Added an oled screen to my ultrasonic walking stick mock up test circuit for testing/finding limits.

Immediately realized it would make the perfect PicoPong Circuit.

• 2 Player pong - Distance sensor output maps to paddle position.
• alternate xy or other inputs for other games...

Need to convert/rewrite the game for the full oled library but pong is pretty easy, I think I can do it in less than 100 lines of code... maybe..