Hacking and controlling toy flyers Final presentation Student : Frédéric Blanc Assistant : Rico Möckel Professor : Auke Jan Ijspeert

Motivation Global motivation  Hacking vs designing complete flyers  Transform the dragonfly on a research platform 2

Outline Overview Global schematic of the project Design of the Printed Circuit Board Results Conclusion 3

Overview 4 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-bridges Magnetometer Accelerometer Batteries LDO 8.4 V 4 V 3.3 V PWM I2C UART

Design of the Printed Circuit Board 6 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

Design of the Printed Circuit Board 7 Top viewBottom view

Design of the Printed Circuit Board 8 The new PCB vs the original one :

Results 9 Inside the plastic structure

Conclusion 10 Looking back to the goals – Sensors – Programming The main problems – Time spent for bluetooth module – Time spent on the electronics design

Conclusion 11 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)

Thanks for you attention ! 12