This document discusses several educational demonstrations using LEGO robots, BlueMix cloud services, and statechart modeling: 1. A LEGO EV3 robot arm is controlled over MQTT using bridge software and its video stream is monitored, to provide experience with real actuators. 2. The Yakindu statechart tool is integrated via REST to teach high-level modeling, with HOW-TO documentation provided. 3. Node-RED is used to connect message queues and services like Watson on BlueMix to teach service integration, with an MQTT audio app and Watson use cases developed.

1. 1
Budapest University of Technology and Economics
Department of Measurement and Information Systems
Budapest University of Technology and Economics
Fault Tolerant Systems Research Group
CPS Education
(LEGO Demo System related slides)
Gábor Guta, PhD
the.gaboo@gmail.com

2. Key Services
Bluemix:
▪ Message Broker (IoT Foundation): Interconnection
▪ Data Bases: Data Aquisition
▪ Watson: Intelligent Processing
▪ Mobile Computing: GUI, Transducers, Sensors
VCL:
▪ Digital Sensors + Single Board Computers: Smart Sensors
Complex control:
▪ State chart, integrated analytics

3. 3
Overview

4. 4
LEGO Robot in VCL
▪ Goal: provide experience
with real actuators
▪ Solution: using LEGO EV3
as Robot Arm
▪ Contributions:
o Bridge software for EV3DEV
to interpret MQTT
commands
o HOW-TO for monitoring
over videostream
Source: https://legoeducationuk.wordpress.com/2013/04/10/see-the-new-ev3-robot-arm-in-action/

5. 5
Statechart Based Development
▪ Goal: Teach high level
modeling of the systems
▪ Solution: integrate
Yakindu to the tool chain
▪ Contributions:
o HOW-TO for Yakindu
o Integration through
REST Web Services
Source: http://statecharts.org/documentation.html

6. 6
BlueMix/Watson
▪ Goal: Teach service
integration
▪ Solution: Connecting
message queues and
services with Node-red
▪ Contributions:
o Own MQTT Audio interface
app
o Use Cases for Watson
integration