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		<title>ESP8266 WiFi relay switch (Arduino IDE)</title>
		<description>Discuss ESP8266 WiFi relay switch (Arduino IDE)</description>
		<link>https://iot-playground.com/esp8266-wifi-relay-switch</link>
		<lastBuildDate>Sun, 05 Apr 2026 13:24:07 +0200</lastBuildDate>
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			<title>wony366 says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-604</link>
			<description><![CDATA[hi,guys ,this program is run perfect, but i think it 's a little slow to change the switch,and this method is very strange. is there any direct control method by mqtt driver or other driver example ? i founded there is not a mqtt api for EasyIoT server MQTT driver, i used arduino IDE for ESP8266 without arduino,hope somebody can help me ,best wishes!]]></description>
			<dc:creator>wony366</dc:creator>
			<pubDate>Mon, 24 Oct 2016 17:12:11 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-604</guid>
		</item>
		<item>
			<title>Prince says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-586</link>
			<description><![CDATA[Great :) How many relays can we use without arduino? multiple or just one?]]></description>
			<dc:creator>Prince</dc:creator>
			<pubDate>Sun, 19 Jun 2016 19:10:29 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-586</guid>
		</item>
		<item>
			<title>Alexander says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-571</link>
			<description><![CDATA[hello, awesome tutorial, i have a question ... i work with easyiot server and its working, how can i make that relay control but using my phone and working with easyiot? its there any way for watch it from the browser of my phone(like the computer) or i have to use easyiot cloud ? and if i have to work with easyiot cloud , can someones tell me how to program it like its working with the easyiot server ?]]></description>
			<dc:creator>Alexander</dc:creator>
			<pubDate>Mon, 11 Apr 2016 06:11:16 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-571</guid>
		</item>
		<item>
			<title>Claudiney Marques says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-562</link>
			<description><![CDATA[For me works with two transistors 100k in Gpio 0]]></description>
			<dc:creator>Claudiney Marques</dc:creator>
			<pubDate>Tue, 08 Mar 2016 01:49:26 +0100</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-562</guid>
		</item>
		<item>
			<title>Glenn John says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-537</link>
			<description><![CDATA[i have made this, but my logic high is a bit inverted. :) Does this circuit assume that your relay is triggered by a GPIO low ? Because 2N222 configuration seems that if GPIO from ESP is low, VIN to relay is high, and then if GPIO is high, VIN to relay is pulled down. So, again, is your relay triggered by a low level ? Thanks, and more power to you! :)]]></description>
			<dc:creator>Glenn John</dc:creator>
			<pubDate>Thu, 21 Jan 2016 09:25:23 +0100</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-537</guid>
		</item>
		<item>
			<title>lahtuo says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-511</link>
			<description><![CDATA[Hi, I'm facing a small issue with this build. When I turn the power on the ESP seems to hang (doenst start) and the Relay keeps pulling. If I turn the power off and disconnect the line between the ESP and the Resistor everything works OK after the power is turned on. Also now when I re-connect the wire I can control the Relay with ESP. Does anyone have any idea what might be the issue? Thanks in advance.]]></description>
			<dc:creator>lahtuo</dc:creator>
			<pubDate>Tue, 29 Dec 2015 10:40:08 +0100</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-511</guid>
		</item>
		<item>
			<title>joseph zajdler says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-510</link>
			<description><![CDATA[Could I substitute this relay and forget about the resistors and transistor. http://www.aliexpress.com/item/2-two-channel-relay-module-relay-expansion-board-with-optocoupler-3-3V-and-5V-compatible/32305097030.html?spm=2114.01020208.3.95.hfkNsm&ws_ab_test=searchweb201556_1,searchweb201644_1_79_78_77_82_80_62_81_61,searchweb201560_3]]></description>
			<dc:creator>joseph zajdler</dc:creator>
			<pubDate>Thu, 24 Dec 2015 20:15:05 +0100</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-510</guid>
		</item>
		<item>
			<title>Super User says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-413</link>
			<description><![CDATA[ You can add physical buttons to the system. This is framework, and you can build your own system and you decide how you will use it. For more questions please join community forum.]]></description>
			<dc:creator>Super User</dc:creator>
			<pubDate>Sun, 20 Sep 2015 12:24:21 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-413</guid>
		</item>
		<item>
			<title>Geo Zar says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-404</link>
			<description><![CDATA[Hey i love all your projects but i have a question if not everybody in house use a smartphone or (a future upgrade ) the central touch screen control of the house and he want to open the light of the relay with a pysical button is it possible to add one; ( and the server see if its on or off)]]></description>
			<dc:creator>Geo Zar</dc:creator>
			<pubDate>Thu, 17 Sep 2015 20:47:42 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-404</guid>
		</item>
		<item>
			<title>Xtreme NO says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-352</link>
			<description><![CDATA[Keep this going please, great job!]]></description>
			<dc:creator>Xtreme NO</dc:creator>
			<pubDate>Thu, 20 Aug 2015 15:21:46 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-352</guid>
		</item>
		<item>
			<title>cweibel says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-348</link>
			<description><![CDATA[ Hey sueche, I just added the following to the start of my init.lua file: led1 = 3 led2 = 4 gpio.mode(led1, gpio.OUTPUT) gpio.mode(led2, gpio.OUTPUT) gpio.write(led1, gpio.HIGH); gpio.write(led2, gpio.HIGH); Whatever is connected to the relay won't start when you power on the ESP-01, when you write gpio.LOW to your pin, the relay will be triggered. This solves the problem through code rather than needing to rearrange your circuit.]]></description>
			<dc:creator>cweibel</dc:creator>
			<pubDate>Tue, 18 Aug 2015 15:55:19 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-348</guid>
		</item>
		<item>
			<title>sueche says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-321</link>
			<description><![CDATA[Hi, would you clarify on 5V relay which pin is GND and which is IN (it's not visible from the drawing) ? Assuming the middle one is IN, when I start the board the logic is reversed "1" mean "OFF" and "0" means "ON". Am I doing something wrong ?]]></description>
			<dc:creator>sueche</dc:creator>
			<pubDate>Wed, 29 Jul 2015 12:35:37 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-321</guid>
		</item>
		<item>
			<title>Ryan says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-305</link>
			<description><![CDATA[ Try to increase 47K resistor to 100K. Or use different ESP and connect resistor to different GPIO pin. If you have more questions please join community forum. Thanks for the quick reply, that worked for me.]]></description>
			<dc:creator>Ryan</dc:creator>
			<pubDate>Wed, 15 Jul 2015 21:04:01 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-305</guid>
		</item>
		<item>
			<title>Super User says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-304</link>
			<description><![CDATA[ Try to increase 47K resistor to 100K. Or use different ESP and connect resistor to different GPIO pin. If you have more questions please join community forum.]]></description>
			<dc:creator>Super User</dc:creator>
			<pubDate>Wed, 15 Jul 2015 16:16:49 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-304</guid>
		</item>
		<item>
			<title>Ryan says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-302</link>
			<description><![CDATA[Hey, nice tutorial, I was able to get everything working except for one thing. When i reboot the esp8266, if gpio2 is connected, the device will not boot. If i were to disconnect gpio2, start esp8266, then connect, everything works as expected.]]></description>
			<dc:creator>Ryan</dc:creator>
			<pubDate>Wed, 15 Jul 2015 08:18:38 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-302</guid>
		</item>
		<item>
			<title>Jacques Shepherd says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-299</link>
			<description><![CDATA[I know that, but how can I connect more relays to one esp-07? do I have to add gpio3 and gpio4 to sketch and program?]]></description>
			<dc:creator>Jacques Shepherd</dc:creator>
			<pubDate>Tue, 14 Jul 2015 13:49:51 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-299</guid>
		</item>
		<item>
			<title>Super User says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-297</link>
			<description><![CDATA[ Yes, you can use other than ESP-01]]></description>
			<dc:creator>Super User</dc:creator>
			<pubDate>Sun, 12 Jul 2015 23:51:13 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-297</guid>
		</item>
		<item>
			<title>jacques says:</title>
			<link>https://iot-playground.com/esp8266-wifi-relay-switch#comment-295</link>
			<description><![CDATA[Hi, how can I program an esp-07 so that I can use more gpio's]]></description>
			<dc:creator>jacques</dc:creator>
			<pubDate>Sun, 12 Jul 2015 17:00:31 +0200</pubDate>
			<guid>https://iot-playground.com/esp8266-wifi-relay-switch#comment-295</guid>
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