Which pulse width has my treadmill?

Other Hardware Motors, Mechanics, Power and CNC
1

Hello,

i am trying to get a treadmill motor working with an arduino board.
i know that i will have to modulate the pulse width so that the motor controller ( MC 2100 ) will receive a valid signal.
how can i find out at which pulse length the motor controller operates?

Greetings colocolo

2

Is this datasheet relevant (does the picture of the board match yours)? If so it explains the controller signals.

3

yes i have that sheet. but i need to know how long pulses are.
however, i tried this sketch:

int pin = 7;

unsigned long duration;

void setup()
{
pinMode(pin, INPUT);
Serial.begin(9600);
}

void loop()
{
duration = pulseIn(pin, HIGH);
Serial.println(duration);
}

it gave me values around 9300. does that mean that the motor controller pulses are 9,3 millisec long?

4

Probably :slight_smile: Seen this? http://forum.allaboutcircuits.com/showthread.php?t=51061

5

i tried this . doesnt work.
but i managed to find out some data. with this code: lordvon's stuff: Getting PWM frequency and duty cycle with Arduino

the serial port gave me 47.23 and 50.64 out. the values vary.

so the frequency is 50 Hz and duty cycle 47 %. that would correspond because i already received a 9,3 ms signal. so the period would be 20 ms.

Could this be correct?

6

Well you've got the motor driver - try it out? The various threads say different things, one is likely to be right I suspect.