ESP8266 wifi relay review

This is a module which can be controlled over its own access point, or connected to your wifi network. It only supports TCP socket communication, there is no MQTT or HTTP support

Purchasing links:

[joshportelli]

If you want static IP, you can just tell your router to always reserve a specific IP for the MAC address of this wifi relay device.

[JbVlad]

This works without any problems for Home-Assistant. The esp8266 needs to be flashed like any other wifi module for Home-Assistant. The MCU on the board does the work from UART.
In Home-Assistant the yaml file needs to be configured something like this. (This is a one-relay example). The UART for the relays is [0xA0, 0x01, 0x01, 0xA2] etc.

switch:
- platform: template
id: relay1
name: "relay1 switch"
turn_on_action:
- uart.write: [0xA0, 0x01, 0x01, 0xA2]
- switch.template.publish:
id: relay1
state: ON
turn_off_action:
- uart.write: [0xA0, 0x01, 0x00, 0xA1]
- switch.template.publish:
id: relay1
state: OFF

[vitallistreliaevcentenokyb]

Important: the Relay Board needs to be showing the RED diode and NOT the BLUE diode on the board. I was trying to switch the relay and nothing was happening. If you want to change back to mode 1 (with the red light) press S2 while booting the relay.

[kondordv]

thank you for your video, you saved me more than the seller which has nothing about controlling. The application is not very familiar, buttons can't be graphical arrange and a button can't control two states like a switch, pressed first time to send a code pressing second time sending another code. For the beginning it's good even like this. Thanks again.

[MrBobWareham]

Thanks for the review I was going to purchase one but after your review, I don't think I will bother I will just design and make my own with an 8266-01 and two replays to switch when I want so thanks for saving my pocket

[subirkdey]

Very nice video Csongor. Well done with all necessary detail. The pilot wire in our central vacuum is shorted somewhere. Since the wiring is inside the wall, I cannot repair it. The vendor said I have to rewire the system pulling the pilot wire under the carpet, inside the wall, through the attic and under the house crawl space. The cost of the wire will probably be $100, not to mention the cost of labor. They also sell remote vacuum turn on for $180. So I turned to IOT. Using your video, I made it to work. To answer your question about Dynamic IP of the ESP8266, I assigned static IP for ESP8266 in the router. Everything is working like a charm and I spent less than $10. To complaint, I do not like the Wifi TCP/UDP Controller interface. Every time we lose power, I have to press the reset button and reestablish the communication. It may not be the software issue. It may be hardware issue. Anyway, thanks again for the nice video. Keep it coming.

[brodshooter]

This can be flashed with custom / DIY firmware, it uses serial interface to switch the relays.

[vitallistreliaevcentenokyb]

Thanks for your video. How do you change back to mode 1? I didn't fint out yet

[cerulyse]

The ESP relay card I bought recently doesn't have a controller on the main the gpio from the ESP switches a transistor directly to control it

[viniciusdias]

How do I activate the 2 relays in a custom code in arduino skect? What would it be like for me to drive 4 relays, since I only have 2 gpio?

[TheGamer-ynyz]

Hello,

Which way do the relays work?

Let me explain:

my goal is that when a relay receives a signal from the outside (example: a button wired on the relay), an html request is launched.

Thanks in advance.

[ramthaLord]

hi there
Just asking about the output wires how you connect them there 3 wire output on each switch. sorry for the question but I am new in this thing and I am interesting to learn
thanks in advance

[GurinderSingh]

Can I use this without INTERNET directly connected with app in mobile or without connected any router

[vonries]

If it is like the single relay version then you should easily see that two of the pins are not connected. One is ground because it gets its ground through the device itself and the other is the TX pin which is why your not getting a signal back.

[tupchurch]

Would a 24V battery blow this up? Can it be used to switch a DC inverter toggle switch on and off? It would need to be latching, correct?

[bartekll]

How did you uploar code to ESP? I think all adapters to this small ESP needs additional switch or jumpers to upload code ;/

[laszloattilaschmidt]

Szia! Remek a videó. Hasonló esp8266-os delay-es modult vásároltam, próbálom azt csinálni amit itt a videóban bemutatsz, azonban amikor az ESP8266 Smartconfig-ot megnyitom az SSID: után <unknown ssid> jelenik meg, és sehogy sem sikerül a hálózatot azonosítanom, mi lehet a probléma?

[stolegrom]

Is there any wifi relay like that which uses 240V AC as main supply? I cannot find them on aliexpress. I only found 5v, 12v and 24v.

[El_IrregularDX]

you can use this with the regular arduino firmware instead of the at firmware by removing the RX jumper and writing serial commands to control both relays, i forgot exactly how to but when i remember ill update this comment

edit: here it is
relay 1:
Serial.write(0xA0);
Serial.write(0x02);
Serial.write(0x01);
Serial.write(0xA3);
relay 2:
Serial.write(0xA0);
Serial.write(0x02);
Serial.write(0x00);
Serial.write(0xA2);

with this you can control them using Blynk IOT, remoteXY or homeasisstant, or even with another microcontroller

[guillermotomasini]

the manufacturer site is 100% in Chinesse. Could you use wireshark in order to scan the TCP packets?