Chat with robot through phone

This lecture will show you how you can chat with your robot, control it using simple commands, using your phone. You can choose from a variety of options to control the robot different kinds of parts, with a large command set.

Requirements

An Android phone with version 5.0 (Lollipop) or above
Integrated Bluetooth chip in your phone
Lego Mindstorms EV3 Brick
Ozeki 10 installed on your phone: Installing Ozeki 10 on your Android device
EV3 Brick paired with your phone using Bluetooth: Bluetooth pairing on Android phones
EV3 Brick connected to your phone: Connect the Lego robot to phone

Task #1

Start Control Panel on your phone's browser

You can get the connection info after you start the service on your phone. You can click on the link then sign in with the given username and password. You can get more information about this process in Connect the Lego robot to phone lecture at Task #1. After you have succesfully signed in, choose the 'Control Panel' icon to access the different types of Lego connections.

Figure 1 - Choosing Control Panel

Task #2

Click on the LED connection

On this list you can see your EV3 robot's different connections, you need to filter the connections, in order to see only the Lego connections, you can read more about that in Connect the Lego robot to phone lecture at Task #5. After you have done that, choose the LED connection from the list, as shown at Figure 2, there you will be able to access LED options.

Figure 2 - Selecting LED_1 to control LED

Task #3

Send command to control the LED through Ozeki chat

In the LED details, if you scroll down a bit, there is a tab called chat, there you will be able to chat with your robot, send commands to it. You can write your message to the 'Type your message here' field then you need to click on the blue 'Send' button to send it, the process can be seen at Figure 3. You can query the full command set with a 'help' command, this will list all the available commands, also describing what they are used for. For example if you send an 'orange' command your robot's LED will change to orange, or you can change it to other colors too.

Figure 3 - Sending commands

The Brick Status Light command set

With the listed text commands you can control the LEGO LED effectively from Ozeki 10. The first 'Description' table contain all the commands to control the LED, the 'Command table' control all the basic commands that is gonna help you using this chat funcionality. These messages can be sent from e-mail, SMS or Snap codes, so you can choose from different options.

Command examples	Description
off	turn off the LED
green	set LED color to green
red	set LED color to red
orange	set LED color to orange
greenflash	set color to green and flash LED
redflash	set color to red and flash LED
orangeflash	set color to orange and flash LED
greenpulse	set color to green and pulse LED
redpulse	set color to red and pulse LED
orangepulse	set color to orange and pulse LED

Commands Table - These commands can controll the LED

Basic commands	Description
help	request the command set
subscribe	subscribe to device messages
unsubscribe	unsubscribe from device messages
subscribers	shows the list of subscribers