The Raspberry Pi is a wonderful device for enjoyable initiatives and hobbies, but it surely’s additionally a well-liked selection in skilled fields. Such is the case with this mission from the workforce on the Schaffer-Nishimura Lab (opens in new tab). Utilizing a Raspberry Pi, they’ve constructed a customized VR headset (opens in new tab) to help of their neuroscience analysis involving mice.
The headset is sufficiently small to suit on the pinnacle of a mouse and options two SPI shows. These screens mission a glance right into a customized world designed utilizing the open-source Godot sport engine. A customized map was created within the instance footage proven with a grid texture on the bottom. It has cliffs, edges, and different obstacles that the mouse can encounter as wanted for his or her neuroscience analysis.
The thought behind the system is to create a digital world during which the workforce can examine the habits of the mouse, given the challenges and options of the digital map. The headset will be fastened to the pinnacle of the mouse that may locomote across the digital setting utilizing a customized treadmill. Because the mouse strikes in actual life, so does the digital world it explores in real-time.
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The workforce is utilizing a Raspberry PI 4 to energy the system. In addition they 3D-printed a case to mount the Pi and eyepieces for the show modules. A Fresnel lens is used inside every show, as effectively. Based on the official documentation, the shows have a decision of 240 x 210px. The treadmill consists of a styrofoam ball that the mouse can stand on prime of, monitored by optical sensors to find out the path and velocity of motion.
Software program-wise, all the things runs on the Pi, together with the Godot online game engine. They developed a customized show driver to take the Godot video feed and course of it to output to every eye show as wanted for the VR Headset.
If you wish to take a look at this Raspberry Pi mission or possibly even recreate it your self, take a look at the official mission web page at GitHub (opens in new tab). The workforce supplies an in-depth take a look at its building and the software program used to implement the VR results within the headset.