Keyestudio 4DOF Manual page 180

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//******************************************
// the upper arm will lift up
void RF()
{
pos2=pos2-1;
myservo2.write(pos2);
delay(5);
if(pos2<0)
{
pos2=0;
}
}
// the upper arm will go down
void rb()
{
pos2=pos2+1;
myservo2.write(pos2);
delay(5);
if(pos2>180)
{
pos2=180;
}
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