The OLED faces labs ported to a 240x240 round color GC9A01 display, the same panel used in cheap smartwatches.

Key part: round display (store listing) (kit photo still needed)
| Part (price) | Role |
| Raspberry Pi Pico ($4) | Microcontroller |
| GC9A01 Round TFT ($3.19) | Display |
| GC9B72 Smartwatch Display ($5.39) | Display |
| Momentary Push Buttons | Input button / switch |
| SSD1306 128×64 OLED | Display |
| 830-Point Breadboard ($1.10) | Breadboard |
| Micro-USB Data Cable ($2.50) | Power and programming cable |
Microcontroller listed first. Prices shown only where known; see the source book for quantities, wiring, and current prices.