spcboog

Hi all,

 

I've been using my netduino 2 plus for a couple of months without issue but yesterday when I plugged in the usb cable there was no response. 

 

The device is not registering at all. The same ports/cables work fine with my older netduino plus so I don't think it's the computer/ports/cables. The PWR led lights up, but the blue led does not light up at all.

 

Any ideas? 

 

thanks

 

Hi all,

I have a sharp analog infrared sensor which I'm having problems with regarding the lower voltage values (corresponding with larger distances).

- sensor is powered from 5V netduino+ pin
- Vout connected to analog 1

The datasheet states 3.1V max for Vout so this is the code:

analog.SetRange(0, 3100);
for (int i = 0; i < 60; i++)
{
   Debug.Print(analog.Read());
   Thread.Sleep(500);
}            

When the distances are small, the voltages seem to correspond with the datasheet specified values (between 2 and 3V). However when the distances are larger, the voltage doesn't seem to drop as I would have expected. I'm not really seeing anything below 1.7V or so. I tried measuring the voltage between Gnd and Analog 1 using a multimeter and the values seem to be good (below 1V when I would expect it to be). Does anyone know why analog.Read would be giving me values that are higher than what the voltage actually is?

thanks

Hi all, Hopefully someone can shed some light on this: - Reading from an ITG3200 gyro via IC2 works fine by itself - As soon I starting using PWM to drive a motorshield the reads on the ITG3200 lock up (never return) The motorshield is externally powered. Thanks