Topics tagged with relay module

Relay Expansion replacement?

Lazar Demin — Tue, 03 Jun 2025 14:37:25 GMT

@Shimon-Mor No plans to release a new Relay Expansion. Any 3.3V compatible relay will work with the Omega2!

Relay contacts closed

Hadad — Fri, 02 Feb 2024 19:15:19 GMT

Hello,
I am working in a home automation project that require controlling led strip using both relay and switch in parallels. Led strip require power adapter to convert from 220 V AC input to 12 v 12.5A DC output to power the Led Strip.

this adapter can be powered either by relay or by separated in switch. so if relay not work switch can do the job.

when switching both the relay and switch I noticed that relay contacts shut and not return back again when switch off relay. the COM and NO remain contacted.

do I have to apply a diode to prevent current flow on NO after closing relay.

I have included the wiring of the circuit.
thanks in advance for help.!

Relay options for higher power?

Chris H — Fri, 14 Sep 2018 02:30:03 GMT

Regarding the relays, maybe think about SSR (solid state relays). They're a bit more expensive but controllable with logic signals and available up to very high current - beyond 100A at mains voltages. The AC one also generally offer zero crossing switching i.e. switch at the 0V portion of the AC cycle. HTH.

Water the Garden

Alexandre Arruda — Sun, 27 May 2018 17:03:11 GMT

Hi @Wayne-Holloway ! Can you read the water flow directly in omega GPIO or you need to connect them to the arduino dock ? I can't correctly read my sensor because I don't know how to do this by omega GPIO interrupts. Best regards!

GPIO Problem [Solved]

racarter — Sun, 07 May 2017 19:19:33 GMT

@Patryk-Wychowaniec Thanks - that allowed me to see which pins are set to gpio duty and solved my problem!

Relay Module

Guest — Tue, 21 Jun 2016 15:39:05 GMT

Guess what I need to investigate is if the layout drawings are available.