This project is a Line Follower Robot using an ATmega2560 microcontroller. It features motor control, a reflective sensor array for line tracking, a fan controller, and voltage regulation.
- MCU: ATmega2560-16A
- 10x QRE1113GR reflective IR sensors
- 2x MX1508 motor drivers (H-bridge)
- MOSFET-based fan control (2N7002)
- Power via battery with 5V regulation (AMS1117)
- 6x status LEDs
- Standard AVR ISP programming header
- Custom-designed PCB
- Sensors connect to MCU ADC pins
- Motor drivers controlled via PWM
- Fan controlled via GPIO and MOSFET
- 16 MHz crystal oscillator with 22pF caps
- Power from battery regulated to 5V
| Component | Part | Description |
|---|---|---|
| Microcontroller | ATmega2560-16A | Main processing unit |
| Motor Driver | MX1508 | H-bridge for motor control |
| Sensor | QRE1113GR | IR reflective sensor |
| Regulator | AMS1117-5.0 | 5V linear regulator |
| MOSFET | 2N7002 | Fan switching control |
| Oscillator | 16 MHz + 22pF | Clock for MCU |
| LED | Generic Red LED | Status indicators |
| Fan | 5V Fan | Pin to floor |
| Feature | Pin (ATmega2560) |
|---|---|
| Motor A Control | PE4, PE5 |
| Motor B Control | PG5, PL7 |
| IR Sensors | PF0–PF9 |
| Fan Control | PD7 |
| LEDs | PA0–PA5 |
Two zones:
- Sensor array in a linear top arrangement for line detection.
- Bottom section contains MCU, drivers, power, and headers.
- Connect a battery to
+BATTinput. - Upload firmware using AVR ISP (J5).
- Place on track with visible black line.
- Adjust PID tuning in firmware for better tracking.
- KiCad for circuit & PCB design
- AVR-GCC or PlatformIO for firmware
- AVRDude for programming
/hardware
schematic.jpeg
pcb.png
/firmware
main.c / main.cpp
Makefile / platformio.ini
README.md
Created by Rmingon - Robotics Developer
