownload Tool version 3.9.5 to burn my ESP32-C3 boards. But I have issues getting the public key digest for secure boot into the chips. There is a parameter '...
Jens's user avatar
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