I was tasked in creating EC (electrical-conductivity) measurement system to be use in fertigation system. Basically the EC meter will measure fertilizer content in water by measuring its EC value. If the ec reading rise or drop beyond certain level, water pump will be automatically switch on to add more water or fertilizer solutions. Things is, i don't know heads or tail about micro controller.
Yes i already look it. It show sample code and arduino type: "Duemilanove" which i cannot find in product section of Arduino website.
That download section only explain how to maked the circuit communicate with Arduino. Now how to connect to pump. I suppose it is not as simple as plug any wire from pump to any Arduino board output
The Arduino Uno board has replaced the Duemilanove. The 'Uno' is also the easiest board to start with.
The example sketch uses the SoftwareSerial library. That library is part of the standard Arduino software, so you don't have to install something.
You need a relay or transistor or mosfet or SSR (solid state relay) to drive a pump.
What kind of pump is it ? (what voltage, what is the maximum current, a link to the pump perhaps)
Do you have a power supply for the Arduino board ?
You probably will need a way to measure how much fluid is in the tank to determine how much water/fertiliser you need to get the right EC. Safety may be another issue, when the EC is too high and you're tank is almost full, adding water might flood the floor.
Erdin:
The Arduino Uno board has replaced the Duemilanove. The 'Uno' is also the easiest board to start with.
The example sketch uses the SoftwareSerial library. That library is part of the standard Arduino software, so you don't have to install something.
You need a relay or transistor or mosfet or SSR (solid state relay) to drive a pump.
What kind of pump is it ? (what voltage, what is the maximum current, a link to the pump perhaps)
Do you have a power supply for the Arduino board ?
about the pump, i don't know exactly the rate. I'm guessing its 1hp ac pump because that usually use on the farm that i'm working on. I need to discuss that further with my lecturer.
Ah yes, about the power, i'm required to power the board and ec meter with solar system. So i guess i need solar panel, charge controller and batteris right?
Simpson_Jr:
You probably will need a way to measure how much fluid is in the tank to determine how much water/fertiliser you need to get the right EC. Safety may be another issue, when the EC is too high and you're tank is almost full, adding water might flood the floor.