Hello there!!
I'm working on a prototype for enviromental monitoring.
I bought the last Raspberry Pi and the last GertBoard; i connected them with a home made ribbon cable (already tested with digital multimeter).
I need to get some data from two different enviroments: air and water.
Air monitoring:
- Temperature (°C)
- Humidity (RH %)
Water monitoring:
- PH (PH)
- EC (micro/S)
For the temperature and the humidity i bought the DHT11, a cheap but accurate sensor that i'm pretty sure you already know something about it.. Uses a single-wire serial interface.
For the water, i bought the two sensors conneted to a little unit.
This little unit gives me out two separate isolated analog signals: 0 - 5 Vdc.
Unit Specs.
""
Model A1005 EC/pH Transmitter with isolated outputs.
EC Range: 0-5 EC or 0-5000micro/S . Error 2% .
pH Range: 0-14pH . Error .2%.
Outputs: EC 0-5vdc , pH 0-5vdc isolated.
Calibration: Trim pots for both EC and pH
""
Now the question: how should i connect all this parts together to get the best results?
Can you help me also to start writing the program?
I need to print the four values on the screen.
(maybe C is the best way, but if you have better suggestion i will be happy)
After this i will have to write some digital outputs, but i think it will be the easiest part..
Waiting answers.. Many thanks everybody for your help!
(I'm italian, sorry for my bad english!!!)
Federico
