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Topic: Permanent Relay Switch (Read 340 times) previous topic - next topic


Aug 03, 2020, 08:04 pm Last Edit: Aug 03, 2020, 08:06 pm by Travisbklein
Hey guys, I finished my arduino sketch which works with 12v led lights and a relay switch.

I am looking for something more permanent and not use the adafruit exposed circuit switch (https://www.adafruit.com/product/3191) I have been using, and just curious if someone could help me find something.

Maybe use a car relay switch?

Thanks so much!


Not sure what you mean.  That relay looks sealed.


Aug 03, 2020, 11:21 pm Last Edit: Aug 03, 2020, 11:26 pm by Travisbklein
relays like this that dont have exposed circuits,



edit: Oh I get what you mean, just google the actual numbers on the relay and get some that are not attached to the circuit boards, I'm so stupid :(


You will still need a circuit.  All those other bits and bobs aren't there for show.  If you want to waterproof stuff put it in a waterproof container and look into potting the electronics.  What is it you want to achieve and why?


Yep, I will be using ATMEGA328P.

I'm using a PIR to activate 12v led strip.

going to learn about potting, I have never done it. I'm ok with a soldering iron.

you guys are the best here thank you so much for the help. I expect to screw up a few times and learn as I go, I bought enough chips and relays so I can practice with this process.



If you are really considering potting your project, be sure to make at least two of the projects. Once potted and you discover a problem you only have the unpotted version to work with.



Potting seems drastic! Will conformal
coating be good enough?


Potting seems drastic! Will conformal
coating be good enough?

Good enough for what? Both potting and conformal coating make things more water resistant, but never make the water proof.

Why not just tell us what the project is?



A search for "waterproof 12v relay" might be productive.

I don't trust atoms.  They make up everything.

No private consultations undertaken!


Sorry not trying to be secretive.

I am making a 12v LED light that turns on with a PIR sensor movement in the bathroom.

Maybe I won't need potting but I am going to do it just for the practice.  And I will also learn about conformal coating also and make one like that.

Parts are so cheap, I'm ok if I screw up a few times in the process.

Thanks guys!

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