GC9A01 Display Kit

A 240x240 round color display connected over SPI, used for watch faces.

Source book: Clocks and Watches
Kit page: https://dmccreary.github.io/clocks-and-watches/kits/gc9a01/
Printable one-pager: gc9a01-one-pager.html

Features

• Lab: Hello World Test
• Lab: Display Time and Date
• Lab: Display Second Hand
• Lab: Cycle Through the Builtin Fonts
• Lab: Draw Clock Face Ticks
• Lab: Draw Clock Dial Digits

Benefits

• Free, open lessons: the Clocks and Watches textbook has the kit page, wiring, and MicroPython code.
• Ready-made curriculum: 8 additional lab pages walk students through the build step by step.
• Wireless-ready: the Pico W option adds Wi-Fi for time sync and web projects.
• Instant feedback: students see their code's results on lights or a display.
• Budget: about $13 (round display $3.19, Pico W $5, breadboard $2, wires $1, USB cable $2).

Parts

• Raspberry Pi Pico ($4) — Microcontroller
• GC9A01 Round TFT ($3.19) — Display
• 830-Point Breadboard ($1.10) — Breadboard
• Micro-USB Data Cable ($2.50) — Power and programming cable