Analog input support

[karolis]

Hi,

Since I have a bit of experience with rpi, I am considering to buy the ospi version of open sprinkler.

I have read somewhere that there may be difficulties reading analog sensor data on the pi version compared to the arduino opensprinkler. Is this true? I would like the sprinkler to operate depending on the soil moisture / humidity sensor data and I don’t have a problem to write my own software for this. Does the ospi hardware support this?

 

Here is the sensor that I have in mind:

http://www.vegetronix.com/Products/VH400/

 

And I would also like to read temperature sensor some time in future and create some RRD graphs…

 

Wondering if ospi is the right choice for this.

 

thanks,

Karolis

[Ray]

OSPi has an on-board 4-channel ADC (PCF8591) that you can use to read analog sensor values. Although the firmware doesn’t have built-in support to read the ADC, there are plenty of C++, Python, or command line script code you can find to read the ADC. For details, check the OSPi user manual page 7:
http://rayshobby.net/docs/ospi14_manual.pdf

[karolis]

Thanks, ordered one, will see how it goes 🙂

[Author]

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