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Introduction

CAUTIONS

Thank you for purchasing this HOBBYWING product! For avoiding 
any possible troubles that you may have in use, please take time to 
read through this manual before the use. In addition, please note 
the use conditions and technical parameters of this product.

ATTENTION

01

Specifications:

02

03

Applications

04

Features

06

Explanations for LED Status

07

Factory Reset

USER MANUAL

How to power on the WiFi Express

2

• Tri-color(White /Red/Black) cable: to connect the programming port on the ESC or
   one end of the Y harness.
• Grey color line: it's the antenna to enhance the WiFi signals. 
• LED light: to indicate the working status ofWiFi Express.
• RESET button: to factory reset this WiFi Express module.

The WiFi Express module works with the following products of HOBBYWING.
• XERUN series & EZRUN series of car ESCs.
• PLATINUM series of aircraft ESCs.
• Other ESCs which are compatible with HOBBYWING multifunction LCD program box.

RESET Button

Grey Color Line

LED Light

Tri-color

WiFi Express is a module which adopted the WiFi communication technology for 
transferring data between an ESC and a smart device (Android phone, tablet, 
and etc). It makes the wireless communication between ESC and smart device 
possible; user can easily program and upgrade ESC, and monitor data 
transferring via this unit.

• Working Voltage: 5V-12.6V.
• WiFi Protocol: IEEE802.11 b/g/n
• WiFi Signal Effective Range: 0-10m (Open Field).
• Size: 25.7x25.7x8.8mm (LxWxH).
• Weight: 11.3g.

Connect the ESC to a battery after it’s connected to the WiFi module, and then turn it on. The Red LED will come on solidindicating the WiFi Express is entering the 
working mode.

How to build the wireless connection between a smart phone and the WiFi Express

3

(1) Check all available WLANs shown on your smart device.
(2) Find out the SSID (the WiFi name) named HW-WIFILINK, enter the initial password “12345678” and then click “connect”.

You must change the SSID name after the very first successful connection. Because the SSID and password of all the  HOBBYWING WiFi modules are the 
same, connection failure or misconnection issue may happen if multiple WiFi modules function  at the same time. 

LED turns on solid RED indicating the WiFi Express is successfully powered on and it functions well.
LED blinks indicating the WiFi Express is building the connection or transferring data between the ESC and the smart device.

Keep holding the RESET button with a thin and sharp thing like toothpick or something for about 15 seconds, then you can reset all parameters of the WIfi Express to factory 
default values.

05

User Guide

How to Connect WiFi Express to Different ESCs

1

The way to connect WiFi Express to ESC may vary because of different ESC hardware design. The following are the ways to connect WiFi Express to different ESCs, about 
which way you should take, please refer to the user manual of your ESC. In some case, the special Y harness (As shown picture 1: with three female connectors not two 
female connectors and one male connector) included in the package may be needed for connecting the WiFi Express to ESC.

1. For ESC with the throttle cable and programming cable multiplexed. 

   1.1 For ESC with built-in BEC: in this case, a piece of Y harness is needed to connect the WiFi module and ESC. To be specific, connect the ESC throttle cable and WiFi 
         tri-color cable to connector A and connector B of the Y harness respectively (as shown picture 3).
   1.2 For ESC without built-in BEC (so-called OPTO version): in this case, a piece of Y harness is also needed to connect the WiFi module and ESC. To be specific, 
         connect the ESC throttle cable and WiFi tri-color cable to connector A and connector B of the Y harness respectively. And connect the remaining end 
         (/connector C) of the Y harness to an UBEC to power the WiFi module (as shown picture 3).

2. For ESC that the fan port (on the ESC) is also the programming port

    In this case, please unplug the fan wire first, and then plug the tri-color cable on the WiFi Express to the fan/programming port (as shown picture 2).

3. For ESC with a separate programming cable

    3.1 For ESC with the programming cable which has the output voltage of 5-12.6V: in this case, a piece of Y harness is needed to connect the WiFi module and ESC. 
         To be specific, connect the ESC throttle cable and WiFi tri-color cable to connector A and connector B of the Y harness respectively (as shown picture 3).
    3.2 For ESC with the programming cable which has no output voltage: in this case, a piece of Y harness is needed to connect the WiFi module and ESC. To be 
          specific, connect the ESC programming cable and WiFi tri-color cable to connector A and connector B of the Y harness respectively. And an UBEC is needed to 
          power the WiFi module, connect the remaining end (/connector C) to the battery (as shown picture 3).

4. For ESC with a separate port for programming

    Plug the WiFi module directly into the programming port on ESC(as shown picture 2).

Note: An extra battery(5-12.6V) can replace the UBEC mentioned above.

A

B

C

Connect to the
programming cable

Connect an UBEC only
in the following
circumstances(1.2 & 3.2)

Picture1 

Picture 2 

Picture 3

UBEC

CAUTIONS

How to make change to ESC & WiFi Express via the Hobbywing WiFi Express App software installed on your smart device

4

Start the Hobbywing WiFi Link App software on your smart device after it’s connected to the 
WiFi Express, then the following interface will show up.
Users can program or upgrade their ESCs via the App. (For detailed information, please refer 
to the user manual of HOBBYWING WiFi Link App).

1. WiFi Connection Status

    The ESC icon (at the top right corner on the user interface of the App) will 
    turn Black if the the smart device is successfully connected to the to the 
    ESC. Otherwise, it will stay Grey (as shown right). 

2.How to change the factory-default SSID (the WiFi name) & password

• Click the “Settings” icon and get into the “Setting page” (as shown right) .
• Click “WiFi Module Setting” and get into the “WiFi Setting” page, input the new WiFi 
   name, new password and then click“Save”.

Disconnected

Connected

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