Ks0139 keyestudio EASY plug I2C 8x8 LED Matrix: Difference between revisions
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<pre> | <pre> | ||
#include <Wire.h> | #include <Wire.h> | ||
#include "Adafruit_LEDBackpack.h" | #include "Adafruit_LEDBackpack.h" | ||
#include "Adafruit_GFX.h" | #include "Adafruit_GFX.h" | ||
#define _BV(bit) (1<<(bit)) | |||
#ifndef _BV | |||
#define _BV(bit) (1<<(bit)) | |||
#endif | #endif | ||
Adafruit_LEDBackpack matrix = Adafruit_LEDBackpack(); | Adafruit_LEDBackpack matrix = Adafruit_LEDBackpack(); | ||
uint8_t counter = 0; | uint8_t counter = 0; | ||
void setup() { | void setup() { | ||
Serial.begin(9600); | Serial.begin(9600); | ||
Serial.println("HT16K33 test"); | Serial.println("HT16K33 test"); | ||
matrix.begin(0x70); // pass in the address | matrix.begin(0x70); // pass in the address | ||
} | } | ||
void loop() { | void loop() { | ||
// paint one LED per row. The HT16K33 internal memory looks like | // paint one LED per row. The HT16K33 internal memory looks like | ||
Revision as of 14:17, 16 March 2018
EASY plug I2C 8x8 LED Matrix
Introduction
What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix. This matrix uses a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface.
Note: this module needs to be used together with EASY plug control board.
Specification
- Interface: Easy plug
- Supply voltage: 4.5V-5.5V
- Maximum display: 16*8
- Size: 53*32mm
- Weight: 6g
Connection Diagram
Sample Code
Libraries Download：[1]
#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;
}
Resources
PDF:
https://drive.google.com/open?id=1eQ_E19XePe33VxLSHafZr_5N6ff0NGXW
Code Libraries Download:
https://drive.google.com/open?id=133xsJC5jvIkjZKpvcl5yu0Wp24m4_6kM
Get One Now
Official Website
http://www.keyestudio.com/keyestudio-easy-plug-iic-i2c-8-8-le-d-dot-matrix-display-for-arduino.html