Adafruit
40-pin TFT Friend - FPC Breakout with LED Backlight Driver
A labelled breakout board for 40-pin dot-clock TFT displays with an integrated LED backlight driver. Breaks out all 40 FPC pins to breadboard-friendly throug...
A labelled breakout board for 40-pin dot-clock TFT displays with an integrated LED backlight driver. Breaks out all 40 FPC pins to breadboard-friendly through-hole pads and includes a FAN5333-based boost converter for driving backlight LED strings up to 24V.
The backlight driver defaults to 25mA and can be increased by shorting the onboard jumpers. Supports LED strings of up to 7 LEDs in series. Designed for advanced makers using microprocessors with built-in dot-clock TFT support (such as STM32, i.MX, or similar).
Key Features
- 40-Pin FPC Connector – Accepts standard 40-pin dot-clock TFT display cables
- Labelled Breakout Pads – All pins broken out and clearly marked for probing and wiring
- Integrated Backlight Driver – FAN5333 boost converter, adjustable current via jumpers
- Default 25mA Backlight – Suitable for 4.3″ displays; increase to 50mA for 5.0″ displays
- Up to 24V Boost – Drives LED strings of up to 7 LEDs in series
Specifications
- FPC Connector – 40-pin
- Backlight Driver IC – FAN5333
- Default Backlight Current – 25mA (adjustable via jumpers)
- Max Boost Voltage – 24V DC
Ideal For
- Prototyping with 40-pin dot-clock TFT displays (4.3″, 5.0″, etc.)
- Breadboarding RGB TFT display connections
- Display driver development and testing
Package Contents
- 1× 40-Pin TFT Friend Breakout Board (assembled and tested)
Jargon buster
Plain-language definitions for the technical terms used above.
- boost converter
- A boost converter is a power circuit that raises a lower input voltage to a higher output voltage. It matters here because the board can power a sensor that needs a higher supply voltage while still using a single connector for power and data.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- FPC
- FPC stands for flexible printed circuit, a flat flexible cable or connector style often used where space is tight. It matters because this breakout needs the correct pin count and pitch FPC cable to connect reliably to the display or high-speed interface.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- 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.
- STM32
- STM32 is a family of microcontroller chips commonly used in embedded electronics. Knowing a product uses an STM32 can help when looking at firmware updates, pin connections, or low-level serial control options.
- 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.
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Related Tutorials
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