This drone landing pad features an integrated ultrasonic sensor that detects a drones presence. When a drone departs the Arduino starts a timer. When you return your lap time is displayed to you.

You can either try to improve your personal best or challenge a friend to do better than you (if you trust them with your drone that is).

It can be printed and assembled over a weekend.

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List of items used in this project and where to find them:

Arduino Uno: http://amzn.to/2prkQvJ

7 Segment Display: http://amzn.to/2HRAzuR

Battery holder: http://amzn.to/2pwiWJJ

Neodymium Magnets 3 x 6mm: https://amzn.to/2GoyaKV

Coloured wires: http://amzn.to/2IDIU6D

Ultrasonic sensor: http://amzn.to/2pt4xOm

Rechargeable batteries: http://amzn.to/2ptrSQ1

or

Standard AAs: http://amzn.to/2GNj8wg

Red and Green LEDs: http://amzn.to/2puX7Kw

Resistors: http://amzn.to/2HTmLA2

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Download 3D printable parts: https://www.thingiverse.com/thing:2832044

Code is available here: https://www.electromaker.io/project/view/drone-landing-pad-with-arduino-timer

Circuit diagrams: https://www.thingiverse.com/thing:2832044