rubenhak

Shadi, The trouble is that I'm not getting any interrupt on a echo port.

Still didn't work. If I use PIN4 it gets stuck in while (lineState == false). If I connect it to PIN5 it gets stuck in while(lineState).

Also when I connect it to PIN13 every time the port Writes(true) or false, it turnes on or off netduinos blue LED. 

What am i doing wrong?

Thanks,

Ruben

        private int GetDistance()        {            // First we need to pulse the port from high to low.            _port.Active = true; // Put port in write mode            _port.Write(true);   // Pulse pin            _port.Write(false);            _port.Active = false;// Put port in read mode;                bool lineState = false;            // Wait for the line to go high, for start of pulse.            while (lineState == false)                lineState = _port.Read();            long startOfPulseAt = System.DateTime.Now.Ticks;      // Save start ticks.            // Wait for line to go low.            while (lineState)                lineState = _port.Read();            long endOfPulse = System.DateTime.Now.Ticks;          // Save end ticks.             int ticks = (int)(endOfPulse - startOfPulseAt);            return ticks / 580;        }

adsf

I modified the code from here,

http://forums.netdui...asures-jumping/

 

and the files are here for Netduino Plus 2 (in VB),

https://www.dropbox....0a7Geue?v=0mwng

 

The cheap HC-SR04 modules are spotty at best. I wasted a lot of time with a bad one. The above code works just fine. I merely added some smoothing routines. The module is powered from the Netduino 5V pin.

Thank you, I will try to use and see how it works.

Are there any limitations on the pins which I can use?

Guys, I ran into a same issue. 

I might try to burn tow ports at this point. Could you please share the code for this?

Thanks,

Ruben

I prefer to use separate supplies for logic and motors.

My Netduino became erratic when it shared the same battery pack as my buggy's motors.

 

Paul

Yeah, i felt that too..