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Is there a possibility to define a second "powerpin"

I am currently using two lines of water, one is a fresh water and the other one is from a pump.

In both cases I control which waterline is used by a solenoid valve.

Those solenoid valves I want to trigger.

Currently I have set the powerpin for all my valves to the pin of the fresh water valve.

When I want to use my pump, I need to switch it on either manually or change the "powerpin".

If I could define multiple powerpin's I would simply activate them all and turn those off I do not need (either via the "Home" website checkmark on the water line or later hopefully triggered by a sensor, telling me if the pump has enough water to use).

Any Idea ?

2 answers2 replies

4 Comments

Alex

Jun 17, 2020

yea the second line is a rain water tank. It has an automatic pump - it is always on and simply delivers water, when I open the valve. So no need for a relay to turn it on or something like that.

Basically the "Rain Tank" and the "Fresh Water" constantly delivers water.

The incoming valves are closed - depending which one of the water input lines I want to use, I will turn on one relay of the input line and one valve of the watering lines.

Currently I have defined, that every watering line valve triggers the valve of the fresh water input line (via the powerpin).

When I want to use the "rain tank" I basically turn off the fresh water line (either by shutting it off by hand or by turning it off in the "home" webpage and manually start the "rain tank" line (using the setting webpage).

Thinking about it, maybe I should just add my input lines both to my WateringPlan and turn them on together with my watering lines.

I still could then turn off whatever input line I do not want by overriding the wateringPlan on the "home" webpage

Lisa Price

Oct 14, 2020

Replying to

@Alex If the tank is lower than the pump you do not need a valve front and back of the pump, is tha tank higher than the pump than you should install a valve on both sides for repairs, etc. Your pump should be a 220v pressure pump with expansion tank and pressure switch. Two solenoid valves are needed, one for rainwater the other for aqueduct water. Two relays and a 50 cent logic gates. . The Gates you will find on the 74LS02 or on the SN54

TTL Logic IC wich is available on ebay for 1 Euro. It runs on 5v and draws micro amps, so you can just place the chip between the signal line and the relay. connect the sensor and signal to the pins you choose via the table on the datasheet and the output to the relay, done.

Alex

Oct 14, 2020

Replying to

@Lisa Price the pump is inside the tank. As you said it is using a pressure switch to recognize, as soon as water is needed. I never thought about solving the issue using a simple logic chip. Thanks for the hint - guess I have a new small project for winter time.

hydrosys4

Jun 17, 2020

Not sure I fully understood your setting, anyway is seems to me that adding a second powerpin will not provide a good solution either.

Are you running a rain water tank or a well? Your setting look like the one we are discussing in this post:

https://hydrosys4.wixsite.com/hydrosys4forum/forum/general-discussions/automatic-irrigation-with-water-tank