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WiFi Robots | How to Build a Wi-Fi Robot

Wi-Fi Control

Setup and Uses

Wireless Connectivity

Wireless Router

If you'd rather not run your robot off your network, our wireless router lets you run it from anywhere. When you add a router to the robot, you can connect multiple network-compatible accessories which communicate with each other. You can jump onto this network with your laptop, phone or tablet when you want to monitor outputs or control the robot.

Control Interfaces

Once you connect the router, you're ready to add a standard network device and a controller.

Wi-Fi Custom Control Interface

With our Wi-Fi Custom Control Interface Package you get

Connectivity begins with the Logitech USB GamePad Controller, which connects directly to your computer via USB port. The drivers should automatically download (if not, find them here). Once they're installed, open your customized control software and jump onto the network. Your computer and the robot should both be on the same network. Verify the connection. You can send signals from your laptop to your robot's ASUS 3-In-1 Wireless Router.The data is routed from the router to the control board. The board then takes the packet and disrupt the commands to each device on the robot. Devices like servos, motors and sensors can be turned on and off with the 4 Relay, 7 Channel High Curr TTL Driver Module. Power to the devices themselves is regulated by the 3 Voltage Regulators (provided).

Once your control board is customized, it can't be edited (although it can be tweaked if your software needs change). With this setup, you can maximize the robot's capabilities without learning code.

Programmable WiFi Custom Interface

We offer a less expensive alternative, the Programmable WiFi Custom Interface Package. Its Arduino platform is extremely user-friendly, and it's a great way to learn programming language. This package includes:

Programmable Controls
Click to view larger image.

The Arduino option is similar to the Custom Controls Interface Package (above). The gamepad connects to your computer, which is already running our custom software. Jump on the Asus 3-In-1 Wireless Router networks, and you can communicate with the robot. The packet goes directly to the Arduino Ethernet Shield V2. The Ethernet shield plugs directly into the SDR Custom Arduino Mega Shield, which is plugged into the Arduino Mega 2560 R3. This facilitates fluid communication between the three components. Now you can control your devices and relays.

This option lets you modify the code at any point, even when you add new devices to the robot. It's perfect for robots whose uses change frequently, or for those in educational settings. Often, a simple numeric change can alter speed and control, flow and distance or checking. On the other hand, though, users with more advanced programming experience can make more intricate changes. We leave comments in the code to help you through, and the Arduino community is also available to fresh Arduino users. Start here.


For those that want cameras, we have the Etrovision Video Server that allows you to connect and stream any standard RCA Camera. The Etrovision just plugs into the back of the router and you can then access and control the cameras from the wireless network or Internet. IP cameras are available for our standard WiFi robots. We also offer custom camera systems with a pan and tilt that is controlled with our WiFi Control Package (hence the gamepad controller). This package can be further upgraded by adding a 30x Optical Zoom 1/4 Inch Camera. This will allow another degree of movement as you can pan, tilt and zoom.

Two Way Audio

Two way audio is available and will enable you to send and receive audio through a web interface. This can be another feature of the Etrovision Video Server.

LED Lights Assembly

LED lights are available as chassis mounted or camera mounted. They are remotely operated from the software, allowing you to see when it's dark. These LEDs are very low power, while still providing a large amount of light. This can be very helpful for night operation.

Pan and Tilt Camera

Our standard pan and tilt system can pan a full 360 degrees and tilt around 50 degrees. This movement is controlled by two servos which are powered by the voltage regulators included with both Wi-Fi packages. Either of our cameras can be mounted to this pan and tilt system.

Another option you can select is our dome camera option. This has a built in pan and tilt system with a protective dome. Most of our dome cameras communicate through RS485 which can be configured on your control board though your order.

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Choosing Between a Router or Bridge

There are two networking options available for our WiFi robots. The standard router option provides a simple solution to get you up and running in no time and with little to no IT experience. This will allow your robot to create and move around a wireless network that you and other wireless devices can connect to.

The bridge option allows your robot to act as an extension of an existing WiFi infrastructure. Bridge equipped robots also come with the added bonus of being able to be remote controlled from anywhere with access to the internet. Coupled with the Two-Way Audio option described below it can serve as a basic and robust Remote Prescience option.

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How to Build a WiFi Robot - An example of configuring a WiFi controlled robot

a. Each WiFi robot comes with a CD that helps you get things going. Its up to you if you want to use a static IP or have the bridge find an available IP address on your network. This option will be presented to you when setting up the IP address of the bridge you have bridge. The benefit of using a dynamic address is that its simpler, however, you will lose the ability to access the robot from a remote location or any sort of automation. This is because without knowing exactly what IP address your robot is at on every start up, you will not know where to send commands to. When using a static IP address make sure that it does not conflict with an existing IP on your WiFi Network.

b. If you are using the router option then you simply need to connect to the robots router through Ethernet, to set it up. After it is configured, it is as easy as plugging in your components and mounting it on the robot.

Step 2: Plug the Etrovision server into your network

Its best to connect directly to your router here, you can test it through the wireless bridge in the steps below. Setup the EtroVision. The software disc that comes with the Etrovision will auto detect the camera. It is recommended you use a static IP address here so you do not have to keep looking for it each time the robot powers up. If you use a static, make sure you do not overlap with any address on your network. Keep in mind, this is your local network typically When you type in the IP address you should get the server main page. After setting a static IP address, you can go to that address on any Internet Browser to have access to advance settings. Refer to their manual for more detail.

Step 3: Hooking in to the router

Now all your needed devices are set up, unplug them from the network and plug them into the wireless bridge. They should work just the same as they did when plugged into your wired network, only they will be getting routed through your wireless bridge and the activity lights on you bridge will start blinking etc. Of course, you will have run the desired power to each of your devices, so it may be able to move around without being constricted by wires.

Step 4: Completing the setup

When your robot is powered on the wireless bridge will take several seconds to boot up and connect to the network. You now have a mobile platform set up to run on you wireless network. If using using our Wi-Fi control package and out custom pan and tilt with an standard camera, both the robot and the camera will be controlled with the gamepad or mouse using our custom PC interface program.

Additional Resources

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This is a custom heavy duty 4WD All Terrain Robot set up to run wirelessly using WiFi.
The Wireless Bridge is mounted on a plate on top of the batteries.
All the controls are mounted under it. There is no IP camera on this.


This is our standard 4WD WiFi controlled IG42 ATR Kit. You can purchase this kit from our online store.

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Controlling a WiFi Robot

The Wi-Fi control package interface program utilizes a .NET program in which we provide the source code. The program will control and monitor the robot via a RS232 or Network Port Connection. The control program interfaces with a custom control board that is programmed to match your robot's specifics such as motor controllers, encoders, sensors, relays, current monitoring, voltages, etc.

Robot Control Interace

The typical controls are...

Driver Controls

  • Right Shoulder: Hold to enable drive.
  • Right Joystick: Robot Drive. Push forward to go forward, reverse to go reverse. Pushing left and right as pushing forward and reverse will steer the robot.
  • Back: Toggles the robot between half speed and full speed.

Camera Controls

  • Left Shoulder: Hold to enable camera controls.
  • D-Pad (Up/Down): Incrementally change the position of the camera's tilt.
  • D-Pad (Left/Right): Incrementally change the position of the camera's pan.
  • Left Joystick: Tilt the camera while the left shoulder button is held down.

Auxiliary Controls

  • Button X (Blue) Relay 1 on and off.
  • Button A (Green): Relay 2 on and off.
  • Button B (Red): Relay 3 on and off.
  • Button Y (Yellow): Relay 4 on and off.

Logitech Gamepad
Logitech Gamepad
This is the game controller we offer with many of our WiFi Robot packages. The controls (to the left) are based on this gamepad's configuration.

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Learn about the latest WiFi robot technology. Visit our page and 
get the latest information on how to build a WiFi robot as well as 
how to control and configure your Wi-Fi robot platform.
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