Hey all,
I'm planning to use a pololu driver to drive a linear actuator based on an analog input with the schematic shown in the attachments. When the analog input reaches above a threshold value, the actuator extends; else it retracts.
The code I used to test the actuator is as follow:
void setup(void)
{
Serial.begin(9600);
pinMode(13, LOW); /*IN 1 on digital pin 13*/
pinMode(12, HIGH); /*IN 2 on digital pin 12*/
pinMode(A0, INPUT); /*Potentiometer input*/
pinMode(11, OUTPUT); /*INV on digital pin 11*/
}
double pot;
void loop(void)
{
pot = analogRead(A0);
if(pot > 300)
{
digitalWrite(11, HIGH);
Serial.print("Moving.");
Serial.print("\n");
}
else
digitalWrite(11, LOW);
delay(1000);
}
Quick summary:
based on the information given on Pololu's website, IN1 and IN 2 on the board are defaulted to HIGH. Hence I've declared and set one to be HIGH and the other LOW in setup. the INV pin is defaulted to LOW and if assigned to HIGH, it inverts the input of IN1 and IN 2.
MC33926 specs: http://www.pololu.com/catalog/product/1212
Last time I did this, I fried my serial to USB interface because I think I'm missing a few 1kohm resistors to protect my board. (TX & RX lights are now both on permanently.) Hence, before going on any further, I'd like to consult on this forum on the proper procedures before further testing.
I currently don't have pictures of the physical circuit with me, pictures will come in a bit.
Thanks in advance.
B.
