Reading Futaba PPM

Projects Programming
1

Hi All,

Rookie here.
I'm trying to read PPM signals from a Hitec or Futaba TX via the PPM pin, then display it through the serial port, channel by channel, then visually display it in a .net application. It works like a charm, but my issue is that the numbers coming off either TX (Hitex/Futaba) the numbers are always "twitching", not consistent.

#define channumber 9 
int value[channumber];

void setup()
{
Serial.begin(115200); 
pinMode(2, INPUT); 
}
void loop()
{
while(pulseIn(2, LOW) < 5000){} 
for(int x=0; x<=channumber-1; x++)
{
value[x]=pulseIn(2, LOW);
}
for(int x=0; x<=channumber-1; x++)
{
 Serial.print("|");
Serial.print(value[x]);

value[x]=0; 
}
Serial.println(" "); 
}

Is there a way to somehow filter it so the numbers remain more consistent? It is a bit of an issue because I'm trying to send the numbers through an RF module to another arduino which in turn translates the numbers into servo commands, but because of this, the servos are always moving, or humming a bit.

Thanx

2

I'm trying to read PPM signals from a Hitec or Futaba TX via the PPM pin

The PPM pin? Which pin would that be?

Is there a way to somehow filter it so the numbers remain more consistent? It is a bit of an issue because I'm trying to send the numbers through an RF module to another arduino which in turn translates the numbers into servo commands, but because of this, the servos are always moving, or humming a bit.

You might need to keep track of the last value sent/received, and only send a new value when the data changes significantly (where you define what is significant).

3

Here's a video link to what I mean