Questions tagged [esp32]
A cheap and low-power microcontroller family using Tensilica Xtensa LX6 CPU cores with integrated WiFi and dual-mode bluetooth.
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ESP32C6 + PN532 NFC Reader (HW-147C) SPI Communication Not Working - "Didn't find PN53x board" [closed]
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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ESP32 LEDC "hpoint" - Parameter
When using the ESP-IDF, there are the LEDC-drivers. Basically, you initialize a timer and a channel, so a matching PWM for your LED is the result.
ledc_channel_config_t.hpoint
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A fatal error occurred: Failed to connect to ESP32-S2: Wrong boot mode detected (0x13)! The chip needs to be in download mode [closed]
This error is presenting in Windows 11 because I run this device in PC with Windows 10.
How to resolve this issue?
A fatal error occurred: Failed to connect to ESP32-S2: Wrong boot mode detected (...
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Why does Serial.write() work but Serial.print() doesn't?
I am testing my GPS module with an ESP32 using the Arduino IDE. I'm asking because I usually don't fully understand the difference between Serial.write() and Serial.print().
This code is working ...
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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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ESP32 struggling to trigger relay module consistently
I'm working with a 4-channel, 5 V relay module and an ESP32 which operates on 3.3 V.
The setup seemed to work well initially but I have started experiencing some inconsistencies. One of the four ...
CommunityBot
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Converting ESP32 SPI code to Arduino for MAX6921 IV-18 driver board
I purchased a IV-18 VFD tube driver module, which came with some example code for an ESP32 board. The driver module has a 20 output MAX6921 serial chip to drive the vacuum tube. I want to use this ...
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Can I make this changes to this diagram of a ESP32-CAM?
I am kind of new with electronics circuits, and therefore I have some doubts about this diagram of a ESP32-CAM.
I want to use 5V supply instead of 3.3V. Do I need to add some resistors or capacitors ...
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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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How to adapt this ESP32 + TMC2240 stepper controller design to my project?
I’m trying to build a wireless stepper motor controller using an ESP32 with a TMC2240 driver. I came across this reference design: Wireless Stepper Motor Controller with ESP32 and TMC2240 https://www....
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Impossible to install the esp_camera library
I cannot install the esp_camera library. When I try to add the .zip, I get "does not contain a valid library.
Everything about this ESP-32 Cam seems to rely on that library, and I can't find a ...
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AT command validation does not appear on the serial monitor
I can't validate an AT command. Would anyone have any suggestions as to what I might be doing wrong? It should be printing "Sending successful! or "Sending failed!", but it doesn't show ...
CommunityBot
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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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Is std::string (and ephemeral memory allocation in general) safe to use for ESP32 Arduino?
I know that with 8-bit AVR Arduinos, std::string is widely regarded as fundamentally unsafe due to problems with heap-fragmentation (partly due to limited ram, and partly because the WAY the ...
CommunityBot
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Obtaining wrong analog readings using the ESP32 devkitc v4
I know that the topic is not related to Arduino, but I am completely sure that someone can help me find the problem.
I am testing 6 temperature sensors, (3 digital, 3 analog). The digital ones are &...
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