Arduino Digital Read

[scardoso.rj]

Hi i try use the sensor of temperature/humidity sht15 with the arduino R3 UNO, i make a VI for this:

i dont undertand much of eletronic! I so have "zero" of sensor exit, in the sensor have the SCK "clock" i have some problens for use this with the labview, i try use the PWM pallete but i dont understand how use this...

Have some one help me? i need read the sensor...

thanks

[Kristoff2]

I took a quick look at this sensor.  It uses a non standard communication method but it might potentially work with SPI (ignoring the CS pin) if the correct mode is chosen, so you should do a bit of research to see if you can use SPI to talk to the sensor.  If you can use SPI you can use the LIFA SPI VIs.  If not you may want to implment the communication in the LIFA firmware and add custom commands to retrieve the data.  Using the digital read / write commands from LabVIEW will be pretty slow if you have to send 8+ commands to get a single byte back.

The actual commands to send to the device can be found in the sensor data sheet.  See section 2 Interface Specifications

Good luck, let us know if you get it working.

-Sam K

LIFA Developer