Me LED Matrix (8×16)

LED_Matrix3

Overview

The Me LED Matrix(8 x 16) contains total 128 pieces of aligned LED. The color is blue. By receiving data from main board, it can be controlled to show the number, letter or symbol. There is a blue ID on the connector. It means that this module can be connected to the port with blue ID on Makeblock Orion.

Technical specifications

● Operating voltage: 5V DC
● Signal mode: I²C communication
● Module size: 73 x 31 x 15 mm (L x W x H)

Functional characteristics

● Display number, string or symbol programmed by main board
● White area of module is the reference area to contact metal beams
● Anti-reverse protection – connecting the power supply inversely will not damage IC
● Support mBlock GUI programming, and applicable to users of all ages
● Adopt RJ25 port for easy connection
● Provide pin-type port to support most development boards including Arduino series

Pin definition

The port of Me LED Matrix(8 x 16) has three pins, and their functions are as follows:

LED2

Wiring mode

● Connecting with RJ25
Since the port of LED Matrix(8 x 16) has Blue ID, you need to connect the port with blue ID on Makeblock Orion when using RJ25 port. Taking Makeblock Orion as example, you can connect it to ports No. 3, 4, 5 and 6 as follows:

board

Guide to programming

● Arduino programming
If you use Arduino to write a program, the library Makeblock- Library-master should be invoked to control the Me LED Matrix. The LED Matrix will display the time, string or number.

code
function

Principle analysis

The Me LED Matrix contain 128 pieces of matrix LED.There are 8 piece per line and 16 per row. The main board sends the data to module through I2C bus, and LED control specific chip in module can handle the data and interpret it. And output relative signal to power on or off the LED. Make them display the content.

Schematic

LED Matrix

5 thoughts on “Me LED Matrix (8×16)”

  1. Do you have any programs already written to load into the Mbot for the LED display showing faces, colors, time, messages, etc.? Something my students could download and load into the Mbot?

  2. Are there any examples – or is it possible – to display two lines of text? I’d like a static text line on the first row and a number for the second row. I know other 8×16 LED panels can be addressed down to the individual LED, but does the library allow for changing font sizes, etc, to allow for multi line displays?

  3. When I code to show a string using one of blocks for LED matrix in scratch, if the size of string is longer over the 8×16 matrix, will the string be flowed to show full text one side to other side like a marquee?

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