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Micro Dot pHAT
The Micro Dot pHAT is a retro-style LED matrix display for the Raspberry Pi, featuring six Lite-On LTP-305 dot matrix modules for an effective resolution of ...
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The Micro Dot pHAT is a retro-style LED matrix display for the Raspberry Pi, featuring six Lite-On LTP-305 dot matrix modules for an effective resolution of 30 × 7 pixels plus decimal points. Each 5 × 7 matrix is driven by IS31FL3730 LED driver chips over I²C.
Use between one and six matrices in your choice of green and/or red. The display is ideal for scrolling message boards, spectrum analysers, clocks, and sensor readouts.
Key Features
- 6× LTP-305 LED Matrices – 5 × 7 pixels each with decimal point (30 × 7 total)
- 3× IS31FL3730 Drivers – I²C-controlled LED matrix driver chips
- Green and/or Red – Mix matrix colours to suit your project
- pHAT Form Factor – Fits directly onto the Raspberry Pi 40-pin GPIO header
- Python Library – Comprehensive library for easy control
Compatibility
- Raspberry Pi 3B+, 3, 2, B+, A+
- Raspberry Pi Zero and Zero W
- Any Raspberry Pi with a 40-pin GPIO header
Ideal For
- Retro scrolling message displays
- Spectrum analysers and audio visualisation
- Clocks and countdown timers
- Sensor data readouts
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- LED driver
- An LED driver is a control chip or circuit that supplies and switches power to LEDs. For a display board, it reduces the number of microcontroller pins needed and handles tasks like lighting the right segments and adjusting brightness.
- pHAT
- A smaller add-on board format for Raspberry Pi, similar in idea to a HAT but usually not full-sized. It matters because pHAT compatibility can affect how neatly a board stacks or fits into a Raspberry Pi project.
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Displays & Screens
Related Tutorials
Free guides on learn.littlebird.com.au
