Adapting Lora Water Tank Controller to My Farm

[John]

Good day Renzo

I have discussed with you before on a particular controller I need. I am willing to pay for your design. I am only a tinkerer with very limited programming and electronics expierence. I have build a few projects and fiddled with code but that is where my limit is.

My requirements for a farm is the following.
Solar pump (running on between 100v and 200v dc on solar panels Grunfoss is the make)
water tank 5000L (located approx up to 5km from pump)
no electricity only solar and batteries can be used.

Tank controller must notify pump controller when to turn on or off. (must switch High voltage DC on or off)
Tank Controller must use in tank pressure sensor

Both controller must use Lora for distance and low power
both controllers must utilise solar. (no night time running as pump only pumps on solar and has no batteries)
No displays or web interface needed as in africa most farms do not have internet at watering holes

I have tried to adapt your remote pump but I failed at that. Problem is power requirements from small solar panel and SSR for pump controller. startup when enough power is available as well as code

[Renzo Mischianti]

Hi John,
In my farm I using a small pump with high prevalence (70m),

and it work without problem with the 200w panel I add a charging regulator to send 12v-like specs

The flow is less than the home water tap, but on a sunny day, fill the 1000l tank.

If you follow the indication of the Tank project, you can connect the Master that have two voltage regulator and a batter input connector that can be powered directly from 12v.

The client has the panel input and a voltage regulator with a rechargeable lithium battery and after it functions It goes into deep sleep.

This system I think can cover your expectations.

Bye Renzo

[John]

thank you Renzo. All I need is 1 SSR to disconnect 100 to 200Volt DC, the relay will be a problem

can I modify your pcb to incorporate a SSR

[John]

If I may change pcb layout where can I download the gerber files

[Renzo Mischianti]

In the master, you have a Relay with 3 exit
NO (Normally open) – COM (Input) – NC (Normally close)
if you put in COM 100v you can use NO e NC to activate an external SSR.

I think It’s your need.

[John]

Thank you very much, I do not find any gerber files in the master.

[Renzo Mischianti]

Hi,
I share It on PCBWay, not directly Gerber but you can order from PCBWay at the cost of the PCB.
Bye Renzo

[Author]

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