Keyestudio 4WD Bluetooth Multi-functional Car Manual page 80

keyestudio
unsigned char old_SL,old_SM,old_SR;
void loop()
{
Sensor_Scan();
if (SM == HIGH)// middle sensor in black area
{
if (SL == LOW & SR == HIGH) // black on left, white on right, turn left
{
turnR();
}
else if (SR == LOW & SL == HIGH) // white on left, black on right, turn right
{
turnL();
}
else // white on both sides, going forward
{
advance();
}
}
else // middle sensor on white area
{
if (SL== LOW & SR == HIGH)// black on left, white on right, turn left
{
turnR();
}
else if (SR == LOW & SL == HIGH) // white on left, black on right, turn right
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