ELEC Freaks have developed a palm-sized open-source 3D printed mini-drone to be used for smartphone VR experiences – videos embedded below:

ELF quad is the ever low-cost open source quadcopter providing AR plus VR experience. Upholding the spirit of open source, we will share all the hardware, software, app and the codes, enabling anyone to learn and enjoy AR/VR technology while piloting his own copter.

Whilst at the moment it looks basic, a developer model will be released next week so that ideas and improvements could be implented.

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