A low-cost, high-function RP2040 board with 14 GPIO LEDs, 2 NeoPixels, a piezo buzzer, and 2 Grove ports.

Key part: Cytron Maker Nano RP2040 board (pinout) (kit photo still needed)
| Part (price) | Role |
| Cytron Maker Nano RP2040 | Microcontroller board with built-in RP2040 |
| Piezo Buzzer / Speaker | Sound output |
| WS2812B NeoPixels | LEDs |
| 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.