---

🏎️ Gesture-Controlled Robotic Car with ESP-NOW

A wireless, gesture-controlled robotic car built with ESP8266 (NodeMCU) microcontrollers. The system uses a glove-mounted MPU6050 accelerometer to translate hand movements into driving commands via the low-latency ESP-NOW protocol.

The car is equipped with advanced safety features, including an ultrasonic collision-avoidance system, a variable-speed proximity alarm, and a targeting laser that activates when the vehicle is parked.

✨ Features

• Gesture Steering: Control the car by tilting your hand (Forward, Reverse, Left, Right).
• ESP-NOW Communication: Ultra-fast, Wi-Fi-less direct communication between the glove and the car.
• Smart Collision Avoidance: An HC-SR04 ultrasonic sensor prevents the car from crashing into walls (auto-stops at <20cm).
• Variable-Speed Parking Sensor: A buzzer beeps faster as you get closer to an obstacle (active between 60cm and 20cm).
• Warning System: An LED flashes rapidly when in the "danger zone".

---

🛠️ Hardware Requirements

For the Glove (Transmitter):

• 1x ESP8266 NodeMCU
• 1x MPU6050 Accelerometer/Gyroscope Module
• Portable Power Source (Power bank or battery pack)
• A glove or wrist-strap

For the Car (Receiver):

• 1x ESP8266 NodeMCU
• 1x Robot Car Chassis Kit (with 2 or 4 DC Motors)
• 1x Motor Driver (e.g., L298N or L293D)
• 1x HC-SR04 Ultrasonic Sensor
• 1x Active Buzzer
• 1x LED (with 220Ω - 330Ω resistor)
• Battery Pack (e.g., 2-cell LiPo or 4x AA for motors/microcontroller)

---

🔌 Wiring & Pinouts

🧤 The Glove (Transmitter)

Component	Pin	NodeMCU Pin
MPU6050	VCC	3.3V
	GND	GND
	SCL	D1
	SDA	D2

🚗 The Car (Receiver)

Component	Pin	NodeMCU Pin
Motor Driver	IN1 (Left Fwd)	D7
	IN2 (Left Rev)	D0
	IN3 (Right Fwd)	D5
	IN4 (Right Rev)	D6
HC-SR04	VCC	VIN (Needs 5V)
	GND	GND
	TRIG	D1
	ECHO	D2
Buzzer	Positive (+)	D3
LED	Anode (+)	D8

(Note: Ensure the Car NodeMCU and the Motor Driver share a common Ground connection).

---

💻 Software Setup

Dependencies

You will need the Arduino IDE installed, along with the ESP8266 board definitions. You also need the following libraries:

• ESP8266WiFi (Built-in)
• espnow (Built-in)
• Wire (Built-in)
• MPU6050 (Install via Arduino Library Manager, usually by Electronic Cats or Jeff Rowberg)

1. Match the MAC Address

ESP-NOW requires the Transmitter to know the exact MAC address of the Receiver.

1. Upload a basic MAC Address finder sketch to your Car NodeMCU.
2. Open the Serial Monitor and copy the MAC address.
3. Open the Transmitter-NodeMCU.ino code and update this line with your specific address:

   uint8_t carMAC[] = {0x78, 0x1C, 0x3C, 0x8A, 0x75, 0xC0};

2. Upload the Code

• Connect the Glove NodeMCU and upload Transmitter-NodeMCU.ino.
• Connect the Car NodeMCU and upload Receiver-NodeMCU.ino.

---

🚀 How to Drive

1. Power on the Car, then power on the Glove.
2. Hold your hand completely flat (horizontal). The car will remain stationary .
3. Drive Forward: Tilt your hand forward.
4. Reverse: Tilt your hand backward.
5. Turn Left/Right: Roll your wrist to the left or right.
6. Safety Override: If you drive forward into a wall, the buzzer will start beeping at 60cm. At 20cm, the car will automatically cut the forward engines, the LED will flash, and the buzzer will sound a solid tone. You must tilt your hand backward to reverse out of the danger zone.