I changed the input spindle frequency to 200Hz and fixed the scaling.
The input frequency is given and not calculated as it wastes unnecessary
time. It works very well now. I will use a fast opto coupler to drive
the power source and hopefully I have a solution.
#define MainPeriod 50 // measurement frame duration, milliseconds
#define pulseInput 2 // input pin for pulseIn
#define pulseOutput 4
long previousMillis = 0;
unsigned long duration = 0; // receive pulse width
unsigned long outDuration = 0;
long pulsecount = 0;
long dc = 0;
float Freq = 0.2e3;
float T = 1 / Freq;
void setup()
{
pinMode(pulseInput, INPUT);
Serial.begin(19200);
pinMode(ledPin, OUTPUT);
analogWriteFrequency(4, 40000); //set the pwm frequency = 25usec
analogWriteResolution(10); // use the highest resolution
}
void loop()
{
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= MainPeriod)
{
previousMillis = currentMillis;
dc = (duration / 5e-3)/1000;
dc = dc / 100;
outDuration = (dc * 1024)/100;
analogWrite(pulseOutput, outDuration);
// write current time and F values to the serial port
// not implimented for production but handy to see the frequencies
//Serial.print(currentMillis);
//Serial.print(" "); // separator!
/*Serial.print(dc);
Serial.print(" ");
Serial.print(pulsecount);
Serial.print(" ");
Serial.print(duration);
Serial.print(" ");
Serial.println(outDuration);*/
duration = 0;
pulsecount = 0;
}
// instead of single measurement per cycle - accumulate and average
duration += pulseIn(pulseInput, HIGH, MainPeriod * 900);
pulsecount++;
}
>On 25.08.15 14:27, Marius Liebenberg wrote:
>> Erik
>> I am getting to old to be a purist any more. I always use the
>>platform
>> or chip with the best or most intuitive dev environment.
>> Short piece of code using a Teensy 3.0. I use the Visual Micro
>>debugger
>> in Microsoft Visual Studio 2015 all running on the latest Arduino
>> environment.
>
><Chuckle>. Marius, I've feared I'm too old to learn the newfangled
>Arduino environment, so I'm thrilled to see how you've leveraged it.
>The speed of getting it going is very impressive. I should take a
>closer
>look at the environment - I think I've seen somewhere that it can be
>used with the gnu toolchain.
>
>Erik
>
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