Relay module wiring with step-down converter and water sensor

Customer:

I’m asking about the relay module with sensor we discussed earlier.

Original message (Croatian)

Javljam se u vezi onog releja sa sondom sto smo pricali maloprije

Originally submitted via email support on 25 October 2017. Migrated to the forum for community visibility.

Soldered Support:

You’ll need:

Original message (Croatian)

ispričavam se na kašnjenju. U prilogu je slika.

Još Vam treba:
Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics
Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics
Step-down modul s LM2596S – Soldered Electronics
te naravno žica

Attachment omitted in migration: 20171026_124615.jpg

Customer:

So I connect the step-down converter to the output of the relay? That’s a bit unclear to me.

Original message (Croatian)

Znaci step down spajam na izlazu iz releja ili? To mi je malo mutno

Soldered Support:

You need to supply power to the relay module first:

  • Connect the 5V output from the step-down converter as power to the relay module (you’ll see the markings VDD and VCC)
  • Use that same 5V to power the water sensor
Original message (Croatian)

Morate dati napajanje modulu za relej, pa:
tih 5V spajate kao napajanje za modul s relejom(vidjet ćete oznake VDD i VCC)
tih 5V koristite kao napajanje senzoru za vodu

Customer:

So the step-down converter goes directly to the sensor module?

Do you have any converters in stock that can handle 12V to 24V at a minimum of 15A current?

Original message (Croatian)

Znaci step down ide direktno u modul s senzorom

Soldered Support:

Yes, that’s correct, exactly as shown in the schematic.

Unfortunately, we don’t have converters that powerful.

Original message (Croatian)

Da, tako je, baš kao i na skici.

Ne, nažalost nemamo tako snaže pretvarače

Customer:

What about the 10A converter in your catalog - would it hold up under a continuous 10A load for about 45 minutes? The load is 120W.

Soldered Support:

It probably would, but in such a borderline case it might be better to go with a stronger relay or SSR instead.

Original message (Croatian)

Vjerojatno bi, ali možda je bolje ići na jači relej (ili SSR) u takvom graničnom slučaju.