Grove - LED Matrix Driver v1.0

Grove - LED Matrix Driver v1.0 is UART (Serial) to dot matrix LED driver that incorporates various graphics functions.It can only support 32×64 LED matrix. This product is Grove compatible UART interface. It provides easy and rich APIs that abstract the complexity of the underlying LED driving hardware. All you need to is just call these APIs in code to implement different functionalities for your project.

Each dot(i.e pixel) support dual color LEDs. It can produce three colors totally: red (primary color), green(primary color) and yellow (mixed color). The input current for all LEDs can be set at a time.

Note: This Grove module does not support changing the input current of each LED separately.

Version Tracker

Product version	Release date	Support status	Notes
Grove - LED Matrix Driver v1.0(first version)	April 2016	Supported	None

Features

Grove compatible and easy to use
Highly abstracted and complete API
Support dual-color LED-pixel. Three colors totally (the third color is a mix of two primary color)
Interface: UART(SoftSerial in Arduino)

Specifications

Operating voltage(V)	3.3–5 Volts
Operating current(mA)	Maximum: 28–50 mA
Output voltage (from matrix driver)	3.3 Volts
Symbols/Graphics functions supported	Dot, straight line, circle, char, string, number, emoji, image (you can display these symbols by calling API directly in code)
Supported LED matrix size	32(row)×64(column)
Supported color in each LED matrix dot	Dual LEDs (green and red) and a mixed color(yellow), and you can use only one LED in each LED matrix dot
Connector for LED matrix	DBSTAR_HUB 08A
Protocol for Grove port	UART
Working temperature	-40–80 ℃
Dimensions	46.5×44 mm
Weight	9 g(for the module), 12.5(for all single package)

Platform supported

Platform	Seeeduino/Arduino	Rasberry Pi	Beaglebone	LinkIt ONE
Supported status	Supported	Supported	Supported	Supported
Notes	If no version number is mentioned for a specific platform, it means this product support all versions within this platform. But you will need additional corresponding Grove Shield such as Grove - Base shield v2 board.

Hardware Overview

Grove socket, to connect this product to main control board.
LED matrix port(DBSTAR_HUB 08A ), to connect LED matrix. If you can not find a connector like this, you can user jumper wires as an alternative.

Package includes(main parts)

Parts name	Quantity
Grove - LED Matrix Driver v1.0	1 piece
Grove cable	1 piece

Getting Started

Now let us run some basic examples with this module.

With Arduino

Material required

Grove - LED Matrix Driver v1.0 × 1
32×64 LED matrix with one red and one green LEDs in matrix dots (single color LED matrix will also be fine) × 1
Power line (ribbon shape) for × 1
5 Volts(output) Adapter to regulate input voltage for LED matrix × 1
8-pin(female) ribbon cable × 1
Arduino UNO (other Arduino models will also be fine) × 1
Grove cable × 1
Grove - Base Shield × 1

Connections

Connect all parts as following:

Coding Work

You can find more demo sketch at https://github.com/Seeed-Studio/Grove_LED_Matrix_Driver and development library at https://github.com/Seeed-Studio/Grove_LED_Matrix_Driver/tree/master/Arduino/LEDMatrix

1. A typical demo code. You can upload code to main control board with Codebender.

3. Download and upload the code. If you do not know how to upload an Arduino sketch, please visit https://www.arduino.cc/en/Guide/Windows for Windows user or https://www.arduino.cc/en/Guide/MacOSX for Mac user. You can see the result like belows.