Plug n Play Relays!

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A while ago one of you guys told me about these little relay modules. It took me a while to get my hands on some of them but damn if they aren't really useful! They include a 3.3V regulator, serial connection, and an easily controllable relay! Watch on to see more of why I love these little modules!

I do not provide links for where to buy these - SORRY! To find them just type in "ESP8266 Serial Relay" or "LC Tech Relay" into your preferred cheap electronics supplier (Ebay, Aliexpress).

Note: This video is not a paid endorsement. I just really like these things and there don't seem to be too many people who talk about them.

[PIXscotland]

That's exactly the board setup I'm working with at the moment!
I'm building some Amazon Echo controlled Relays as alternatives to Sonoff devices as the Sonoff network keeps dropping.
The overall project may cost a little more than a Sonoff basic but it'll be offline and fully under my control including custom control.

[leglessinoz]

There is a low voltage Sonoff called the Sonoff SV. I've also modded a Sonoff Dual to not switch the incoming mains. The relays just behave as NO switches.

[surenbono]

.Hazard reminder.!.!.. do not touch it while fired from the mains ac240v...the back is not covered..!.!

[RockTo]

Would this relay work for a replacing a switch for gas fireplace?

[jimb]

I fooled with these things a while ago. Personally, I find the Wemos D1 mini with a relay shield smaller, cleaner, and not even a need for a programmer. And no messy serial commands.

[sarvinr]

Can I know what IC is Installed on the Relay Board!
I have to Make the whole thing customly! :D

[neriksen]

No setup assistance just a lot of stuff we already knew

[Hasitier]

Did you know there is a Sonoff LV - a low voltage version which is from 5 to i think 30v dc and comes without a case. It costs about the same as the Sonoff you showed here. Inhaftiert bought one of these a year ago and it works fine.

[marionichilo]

will this work on 12 volt system line on a truck to dome light with a horn. when doors on the horn will go off.

[tablatronix]

There seems to be another type of these that is maybe less quality, not serial but has opto isolation - wifi smart outlet u34 esp8266 wifi relay module etc

[grzegorzsternik]

I made door and gate lock my home with two of this.
I used that with orginal software with at commands. The problem was that I had to make mini ups with lion cell. Independent power supply is nessesery for wi fi connection.
I will waiting for the next video about this module and programing with other better softwares.

[thespyderryder]

Does the LC TECH BOARD work out of the package? Of so what do you have to send to it to pill in the relay? I don't want to program it to make it work just send the proper code to the ip address.

[cgmckeever]

I couldnt get this board (labeled HW655) to work without doing a microcontroller flash (as well as ESP code flash). I did find a similiar looking board on Amazon that works without the chip flash. Lots of versions of these boards floating around. YMMV

[dompower]

Very nice and easily understandable video

[kashif]

Hi,
I am trying to connect 4 Relays and 4 Buttons to my Nodemcu esp8266 but unable to do so my PIN configurations are as under.
Relay1 to D1, Relay2 to D6, Relay3 to D7 and Relay4 to D8
Button1 to D2, Button2 to D3, Button3 to D4 and Button4 to D5
can u guide me if possible which pins to be used for Relay and which for Buttons Thanks in advance,

[briandurward]

This is really useful. When do you plan to upload the full programme?

[peterlorne]

Hi!
Nice video!
The link you talk about on the screen.
I can't se it.
Can you please send it.
Regards
/ Peter

[drm]

Is there any special configuration I need to take into consideration to run this simple example code? I uploaded the code to two esp01 and tested this on two different relay modules and was unable to heard the activation of the relay

[williammiller]

Any time I see these relays I wonder if there needs to be a snubber on it. Or am I not thinking properly?

[skeepskeeperson]

Cool board. Seems pricey at $12+ on eBay. Not sure if you have a cheaper link.