I quickly made two sample applications for ULTRA Zero. The first one is analogue/digital voltage meter. The response is very fast and indeed beyond my expectation. The other one is "Game of Life" utilising 64x32 OLED dots. The voltage meter source is uploaded to

https://github.com/kodera2t/ULTIMA_SAMPLE/blob/master/ULtraZERO_analogmeter.ino

, and Game of Life source is uploaded to

https://github.com/kodera2t/ULTIMA_SAMPLE/blob/master/UltraZERO_GoL.ino

and you can buy ULTRA Zero at

https://www.tindie.com/products/microwavemont/ultra-zero-a-successor-of-sduino-zero/

Actual operation can be found in the following movie... Have fun!