Originally a 128x64 monochrome LCD screen was used, which had some UI designed for it:
Due to problems with controlling the UC1701 chip and how the screen looked in comparison to the size of the whole synth it was replaced with a 320x240 TFT screen.
This prompted a updated UI design.
Based on a Low Poly Game GUI kit by wowu (due to licence, it can't be distributed with ps-01 sources).
Contains information about the device, similar to one in a smartphone. Possible information:
- WiFi/network quality
- Battery status
- SD card status
- BPM/volume/octave
Bottom bar with four tabs that correspond with the four knobs below the screen. They are colored blue, green purple and red (similarly to the op-1).