KS0336 Keyestudio 8*8 Dot Matrix Module 3PCS: Difference between revisions

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[[image:KS0336.png|thumb|600px|right|Keyestudio PIR Motion Sensor 3PCS]]
[[image:KS0336.png|thumb|600px|right|Keyestudio 8*8 Dot Matrix Module 3PCS]]
 
 
 


==Introduction==
==Introduction==
A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 'multiplexed' - to control 64 LEDs you need 16 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you, but there's a lot of wiring to set up and they take up a ton of space. After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these lovely LED matrix backpacks come in. <br>
A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 'multiplexed' - to control 64 LEDs you need 16 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you, but there's a lot of wiring to set up and they take up a ton of space. After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these lovely LED matrix backpacks come in. <br>
The matrices use the constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface. These 1.2" matrix backpacks come with three address-selection jumpers so you can connect up to eight 1.2" 8x8's together (or a combination, such as four 1.2" 8x8's and four 7-segments, etc) on a single I2C bus.
The matrices use the constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface.
 


== Features ==
== Features ==
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==Pinout==
==Pinout==
 
<br>[[Image:Pinouts.jpg|600px|frameless]]<br>
 


==Wire it Up==
==Wire it Up==
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== Resources ==
== Resources ==
* [https://drive.google.com/open?id=1GfYoZ3VYQSjwv8eHQ3ZQO_gFHRzMjn71  You can click here to download the datasheet]


* [https://drive.google.com/open?id=1FUTIwsfGdxTXXgYDGxI7U2VoP0g3G-2L    Click here to download the code libraries]
* [https://fs.keyestudio.com/KS0336  download libraries]
 
 
 
 
<br>


== Buy From ==
== Buy From ==


* '''Official Website:'''  http://www.keyestudio.com/ks0336.html
*[https://www.keyestudio.com/3pcs-keyestudio-red-color-common-cathode-i2c-88-led-dot-matrix-module-ht16k33-for-arduino-uno-r3-p0361-p0361.html   '''Official Website''' ]


* [https://www.amazon.com/dp/B0179AGI9K  '''From Amazon''']
* [https://www.amazon.com/dp/B0179AGI9K  '''From Amazon''']
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[[category:Module]]
[[category: Module]]

Latest revision as of 15:54, 9 March 2021

Keyestudio 8*8 Dot Matrix Module 3PCS

Introduction

A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 'multiplexed' - to control 64 LEDs you need 16 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you, but there's a lot of wiring to set up and they take up a ton of space. After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these lovely LED matrix backpacks come in.
The matrices use the constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface.

Features

  • 8 rows and 8 cols LED matrix
  • Driven by HT16K33 chip
  • Access to I2C communication pins
  • Occupy less IO ports of microcontrollers
  • Easy connection and available for more experiment extensions


Parameters

  • Input voltage: 5V
  • Rated input frequency: 400KHZ
  • Input power: 2.5W
  • Input current: 500mA


Pinout


Pinouts.jpg

Wire it Up

Connect the SCL pin to Analog A5, SDA pin to Analog A4 port; Connect VCC pin to 5V port, GND pin to GND.
KS0064.jpg


Sample Code

Below is an example code, you can upload it to Arduino IDE.

#include <Wire.h>
#include "Adafruit_LEDBackpack.h"
#include "Adafruit_GFX.h"
#ifndef _BV
#define _BV(bit) (1<<(bit))
#endif
Adafruit_LEDBackpack matrix = Adafruit_LEDBackpack();
uint8_t counter = 0;
void setup() {
  Serial.begin(9600);
  Serial.println("HT16K33 test");
  matrix.begin(0x70);  // pass in the address
}
void loop() {
  // paint one LED per row. The HT16K33 internal memory looks like
  // a 8x16 bit matrix (8 rows, 16 columns)
  for (uint8_t i=0; i<8; i++) {
// draw a diagonal row of pixels

    matrix.displaybuffer[i] = _BV((counter+i) % 16) | _BV((counter+i+8) % 16)  ;
  }
  // write the changes we just made to the display
  matrix.writeDisplay();
  delay(100);
 counter++;
  if (counter >= 16) counter = 0;  
}

Note: before upload the code, you should place the library inside Arduino libraries. Or else fail to compile it.

You can download the code libraries from the link below:
https://drive.google.com/open?id=1FUTIwsfGdxTXXgYDGxI7U2VoP0g3G-2L


Example Result

Done wiring and powered up, upload well the code to UNO board, you will see the dot matrix display the image shown below.
KS0336-2.jpg


Packaging Included

Keyestudio 8x8 Dot Matrix Module * 3PCS
KS0336-3.jpg


Resources




Buy From