Jittery servos in my Kitty Candy Cannon

hi!
first off, first arduino project , i'm in on head electronics , use help.

the basic functions in candy cannon randomize horizontal , vertical position, reload cannon , fire cat candy

the components are:

• arduino uno
• velleman motor & power-shield
• breadboard power supply shield (5v/3.3v)
• lego power functions m-motor
• lego battery box (9v)
• 2 x 800g micro servos
• 1 x 4,1kg futaba servo
• 1 x adafruit neopixel ring (24 diodes)

the positioning, firing , reloading works servos jitter crazy i'm suspecting wiring messed somewhere.
i tried make fritzing sketech of i've got. left battery , motor lego motor , battery box:



and looks like:



the thing annoys me right i've got 3 power sources. usb arduino, lego pack motor , 9v battery breadboard. there way down 1 or two?

so in conlusion problems twitching servos , many power sources. epriciate help!

and here's code:

code: [select]

#include <adafruit_neopixel.h>
#include <button.h>
#include <servo.h>

unsigned int buttonpin = 13;

unsigned int verticalservopin = 6;
unsigned int horizontalservopin = 5;
unsigned int reloadservopin = 9;

const byte neopixelpin = 10;
const byte neopixelcount = 24;
const byte neopixelbrightness = 100;

unsigned int motorpwm = 3;  //pwm control motor output
unsigned int motordirection = 2;  //direction control motor output

button startstop(buttonpin);

servo horizontal;
servo vertical;
servo reload;

adafruit_neopixel neopixelring = adafruit_neopixel(neopixelcount, neopixelpin, neo_bgr);

void setup()
{
startstop.begin();

neopixelring.begin();
neopixelring.setbrightness(neopixelbrightness);
neopixelring.show();

vertical.attach(verticalservopin);
horizontal.attach(horizontalservopin);
reload.attach(reloadservopin);

pinmode(motorpwm, output);
pinmode(motordirection, output);

// set starting position cannon
resetposition();
}

void loop()
{
if (startstop.pressed())
{
repositionandfire();
}
}

void repositionandfire()
{
spinneopixelring();

reloadcannon();

moveservorandom(vertical);
moveservorandom(horizontal);

firecannon();
resetposition();
}

void resetposition()
{
moveservo(vertical, 180);
moveservo(horizontal, 90);
}

void reloadcannon()
{
moveservo(reload, 30);
moveservo(reload, 135);
}

void moveservorandom(servo servo)
{
unsigned int degree = random(0, 180);

moveservo(servo, degree);
}

void moveservo(servo servo, int position)
{
position = map(position, 0, 180, 20, 140);
servo.write(position);
delay(1500);
}

void firecannon()
{
// run motor pull spring , fire
digitalwrite(motordirection, low);
analogwrite(motorpwm, 255);

// approximately 1 revolution of trigger wheel
delay(2300);
analogwrite(motorpwm, 0);
}

void spinneopixelring()
{
for (int = 0; < neopixelcount; i++)
{
neopixelring.setpixelcolor(i, neopixelring.color(255, 0, 0));
neopixelring.show();
delay(42);
}

for (int = 0; < neopixelcount; i++)
{
neopixelring.setpixelcolor(i, neopixelring.color(0, 0, 0));
neopixelring.show();
delay(42);
}
}

/peter

quote

but servos jitter crazy i'm suspecting wiring messed somewhere.

it's more problem inadequate power supply servos. "breadboard power supply shield (5v/3.3v)" doesn't tell near enough. powering? how many amps capable of supplying? voltage servos want?

Arduino Forum > Using Arduino > Project Guidance > Jittery servos in my Kitty Candy Cannon

arduino