Arduino UDP Servo Controller - UNTESTED

How It Works

1. Wi-Fi Setup:

   • The ESP32/ESP8266 connects to a specified Wi-Fi network using the provided SSID and password.
   • Once connected, it prints the local IP address to the serial monitor.

2. Servo Initialization:

   • The servos are attached to their designated GPIO pins.
   • Each servo has predefined angle limits to prevent excessive movement.

3. UDP Listener:

   • The ESP32/ESP8266 continuously listens for incoming UDP packets on port 8888.
   • When a packet is received, the command is extracted and printed to the serial monitor.

4. Packet Parsing:

   • The received command string (e.g., "B30 P-20 T10 M60") is split into individual commands.
   • Each command consists of a servo identifier (B, P, T, M) followed by a numerical angle.
   • The numerical angle is constrained within the allowed range for each servo.

5. Servo Movement:

   • The mapped servo position is sent to the corresponding servo.
   • If the requested angle is outside the allowed range, it is clamped, and a warning is printed.
   • The servos move smoothly to their new positions.

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UDP Communication Overview

What is UDP?

UDP (User Datagram Protocol) is a lightweight, connectionless communication protocol used for fast data transmission. Unlike TCP, it does not establish a connection before sending data, making it ideal for real-time applications like servo control.

Why Use UDP?

• Low Latency: Ideal for fast and real-time control.
• Lightweight: No need for handshaking, reducing communication overhead.
• Stateless: Can receive commands from multiple sources without maintaining a session.

How UDP Works in This Code

1. The ESP32/ESP8266 binds to UDP port 8888.
2. It waits for incoming data packets.
3. When a packet arrives, it extracts and decodes the servo commands.
4. It then adjusts the servo positions accordingly.

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Required Components

Component	Description
ESP32/ESP8266	Microcontroller with Wi-Fi capability to receive UDP commands.
Wi-Fi Network	Required for UDP communication between the sender and ESP32/ESP8266.
Servos (x4)	Connected to GPIO pins to be controlled via UDP.
5V Power Supply	Required to power the servos, as the ESP32 cannot directly provide enough current.
Jumper Wires	Used to connect servos to the ESP32/ESP8266.

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This setup allows you to remotely control servos over a network using simple UDP packets. 🚀