L9110 H-BRIDGE STEPPER MOTOR DUAL DC MOTOR DRIVER CONTROLLER BOARD

DESCRIPTION:

onboard two the L9110S motor control chip 
the module can simultaneously drive two DC motors or a 4-wire 2-phase stepper motor 
the module input voltage :2.5-12V 
the 800mA continuous current output capability per channel 

1. Low static work current 
2. Power supply voltage: DC2.5-12V 
3. Each channel has 800mA continuous current output 
4. Low saturation pressure drop 
5. TTL/CMOS output level compatible, can be connected directly to the CPU 
6. Output built-in clamping diode, apply to the perceptual load 
7. Control and drive integrate in IC 
8. Have pin high pressure protection function 
9. Working temperature: 0-80
10.Size:29.2(mm)x23(mm) 

Example:

#include<reg51.h> 
sbit MOTOR_A_1 = P0 ^ 0; 
sbit MOTOR_A_2 = P0 ^ 1; 
sbit MOTOR_B_1 = P0 ^ 2; 
sbit MOTOR_B_2 = P0 ^ 3; 
void delay(unsigned long cnt) 
{ 
while(cnt--); 
} 
void forward(void) 
{ 
MOTOR_A_1 = 1; 
MOTOR_A_2 = 0; 
MOTOR_B_1 = 1; 
MOTOR_B_2 = 0; 
} 

void backward(void) 
{ 
MOTOR_A_1 = 0; 
MOTOR_A_2 = 1; 
MOTOR_B_1 = 0; 
MOTOR_B_2 = 1; 
} 

void main(void) 
{ 
EX0 = 1; 
EX1 = 1; 
EA = 1; 
while(1) 
{ 
forward(); 
delay(30000); 
backward(); 
delay(30000); 
} 
}