README.md

Arduino RC Car Project

Overview

This branch is for the EPICS Sumo-Bot Competition.

Setup Instructions

1. Pair the Bluetooth modules.
2. Upload SumoBot_BT_CAR_Code to the Arduino on your car.
3. Upload SumoBot_BT_Remote_Code to the Arduino in your remote control.
4. Connect the Slave HC-05 module to the Car Arduino.
5. Connect the Master HC-05 module to the Remote Arduino.

---

🔵 Bluetooth Instructions

📶 Bluetooth Pairing Instructions (If Not Paired)

1. Grab both HC-05 Bluetooth modules.
2. Label them as either M (Master) or S (Slave).
   • Alternative labels: T = Transmitter, R = Receiver
3. Connect the module to an Arduino running an empty sketch.
   • While connecting, hold down the small button on the bottom right of the HC-05.
   • After a few seconds, the module's LED should blink slowly — this indicates Command Mode.
   • Command Mode allows you to check/set configuration. You only need it for setup — not future use.
4. Open the Serial Monitor in the Arduino IDE.
   • Set baud rate to 38400
   • Set line ending to Both NL & CR
5. Type AT and press Enter. You should receive OK, confirming it's working properly.
6. Type AT+ROLE? to check the module's role:
   • 0 = Slave
   • 1 = Master
7. If both modules have the same role, change one typing AT+ROLE=#: Replace # with 1 (Master) or 0 (Slave).
8. Once roles are set, connect the Slave module again and type: AT+ADDR?, Copy the returned address
9. Connect the Master module and bind it to the Slave using:AT+BIND={Slave_Address}, Replace {Slave_Address} with the address you copied.

• Replace {Slave_Address} with the address you copied.
• IMPORTANT: Replace all colons (:) with commas (,).
  • Example: AB:CD:EF1234 → AB,CD,EF1234

10. If the above steps are completed correctly, your modules are now paired!

• From now on, they will automatically try to connect when powered on.

---

🔄 Bluetooth Connection Instructions (If Already Paired)

1. Connect a module to an Arduino running an empty sketch.

• While connecting, hold down the small button until the LED blinks slowly — this is Command Mode.

2. Open the Serial Monitor.

• Set baud rate to 38400
• Set line ending to Both NL & CR

3. Type AT and confirm you receive OK.
4. Type AT+ROLE? to verify the module's role.
5. Label each module appropriately:

• M = Master
• S = Slave
• (or use T = Transmitter, R = Receiver)

---

🖼️ Reference Images

Car Image:

Controller Interface: