Arduino Pins: A Detailed Guide
Arduino boards come with various types of pins, each serving a different function. Understanding these pins is essential for working with sensors, motors, displays, and communication modules.
Switching Transistors
A switching transistor is a transistor used as an electronic switch to control high-power loads with low-power signals. It operates in two states: Switching transistors …
🔧 Schematic: Connecting a Relay with an External Power Source and Arduino
1️⃣ Components Needed 2️⃣ Schematic Diagram Here’s how to wire these components: Details of Connections: Additional Components: 3️⃣ Code Snippet for Arduino To control the …
Blinking LED (Astable Mode).
🔹 How It Works: In astable mode, the NE555 continuously switches between HIGH and LOW states, generating a square wave signal. This makes the LED …
Capacitors in Power Supply Filtering
Capacitors play a crucial role in power supply filtering by stabilizing voltage, reducing noise, and improving power quality. Let’s break it down step by step. …
Here’s the WebSockets version for smooth, real-time motor control via Wi-Fi. 🚀
🔹 Why Use WebSockets? 📌 1️⃣ Arduino R4 WiFi Code This sets up a WebSocket server on port 81 to control:✅ SG90 servo motor✅ 28BYJ-48 …
How to Connect AMS1117-3.3V Voltage Regulator
The AMS1117-3.3V is a linear voltage regulator that converts 5V to 3.3V, commonly used to power low-voltage components like ESP8266, sensors, and microcontrollers. 1. AMS1117-3.3V …
USB Type-C Pinout and Wiring Guide
USB Type-C is a 24-pin reversible connector that supports power delivery, data transfer, and video output. Below is a pinout diagram and explanation of key …
🔧 Building a Siren with Two NE555 Timers
Using two NE555 timers—one for generating a low-frequency modulation signal and the other for producing an audible tone—you can create a siren circuit with a sweeping frequency effect. This project is an excellent way to explore the versatility of the NE555 and the principles of frequency modulation.
🔧 How to Build a Siren with NE555
By configuring the NE555 in astable mode and adding a variable resistor or modulation circuit, you can create a dynamic siren sound. This project is a great example of how versatile the NE555 timer is and is perfect for learning about timing circuits and sound generation.