ESP32 boat controlled by Wifi

Tutorial plan

1- Objective of building ESP32 robot boat

2- Required Components

3- Component Wiring

4- Micropython program for ESP32

Objective of building ESP32 robot boat

The objective of building an ESP32 robot boat controlled by Wi-Fi using a water pump, relay module, and servo motor is to develop a versatile, remotely controlled aquatic vehicle capable of performing a variety of tasks.

A. Initialization

1. Power-Up:
   • The ESP32 is powered on and initializes its components, including the Wi-Fi module, relay module, and servo motor.
   • If a web server or app is used, the ESP32 either:
     • Creates its own Wi-Fi hotspot for direct control.
     • Connects to an existing Wi-Fi network.

• ESP32 Microcontroller:
  • Acts as the central brain of the boat.
  • Manages all peripherals, including the water pump, relay module, and servo motor.
  • Hosts or connects to a Wi-Fi network, allowing control via a smartphone or computer.
• Water Pump:
  • Provides propulsion by expelling water through a nozzle.
  • Responsible for moving the boat forward or backward by changing the pump's orientation or water flow direction.
• Relay Module:
  • Controls the water pump by switching it on or off as per commands from the ESP32.
  • Acts as an intermediary between the ESP32 and the high-current motor of the water pump.
• Servo Motor:
  • Controls the steering by adjusting the rudder or the direction of the water pump nozzle.
  • Operates based on angle values sent by the ESP32, enabling precise directional control.
• Power Supply:
  • Provides adequate power for the ESP32, water pump, servo motor, and relay module.
  • Typically uses a battery pack with appropriate voltage (e.g., 7.4V or 12V, depending on the components).