Controlling fluid flow with ball valve and flow control using arduino

Projects General Guidance
1

Hallo,

I am pondering on a project to do the following :

I want to control fluid rate using a ball valve and servo/stepper motor
I have a flow rate sensor that can give me a flow value.
I want to use a 1602 keypad LCD shield to be able to specify the rate of flow, and the valve will keep it there.

I need to dose my water system with chemicals at a specific rate and as the tank gets empty the rate needs to be able to be adjusted by the stepper/servo/ball valve to keep to the specified lt/hour rate.

Please can somebody assist in the coding to make this work.

I have the following hardware :

Arduino Uno R3
1602 keypad lcd shield
stepper motor
stepper motor controller
flow rate sensor 0-30lt/min

I can hook al these together on instruction but i battle to figure out the code.

Thanks,
G

2

Break your project down into steps - get the lcd working , then move on .

People here will help with specifics if you get stuck, so have a go and post here .

3

Your flow rate sensor may be linear, but your ball valve is anything but LINEAR! Best to design some way to coordinate flow with valve open position.
Paul

4

hammy:
Break your project down into steps - get the lcd working , then move on .

People here will help with specifics if you get stuck, so have a go and post here .

Hallo Hammy,
To be honest, i have no clue. I got code to make a normal 1602 lcd display a value from the flow sensor. but i have no idea how to begin to get the 1602 keypad shield going and reading my flow sensor.
maybe you can point me in the right direction please.

5

The lcd display has a library for its use, add that and look at the example sketches that come with it.

6

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