Hacking and controlling toy flyersFinal presentation

Student :Frédéric Blanc

Assistant :Rico Möckel

Professor :Auke Jan Ijspeert

2

Motivation

• Global motivation

Hacking vs designing complete flyers

Transform the dragonfly on a research platform

3

Outline

• Overview

• Global schematic of the project

• Design of the Printed Circuit Board

• Results

• Conclusion

4

Overview

The dragonfly from WowWee Flytech :• Two degrees of freedom flyer

• Flying behaviour change with the battery’s voltage

• No possibility of stabilization

• No sensors, no information on what is happening inside

• Can control only one flyer a time

Global schematic of the project

5

DsPic

Dual H-bridges

Bluetooth

Gyroscope

Step-down regulator

Dual H-bridgesMagnetometer

Accelerometer

Batteries

LDO

LDO

8.4 V4 V

4 V

4 V

3.3 V

3.3 V

PWMI2C

UART

6

Design of the Printed Circuit Board

Critical point : the placement of the components

• Effect of every components on the other ones

– Power device

– Magnetic device

• Split of the power supply for the sensors

7

Design of the Printed Circuit Board

Top view Bottom view

8

Design of the Printed Circuit Board

The new PCB vs the original one :

9

Results

Inside the plastic structure

10

Conclusion

• Looking back to the goals

– Sensors

– Programming

• The main problems

– Time spent for bluetooth module

– Time spent on the electronics design

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Conclusion

• Some possibilities as future work

– Finishing the programming tasks

– Testing the final flyer

– Working on the sensors

• Stabilisation

• Hovering

– Optimizing the PCB

– New firmware for the multipoint option

– Tracking system (sizing the InfraRed LEDs)

12

Thanks for you attention !