View source for LinkNode R4 ESP-12f ESP8266 WiFi relay controller IoT module

== Introduction ==

LinkNode R4 is a WiFi relay controller and it is powered by ESP-12f ESP8266 WiFi module. There are 4 relay channels and each channel allows you to control high-power devices (up to 10 A) via the on-board relay. LinkNode R4 can be used to remotely turn lights, fans and other devices on/off. The WiFi interface will allow you to associate the board with your existing WiFi network and send the commands over the network.


[[File:211201004-with pillar-001.jpg| 640px]]

[[File:211201004-with pillar-002.jpg| 640px]]

[[File:211201004-without pillar-001.jpg| 640px]]

[[File:211201004-without pillar-002.jpg|640px]]



== Product UPC ==
Product UPC: 713382672825

== Features ==

*ESP-12f ESP8266 WiFi module
*4 Channel relays，supporting:
**277V AC， 10A
**125V AC， 12A
*5V DC power
*Two work modes:
**Program via UART
**Boot from flash
*4 indiator LEDs

== LinkNode R4 Diagram ==


[[File:211201004-diagram.png]]

== Control logic ==


[[File:211201004-GPIO.png]]

== How to use Android APP to control LinkNode R4 ==

LinkNode R4 is an open source 4-Channel relay controller which is powered by the ESP8266 WiFi SoC.

[[File:Linker Nord R4.jpg]]

The following will introduce how to use Android APP to control the LinkNode R4.

=== '''Steps''' ===

'''1. Install Android and iOS APP'''

*Download the APK file from the [https://github.com/delongqilinksprite/LinkNodeR4-app/blob/master/LinkNode-Rx-2016-12.apk LinkNode-Rx-2016-12.apk] and install it.

*if your equipment is iphone/ipad,you can get the app form appstore and name is "LinkNode Relay".

*iOS App download link ：[https://itunes.apple.com/cn/app/linknode-relay/id1163468201?mt=8 LinkNode Relay]

'''2.Login LinkSpriteIO'''

*If you never register an account on LinkSpriteIO, please enter Email and your password, then click the '''REGISTER''' button

*If you have an account on LinkSpriteIO, please enter Email and your password, then click the '''SIGN IN''' button

[[File:LinkNode R4 1.png]]

'''3. Go to Relay device list'''

*Click the plus icon on the upper right quarter to add a new LinkNode R4.

[[File:LinkNode R4 2.png]]

'''4.Scan the QRcode'''

*Get the device information and register it to your account. 

[[File:LinkNode R4 3.png]]

[[File:LinkNode R4 4.png]]

'''5.Configure to accece WiFi AP'''

*Supply the power for LinkNodeR4, the LinkNode R4 will create a AP called '''LinkNodeAP'''. If it can't be detected, switch off your wifi router and try again.

*Use your mobile phone to connect this AP

*Open a browser and enter the ip address '''10.0.1.1''' and you will see the following website:

[[File:LinkNode R4 5.png]]

*Click the button '''configure WiFi'''

*Select your WiFi AP which you want to connect and enter your wifi password.

*If connecting failed, you can go to the same website to configure it again.

*After that, LinkNode R4 will connect to Linksprite IO via the internet.

'''6.Control your 4-channel relay'''

*control the button on the right side to turn on or off the relays, and you can click the relay's name to change it.

[[File:LinkNode R4 6.png]]