Discrete output forth and back

Lynxmotion Electronics & Software
1

Hi,

I want my servo to move using discrete outputs, so using arduino, I write a void loop that does
“#0L”
“#0H”
and this makes the servo move as I am pushing a botton.

I want it to go in the opposite direction, but
“#0H”
“#0L”
is not doing the trick.

Any idea on how I can accomplish this?

Viv

2

You will need to provide more about your code if you want us to be able to provide any meaningful help. So far, it seems that you might have a mistake on you code but we cannot tell what it is.

3

I’m not sure what in the code might be wrong but here is the code that I’ve been using. The servo moves “forward” in both cases. I am using arduino uno.

void setup() {
Serial.begin(9600);
}

void loop() {
if (Serial.available() > 0) {
incomingByte = Serial.read();

// Grip in
if (incomingByte == controls[0]) {
gripIn();
}

// Grip Out
if (incomingByte == controls[1]) {
gripOut();
}
delay(100);
}
}

void gripIn(){
Serial.println("#0L");
Serial.println("#0H");
}

void gripOut(){
Serial.println("#0H");
Serial.println("#0L");
}

4

just looking at your code I’d suspect the only reason your servo moves is that it is not getting an appropriate control signal. looks like you are just bit-banging the servo.

5

I’m following the manual for the controller. How else would I be able to do what I want?

Viv

6

If you are referring to the ssc-32 manual, it says to send the ssc-32 commands in the form of characters that represent various parts of the ssc-32 command set. Not sure you understand how a servo works. If you are using an arduino, you can send the ssc-32 servo commands from the serial monitor to the arduino, and the arduino sends the commands to the ssc-32 using simple test code like below.

// zoomkat 7-30-11 serial I/O string test
// type a string in serial monitor. then send or enter
// for IDE 0019 and later

String readString;

void setup() {
  Serial.begin(9600);
  Serial.println("serial test 0021"); // so I can keep track of what is loaded
}

void loop() {

  while (Serial.available()) {
    delay(2);  //delay to allow byte to arrive in input buffer
    char c = Serial.read();
    readString += c;
  }

  if (readString.length() >0) {
    Serial.println(readString);

    readString="";
  } 
}