Install CH34X Driver on Windows and Mac
The CH34X family comprises widely used USB‑to‑serial chips manufactured by WCH (WinChipHead), commonly integrated into generic UNO R3, ESP8266, and ESP32 development boards.
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Install CH34X Driver on Windows and Mac
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ESP32 OTA using PlatformIO
Overview Over-the-Air (OTA) programming allows for updating the ESP32 microcontroller wirelessly, eliminating the need for a USB connection. OTA updates are particularly useful when physical access to the ESP32 module...
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Troubleshooting - Liquid Crystal LCD with I2C Backpack
After wiring the LCD, you will need to adjust the contrast by using the potentiometer located on the I2C module.
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What is MQTT?
What is MQTT? MQTT is a lightweight open-source messaging network protocol that transports messages between devices. It employs a publish/subscribe communication model to provide resource-constrained network clients with a simple...
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MQTT Persistent Session and Queuing Messages
In MQTT , a persistent session refers to a feature that allows a subscribing client to maintain its session state and subscriptions with the MQTT broker. It ensures that the subscribing client...
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MQTT Last Will and Testament
In practical applications, combining the Last Will and Testament (LWT) feature with retained messages can be a powerful method for monitoring the online and offline status of devices. Later in...
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MQTT Quality of Service (QoS)
MQTT supports different levels of message delivery assurance. There are three QoS levels: QoS 0 (at most once), QoS 1 (at least once), and QoS 2 (exactly once). The QoS...
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Free Lonely Binary Public MQTT Server
Imagine an MQTT Server as the beating heart of the MQTT Publish/Subscribe protocol, tirelessly receiving messages from MQTT clients and skillfully delivering them to the deserving subscribing clients. It's like...
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I2S Inter-Integrated Circuit Sound
What is I2S? The I2S (Inter-Integrated Circuit Sound) protocol is a serial communication protocol commonly used for transmitting digital audio data between integrated circuits (ICs) in audio systems. It was...
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Static, Heap and Stack
STATIC MEMORY Static memory persists throughout the entire life of the program, and is usually used to store things like global variables, or variables created with the static clause. Global variables...
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Latching and Momentary switches
One of the most elementary and easy-to-overlook circuit component is the switch. There are two types of switches: Latching switches and momentary switches.They operate in different ways and therefore suit...
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Installing the ESP32 Board in Arduino IDE
The ESP32 community created an add-on for the Arduino IDE that allows you to program the ESP32 using the Arduino IDE and its programming language. This tutorial shows how to...
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Installing ESP8266 Board in Arduino IDE
The ESP8266 community created an add-on for the Arduino IDE that allows you to program the ESP8266 using the Arduino IDE and its programming language.This tutorial shows how to install...
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Installing Additional Arduino Libraries
Once you are comfortable with the Arduino software and using the built-in functions, you may want to extend the ability of your Arduino with additional libraries. What are Libraries? Libraries...
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