Seeed Studio Round Display for XIAO is an expansion board compatible with all XIAO development boards. It features a fully covered touch screen on one side, designed as a 39mm disc. It contains an onboard RTC holder, charge chip, and MicroSD card slot within its compact size, perfect for interactive displays in smart homes, wearables, and more.

While initially designed only for the XIAO it can also be used for QT Py boards, although we found Arduino usage will take some effort due to use of forks of eTFT and a mish-mash of libraries not in the Arduino library manager. Instead we recommend trying out this CircuitPython example which worked nicely on an RP2040 QT Py - it probably wont run on a SAMD21 since you need a fair bit of memory.

Features

• Capacitive Touch Screen Expansion Board: Display with 1.28-inch round, 240×240 resolution, 65K colors, providing clear and colorful images exhibition. Uses GC9A01 driver chip.
• High Compatibility: Highly compatible with all XIAO series products, easily integrated into your projects
• Rich Peripheral: Features an onboard PCF8563 RTC, Lipoly battery charge chip, MicroSD card slot, JST 1.25 connector, all within its compact size
• Watch-sized Design: Come with 39mm circular design, suitable for wearable and space-limited projects
• Plug and Play: All pins are on the XIAO headers, no soldering required.

Seeed Description

Seeed Studio Round Display for XIAO is an extension board with a capacitive touch screen and is compatible with all XIAO development boards. It features a fully covered touch screen on one side, designed as a radiant disc with a radius of 39 mm.

With a 1.28-inch round touch screen that has a resolution of 240 x 240 pixels and 65K colors, this board presents the exhibition of clear and colorful images. It can be applied to design a programmable watch, wearable indicator, etc.

The high integration and rich peripherals on the other side of the XIAO extension board are impressive, with an onboard RTC, TF card slot, battery charging chip, and JST 1.25 battery interface, all within a compact 39 x 39mm size. That is, you can have reliable timekeeping, a way to extend memory up to 32GB FAT, a charging method by the lithium battery.

The pins for Seeed Studio XIAO are all led out and no soldering is needed, which offers a convenient development experience. With its mini size, the XIAO extension board is ideal for wearable and small-volume projects. It is a versatile and powerful extension board that can be used for a wide range of projects, from displaying sensor data to creating interactive interfaces.

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