Context: Varifocal
We need to make a board to deliver power to all of the various breakout boards, as well as the voice coil motors.
As a bonus, this board could have the MCU/IMU for tracking integrated, as well as the PWM output for the voice coils. This would make it essentially the motherboard of the varifocal headset.
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The headset should be as standalone as possible. Current plans are all electronics are powered from within the headset. Only cable to the computer should be the display cable.
We are currently using the Northstar displays, display driver board, and SLAM functionality, which serves as it’s own separate system. It receives power from the same USB-C cable it receives data. This is currently completely separate from the Motherboard.
IN:
Receives power from power bank. USB-PD over USB-C preferred.
OUT:
4x 2-pin JST 5V headers for the ETVR XIAOs and IR LEDs (power only)
12V supply to the VCM (Voice Coil Motor) Driver
Unconfirmed: 2-4x USB-C (power only) for future expansion
Unconfirmed: Method to power some sort of MCU like a Raspberry Pi
No plans currently. May change in the future.