Hi,
I am doing a project on a solar tower. I got two VTI-SCP1000 sensors. I would like to know whether I could read temp and pressure data from both sensors using the same arduino-uno controller as well as reading the wind speed data from the anemometer
regards,
deshan
From a brief reading of the datasheet, there are two version one for TWI (I2C) and one for SPI.
Which have you got?
(there appears to be only a single TWI address, so this option will be tricky if you want to put two into the same Arduino)
thanks awol,
I was going to use spi interface, cant u use spi interface to have two sensors? I decided to use spi as there r many codes online available where as TWI havent found any,how do u do this woth TWI.help pls!
You can use the PD pin on the TWI devices as a chip select and run two in parallel. I built a weather station that uses that part but so far I can't find the schematic and the sketch that I used. If I remember correctly you could also wire the SDA pins together and control the individual chips with separate SCL lines.
Check your connection against this drawing before you proceed with writing code.
Anemometer.tiff (50 KB)
How far apart are the sensors and the Arduino? SPI isn't really designed for long wiring runs, not sure about TWI.
Oh good, another poll. 