Adafruit
Adafruit Round RGB TTL TFT Display - 2.1" 480x480 No Touch
· MPN: ADA5806
This round TFT module is aimed at advanced display projects that need a compact circular screen with plenty of pixels. The 2.1" diagonal IPS panel provides 4...
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This round TFT module is aimed at advanced display projects that need a compact circular screen with plenty of pixels. The 2.1" diagonal IPS panel provides 480x480 16-bit full-colour output, with good colour visibility up to 80 degrees off-axis in any direction.
This version does not include a touchscreen. It uses the ST7701S TFT driver with SPI for configuration and TTL RGB “dot clock” data for pixel output, so pixels cannot be drawn over SPI alone.
Please note that this is just the display module; no PCB is included. Although it has a 40-pin connector, its pinout is not the same as standard rectangular 800x480 or 480x272 TFT displays, so it needs a compatible driver board or host with the correct RGB-666 support.
Suitable hosts include powerful controllers such as an ESP32-S3 with octal PSRAM, or a Raspberry Pi using direct-DPI or an intermediary chip such as the ICN6211. It is not intended to be wired directly to a typical Feather or Arduino.
Specifications:
- Display size: 2.1" diagonal
- Resolution: 480x480 pixels
- Colour depth: 16-bit full-colour
- Display type: IPS TFT
- Viewing angle: Up to 80 degrees off-axis in any direction
- Touchscreen: No touchscreen
- TFT driver: ST7701S
- Interface: SPI and TTL RGB 'dot clock' data
- SPI function: SPI is only for configuring the display - you cannot draw pixels over SPI
- Connector: 40-pin connector
- Connector pinout: Does not have the same pinout as standard 'rectangular' 800x480 (4.3", 5" or 7") or 480x272 (4.3") displays
- Required host support: TTL RGB TFT driving
- Required display support: RGB-666 displays
- Suggested microcontroller: ESP32-S3 with octal PSRAM
- Suggested computer: Raspberry Pi with either direct-DPI connection or an intermediary chip like the ICN6211
- Included hardware: Display module only; no PCB is included
- Related display: Same TFT display as PID 5792 but without the capacitive touch panel
- Technical resource: ST7701 Datasheet
- Technical resource: Display Init Code Listing
- Technical resource: Diagram
Check compatibility carefully before use; this display is best suited to projects already using a TTL RGB-666 capable board such as the Adafruit Qualia ESP32-S3 for TTL RGB-666 Display.
Jargon buster
Plain-language definitions for the technical terms used above.
- Colour depth
- Colour depth describes how many different colours a display can show. A 65K-colour display can show about 65,000 colours, which is useful for icons, graphs, and simple full-colour interfaces but is less detailed than modern phone or computer screens.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- IPS
- IPS is a type of LCD panel that keeps colours and contrast more consistent when viewed from an angle. This matters for small displays that may be mounted in a dashboard, handheld project, or enclosure where the viewer is not always looking straight on.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- octal PSRAM
- Octal PSRAM is external pseudo-static RAM that uses an eight-line data interface for higher bandwidth than simpler memory connections. It matters for display projects because large screens and animations can need more working memory than the microcontroller has built in.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
- RGB-666
- A parallel display colour interface that sends 6 bits each for red, green and blue, using many pins to stream pixel data to a screen. It matters because RGB-666 panels need a driver board with the right connector, timing signals, and software setup, rather than the simpler wiring used by small SPI displays.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- TFT
- A thin-film transistor display is a common type of colour LCD used for graphics screens. Knowing a product is for TFTs helps you check that the driver board matches the display’s connector, resolution, backlight, and signalling method.
ST7701 Datasheet
Datasheet · 5.2 MB · Click any page to view full size
Supplier page — adafruit.com
Supplier Description · 862.6 KB · Click any page to view full size
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