AsyncMQTT_ESP32

TinyML on ESP32: Create Your Micro Machine Learning Tool in Just a Few Steps!

by
TinyML on ESP32: Create Your Micro Machine Learning Tool in Just a Few Steps!

In recent years, artificial intelligence (AI) technology has developed rapidly; however, the high power consumption and cost associated with high-performance hardware have limited its application in edge devices. TinyML has emerged to bring the powerful capabilities of machine learning to resource-constrained microcontrollers, such as the ESP32. This article will take you deep into the tinyml-esp … Read more

Essential for Open Source DIY: The ESP32-BLE-Keyboard Library Turns Your ESP32 into a Bluetooth Keyboard

by
Essential for Open Source DIY: The ESP32-BLE-Keyboard Library Turns Your ESP32 into a Bluetooth Keyboard

Introduction The ESP32-BLE-Keyboard is a library that allows the ESP32 module to function as a Bluetooth keyboard, making it easy to develop using the Arduino IDE. With this library, users can input text into any Bluetooth-enabled device, such as smartphones, tablets, and computers, providing more DIY possibilities for users. Features 1. Fully Compatible with Arduino … Read more

Using the ESP32 MicroPython File System

by
Using the ESP32 MicroPython File System

1. Overview of the File System The MicroPython on ESP32 uses the FAT file system by default, stored in internal flash memory or on an external SD card. The main operations include file reading and writing, directory management, and retrieving file information. 2. Common APIs <span>os.listdir()</span>: List directory contents <span>os.mkdir(path)</span>: Create a directory <span>os.rmdir(path)</span>: Remove … Read more

Designing a Web Server Based on ESP-IDF for ESP32

by
Designing a Web Server Based on ESP-IDF for ESP32

1. Code The web server based on the ESP32 IDF framework includes WiFi connection, HTTP service, front-end interaction, and hardware control functions: #include <stdio.h> #include <string.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_system.h" #include "esp_wifi.h" #include "esp_event.h" #include "esp_log.h" #include "nvs_flash.h" #include "esp_http_server.h" #include "driver/gpio.h" #include "cJSON.h" // WiFi configuration #define WIFI_SSID "your_SSID" #define WIFI_PASS "your_PASSWORD" … Read more

ESP32 MicroPython UART Testing

by
ESP32 MicroPython UART Testing

1. Key Points of UART Hardware Resources and Configuration UART Resources of ESP32ESP32 supports 3 UART controllers (UART0, UART1, UART2), but actual availability is limited by pin conflicts: UART0: Default for REPL debugging (flashing and serial monitoring), using GPIO1 (TX), GPIO3 (RX) UART1: Some development boards connect to external Flash/SD cards (conflicts should be avoided), … Read more

ESP32 MicroPython WiFi Testing

by
ESP32 MicroPython WiFi Testing

Development Steps: Connection Process 2. Core Functions Station Mode (Connect to Router) AP Mode (Create Hotspot) Network Scanning HTTP Requests Socket Communication Test Code: 1. Connect to WiFi (Station Mode) import network import time # Configure WiFi SSID ="your_wifi_ssid" PASSWORD ="your_wifi_password" sta_if = network.WLAN(network.STA_IF) sta_if.active(True) if not sta_if.isconnected(): print("Connecting to WiFi…") sta_if.connect(SSID, PASSWORD) # Wait … Read more

ESP32 Development – Part 1 (Quickly Set Up ESP-IDF Development Environment Using VS Code)

by
ESP32 Development - Part 1 (Quickly Set Up ESP-IDF Development Environment Using VS Code)

Install the ESP-IDF Plugin Press the shortcut key ctrl+shift+p Type <span>esp-idf extension</span> and press Enter select ESP-IDF: Configure ESP-IDF Extension Wait for the configuration to complete in the bottom right corner Then click express Select the version starting with v (choose a stable version) Select the path to store the ESP-IDF source code and the … Read more

Comparison of PWM Output Functions between Arduino and ESP32 with XY-MC10 ESC Driving Example

by
Comparison of PWM Output Functions between Arduino and ESP32 with XY-MC10 ESC Driving Example

In this article, we will briefly compare the PWM output capabilities of Arduino and ESP32, and then use both to drive the same electronic speed controller (ESC). 1. PWM Output Function of Arduino In Arduino, we can use the analogWrite() function to output PWM signals. This function has two parameters: pin and duty cycle (0-255). … Read more

Pitfall of Pushing Video Stream Data via 4G Module with ESP32-CAM | Learning Notes on Falling into a Pit

by
Pitfall of Pushing Video Stream Data via 4G Module with ESP32-CAM | Learning Notes on Falling into a Pit

It has been nearly two weeks since I last wrote a record. Who knows what I have experienced during this time? With a somewhat heavy heart, I document a recent pitfall I fell into. The heaviness comes from the fact that this pitfall was caused by a very, extremely basic mistake, and such a basic … Read more

Basics of Embedded Programming | DHT11 Driver Code for ESP32 Based on ESP-IDF (C Language, C++ Language)

by
Basics of Embedded Programming | DHT11 Driver Code for ESP32 Based on ESP-IDF (C Language, C++ Language)

01Introduction: Let’s get straight to the point. 02Content 1. C Language Implementation #include <stdio.h> #include "driver/gpio.h" #include "freertos/FreeRTOS.h" #include "freertos/task.h" #define DHT11_GPIO 4 // Use GPIO4 #define DHT_TIMEOUT 10000 // 10μs timeout // Data storage structure typedef struct { int humidity; int temperature; bool checksum_ok; } dht11_data; // Initialize GPIO void dht11_init() { gpio_set_direction(DHT11_GPIO, GPIO_MODE_OUTPUT); … Read more