What happens to the servo on PanStamp?

Question

Arduino

I'm having trouble with a PanStamp project https://github.com/panStamp/panstamp/wiki
I'm transmitting from one PanStamp device to another via radio, a continuous degree of rotation angle for sevo (from 0 to 180 degrees.) The servo twitches at the same time the video is visible https://yadi.sk/i/2ikGURLcfTGND
1) When I connect the servo directly to the potentiometer without radio communication, there is no such problem, it smoothly rotates by a given degree.
2) During data transfer with a connected servo, some left characters are visible on the serial port during twitching. When I turn off the server, these characters do not appear.
3) I checked 3 servos (all working) all have the same problem.
4) Noisy data from the potentiometer is excluded. I average them through the "Average" function before sending them to the receiver.
5) I made the harness for the voltage stabilizer for the servo with two 470 mfarad conduits
Transmitter code:

#define POT_PIN 0 // потенциометр
#define K 0.1     // коэфициэнт усреднения
 
#define RFCHANNEL        0       // Let's use channel 0
#define SYNCWORD1        0xB5    // Synchronization word, high byte
#define SYNCWORD0        0x47    // Synchronization word, low byte
#define SOURCE_ADDR      4       // Sender address
#define DESTINATION_ADDR 5       // Receiver address

  CCPACKET txPacket;    // Задаем объект txPacket
  int newX, oldX;       // Переменные для усреднения
  byte POT_NEW;         // Рабочее (усредненное) значение потенциометра

void setup()
{ 
//  panstamp.setHighTxPower (); // режим мах мощности 10 дБ
  panstamp.radio.setChannel(RFCHANNEL);
  panstamp.radio.setSyncWord(SYNCWORD1, SYNCWORD0);
  panstamp.radio.setDevAddress(SOURCE_ADDR);
  panstamp.radio.setCCregs();


  // Откючение адреса, устройство будет получать/отправлять на любое устройство
  panstamp.radio.disableAddressCheck();
}

void loop()
{
  txPacket.length = 2;  // Размер пакета
  Average(analogRead(POT_PIN));
//  txPacket.data[0] = DESTINATION_ADDR; // Первый байт данных должен быть адресом назначения
  txPacket.data[1] = POT_NEW;            // Передаем байту 1 переменную       
  panstamp.radio.sendData(txPacket);     // Посылаем пакет
}

byte Average(int x)                                     
{                                                                                                        
  newX=(x*K)+(oldX*(1.0-K));
  oldX = newX;
  POT_NEW=map(newX, 0, 1013, 0, 180);
  return POT_NEW;
}

Receiver code:

#include <Servo.h> 
#include <HardwareSerial.h>


#define RFCHANNEL 0 // Let's use channel 0
#define SYNCWORD1 0xB5 // Synchronization word, high byte
#define SYNCWORD0 0x47 // Synchronization word, low byte
#define SOURCE_ADDR 4 // Sender address
#define DESTINATION_ADDR 5 // Receiver address


int i;

int S_POS; // Позиция сервапривода
int S_PIN=9; // Серво пин
Servo myservo;


void rfPacketReceived(CCPACKET *packet) // функция приема данных
{ 
if (packet->length > 1)
{
// packet.data[0]; // Первый байт адрес устройства
  S_POS=packet->data[1]; // Данные с потенциометра
}
}

void setup()
{
// Инициализация приемника
panstamp.radio.setChannel(RFCHANNEL);
panstamp.radio.setSyncWord(SYNCWORD1, SYNCWORD0);
panstamp.radio.setDevAddress(SOURCE_ADDR);
panstamp.radio.setCCregs();

myservo.attach(S_PIN); // инициализация сервопривода
  Serial.begin(9600);

// Выключаем адресацию устройств, приемник будет принимать от любого устр
panstamp.radio.disableAddressCheck();

// Обратный вызов RF 
panstamp.setPacketRxCallback(rfPacketReceived);
}


void loop() {
myservo.write(S_POS);
Serial.println(S_POS);

}

Answer 1

observed a similar situation, in my case it turned out that the power supply to the servo was sinking and therefore there were problems