Adeept Hexapod kit ADA033, thirteenth servo will not attach

Just an aside, how did you get the code snippet to format so nice, I tried the source widget {;} and it was a mess.

All the legs servos move, claw in/out then pivot forward/back. Even in the setup() function the head servo does not initialize to 90 degrees. Unfortunately, the Adeept forums and support are very unresponsive. Many questions asked, few replies. I've successfully written code just for the head servo. The botHead_Sweep() function works fine for just the head. Is there a limitation to the number of servos per timer? From what I can understand reading the servo.h file, I don't see a limitation.

Posted by: @zander

how did you get the code snippet to format so nice

I clicked the code <> link, and a window pops up where you can past your code. After you add your reply, the code appears in a nice, blue box. 😉

I had to write separate functions for the legs on the right and left because the servos are mirrored on each side. That way, they all run the same out/in, back/forward pattern. 

@zoolandermicro Your code is in error I think, you will never take the else botheadsweep as the loop will terminate at i<13 and the middle else is still being taken at i<13.

@zoolandermicro My test mangled the code.

In the loop() function, I changed the for() loop to allow it to count up to 13. Still no joy 🙁 

for (int index = 0; index <= servoData; index++) {

@Ron, here is the current loop() function. 

void loop() {
  for (int index = 0; index <= servoData; index++) {
    if (index <= 5) {                          //Move servos on left side
      move_Servo_L(index);
    }
    else if (index > 5 && index < servoData) { //Move servos on right side
      move_Servo_R(index);
    }
    else {
      botHead_Sweep(); //Move head servo
    }
  }
}

Ok, changed it again. The idea is to write to servos 0 through 5 (left side) and 6 through 11 (right side) and servo 12 is the head. After failing the if() and the else if() tests, the code is supposed to be true for the else clause. I hate the 'magic numbers' thing, but sometimes it makes it easier to read. Just uploaded the code, but the head servo still doesn't move.

void loop() {
  for (int index = 0; index <= servoData; index++) {
    if (index <= 5) {                          //Move servos on left side
      move_Servo_L(index);
    }
    else if (index > 5 && index < 12) { //Move servos on right side
      move_Servo_R(index);
    }
    else {
      botHead_Sweep(); //Move head servo
    }
  }
}

The Arduino IDE has an Auto Format function that make the code look nice. I just copied and pasted into the code box. I haven't tried copy/paste from Notepad++ (should work). 

@zoolandermicro You are making some rookie errors here.

The code super simplified is 

for 0 to 12

do L for 0 to 5

do R for 6 to 11

do head for 12

Another way to think of it is you have 6 lefts, 6 rights, 1 head for a total of 13.

Your original code was one too far on the R, it should have been this leaves array(ServoData) for the head.

Sorry if that was long winded or not clear, but as someone brought up on hardware, micro-code, machne code, assembler, dozens of high level languages, numerous OS's, then finally applications, I have no trouble moving between 0 based nomenclature (actually how the low level stuff works) and 1 based (inefficient)

There are actually special hardware bits to sense empty (all o) registers, words, memory locations.

 else if (index > 5 && index < servoData) { //Move servos on right side

@zoolandermicro It was the standard supplied blink sketch, already formatted. I will include it here again and see what happens

[code] /* Blink Turns an LED on for one second, then off for one second, repeatedly. Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is connected to on your Arduino model, check the Technical Specs of your board at: https://www.arduino.cc/en/Main/Products modified 8 May 2014 by Scott Fitzgerald modified 2 Sep 2016 by Arturo Guadalupi modified 8 Sep 2016 by Colby Newman This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink */ // the setup function runs once when you press reset or power the board void setup() { // initialize digital pin LED_BUILTIN as an output. pinMode(LED_BUILTIN, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second } [/code]

The thirteenth servo controlling the Hexapod head works with this code:

/*
 * BotHeadSweep sketch tests the thirteenth servo
 * controlling the head of the Hexapod 
 */
#include 
const int MIN_ANGLE = 20;  //Minimum sweep angle of bot head
const int MAX_ANGLE = 160; //Maximum sweep angle of bot head
Servo botHead;//create servo object to control a servo
void setup() {
  botHead.attach(14);//attachs the servo on pin D14 of Pixie board
  botHead.write(90);//back to 90 degrees
  delay(1000);//wait for a second
}

void loop() {
  static int sweep = 90; //initialize bot head to 90 degrees
  while (sweep < MAX_ANGLE) {
    botHead.write(sweep);
    sweep = sweep + 2;
    delay(10); //wait
  }
  while (sweep > MIN_ANGLE) {
    botHead.write(sweep);
    sweep = sweep - 2;
    delay(10); //wait
  }
}

The servo.h file has this note:

 Note that analogWrite of PWM on pins associated with the timer are 
  disabled when the first servo is attached.
  Timers are seized as needed in groups of 12 servos - 24 servos use two 
  timers, 48 servos will use four.
  The sequence used to seize timers is defined in timers.h