Lecture

Motor Control

05 Oct 2024 • Richard Kuo

Introduction to Motor Driver ICs, and Motor Control, PWM signals.

Lithium-ion Battery

1P = 3.7V, 2P = 7.4V, 3P = 11.1V

18650 cell

3.7V x 11000mAh

LiPO battery cell

5V regulator (穩壓IC)

L7805CV (STMicro)

Pin Out

2N2222 (PNP Transistor)

Pin Out
Connections

Motor Driver

H-bridge Motor driving circuit (橋式直流馬達驅動電路)

L298

Pin Out

Connections: 4 GPIOs

Example Code RoboCar_L298.ino

#define IN1_PIN     5 // IN1 pin 
#define IN2_PIN     6 // IN2 pin 
#define IN3_PIN     7 // IN3 pin 
#define IN4_PIN     8 // IN4 pin 

void setup()
{
    Serial.begin(115200);
    // set 4 GPIOs to OUTPUT mode
    pinMode(IN1_PIN, OUTPUT);
    pinMode(IN2_PIN, OUTPUT);
    pinMode(IN3_PIN, OUTPUT);
    pinMode(IN4_PIN, OUTPUT);