Skip to main content

788bs Led Matrix display interface with Arduino uno

788bs Led Matrix Pinout


There are several types of led matrix Displays available in the market. We can differentiate it as per size and types of connection, e.g. 5x7, 8x8, common anode, and common cathode type. It comes in different single colors and RGB.

But in this article, I will discuss 788bs as a common anode 8x8 red color matrix Modules. We use it in many electronics displaying items, e.g. electronics clocks. also for moving message displays, displaying games, etc.

We use a dot matrix display with an Arduino UNO board directly, sometimes in projects. But for some projects, we use a max7219 chip or 74hc595 for dot matrix driver as required in our projects.

788bs Led Matrix

8x8 led Matrix Pinout details


The 788bs led matrix modules used in various colors, but I specifically describe the red led matrix. It is very easy to Interface a led matrix with an Arduino board as compared to an RGB led display.

If we look at a piece of the 8x8 dot matrix, it contains 16 pins in which 8 pins used for rows and 8 for columns. That's mean in rows and columns have 64 LEDs. We start from Pin # 1 to pin # 8. Pin number 1 is R5 (Row-5) and Pin number 8 is R3(Row-3) at the downside.

At the upper side From Pin 9 (Row-1) to Pin 16 (column-1) located. But a newbie always confuses and starts from zero, because we know the picture/diagram. often we get from some source, also we have to sort out which one +VE and -VE. might be an expert can understand from common cathode/anode type.

But my concern about the person has a basic knowledge of electronics. Who try to make their own initial display projects like a clock or some more.


Ok let’s start if we have an 8x8 dot matrix, And how do we know where pin 1 is? As in IC Chips near Pin 1, a dot mentioned at IC/Microcontroller Chip. But here, how do we know?

788bs Led Matrix


At the led matrix module, the manufacturer writes the tag or mark at pin 1 side, as shown in the figure. We definitely find it. And also a curve mentioned at pin number 1 side.

788bs Led Matrix

Row =       +  Positive Supply
Column =  -   Negative Supply
The testing power supply should be 1.5V DC required. So the only one battery cell enough or uses one 130 ohm resistance in series at a positive/negative side.

788bs Led Matrix

After that attached led to the power supply. We found that the 8th column and 5th rows led become ON as Connection shown in the figure. How to connect the battery cell with a matrix display.

788bs Led Matrix

Pin Test of led dot matrix

As shown in fig pin # 1 and pin # 16 got Energize and the 8th Column and 5th-row led become ON. We should verify the Dot-matrix before using it because if any led found blown we can replace it with a good one.

788BS led matrix

Programming with Arduino UNO


To run the 788bs, you need to check it with Arduino UNO. What material you need to perform a complete test.

Arduino UNO        Amazon
Breadboard         Amazon / Banggood
788BS 8x8 matrix    Amazon / Banggood
Battery (1.5V) only one
Jumper wires

We often use the dot matrix display with the shift register 74HC595 led driver or max7219. most common in electronic Circuits, we operate it with a Microcontroller or Arduino platform, and even with Raspberry Pi. But in this circuit, you can test the matrix direct with an Arduino UNO board.

Interface dot matrix with Arduino


First set the matrix circuit, as per the connection given in the picture diagram. start the Arduino IDE to program the Arduino UNO board. Arduino IDE is available at Arduino's official site.
This circuit, it does not need resistance at all. Just connect wires as per the instruction.

Here you need two steps before starting a matrix connection with Arduino as per the 788bs datasheet matrix pins connection given.

1- 8x8 led matrix code generator


This will help to generate code for your matrix. Just draw anything for the matrix, copy the code, and use it in your program. You can draw different symbols, shapes, or words.

2- Add matrix library with Arduino Ide


​​​​​​​First, add the 8x8 led dot matrix library in Arduino Ide. hereafter, the library manager in Arduino Ide will run the code. It will display in the matrix.

The connection between Led matrix and Arduino UNO


Matrix Rows Pins #  ------------ Arduino Uno output Pins #
                   Pin #  1  ---------- 2 
                              2  ---------- 3 
                              3  ---------- 4 
                              4  ---------- 5 
                              5  ---------- 6 
                              6  ---------- 7 
                              7  ---------- 8 
                              8  ---------- 9 

Matrix Column: Pins #  ----------------- Arduino Uno output Pins #
                       Pin # 1  ------------ 10 
                                 2  ------------  11
                                  3  ------------ 12
                                   4  ------------  13
                                   5  ------------  A1
                                   6  ------------ A2
                                   7  ------------  A3
                                   8  ------------ A4
 

Comments

Popular posts from this blog

Arduino UNO Pinout (with Diagram)and board brief details

Arduino UNO Pinout and Board description Arduino Uno is an electronic experimental board. The Atmega328P Microcontroller is the main chip of the Arduino board. It is an open-source electronics platform, helpful to create electronics projects. I will explain the description of the  Arduino UNO Pins  and the board in the post.  Arduino Uno  is a standard board of the company, even though other boards e, g. micro, Nano, mega, Leonardo, 101. Due and Yen. Arduino also manufactured IoT (internet of things), Bluetooth, GSM/3G, Wi-Fi, and motion sensor boards. Arduino Uno board The Atmega328P Microcontroller is an 8bit with 32k byte internal flash memory. To program the main chip, a 16 MHz crystal is part of the board. The Arduino board requires only 5V DC to operate.                                                                       FIG-A Arduino Uno pins detail Arduino UNO board has analog/digital (PWM) pins. These pins could be GPIO or used for specific signals.   Vin Pin It uses Vin pin

Getting started with arduino uno for led blinking

What is Arduino Uno? The Arduino Uno is an electronic board that has  the ATMEGA 328P microcontroller. It has analog and digital input/output pins. We use it in simple projects, e.g. led lights and also complicated robotics projects.  Let's  get started with  Arduino  to run our first program. As we use it with different machines e, g. Windows, Apple, Ubuntu, mobile, etc.  as usual Arduino programming is difficult for newbies, but if you get in touch with this Arduino tutorial, it could be helpful. Getting started with Arduino Here, I will discuss especially the Windows operating system and also a little another operating system. First, I will discuss how to interface with the Windows operating system. Requirements for Arduino setup Arduino Uno            Amazon USB Cable A-B male (usually used for printers)   Amazon Laptop/Desktop with Windows 7, 8, 10 The IDE Software Led (can choose any color)    Amazon Resistance (value of 230 Ω) Amazon   Setup Arduino ide Get the latest vers

Arduino Nano pins Tutorial with Diagram and Details

Arduino Nano pins details with schematic Arduino Nano comes in small size and has the same function as Arduino Duemilanove. Nano contains Atmega328P Microcontroller as the main chip. Nano uses a small jack for the DC power supply.  For the USB interface and power, it uses a mini USB type B cable.   It is an electronic experimental board and being small in size,  we could install it easily in our projects . It has more analog pins than Uno, so very helpful to create controlling type electronics projects . Arduino Nano Board Details If you look at the Nano board Arduino Nano Pins the Atmega328P micro-controller is the major component of the board. The board has four LEDs for different identification. For ON, RX for receiving data, TX for transmitting data, and L for loading the program. Arduino Nano pin Diagram Atmega328P Datasheet To learn Arduino Nano pin out it is necessary to understand the datasheet of the Atmega328P   Microcontroller . We can download the datasheet from the li

Arduino Books for beginners and experts

Arduino Books for absolute beginners Arduino books are very helpful to learn about the smart Arduino board . These books provide the basic idea to start a project with basic knowledge of electronics. Some of these books contain codes for the projects, including pictures. These Arduino books for beginners and for experts who come up with a deep knowledge of electronic components. Programming Arduino: Getting Started with Sketches Edition - 2nd  Writer - Simon Monk . Amazon Kindle books Edition 191 Pages The Arduino programming book is using sketches to program the Arduino. It is very easy to use this book. It contains a thoroughly updated manual, step by step, on how you can speed program all Arduino models. This Arduino tutorial book gives a good understanding of Arduino regards hardware fundamentals. It has a brief description of micro-controller details, components and chips mounted on the Arduino board . Instruction about setting up the software. Introduction of Arduino power-up