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--- projects:a4sim:hardware:ht16k33ledmodule:start [2019/10/18 18:23]
admin
+++ projects:a4sim:hardware:ht16k33ledmodule:start [2020/02/22 17:07] (current)
admin ↷ Links adapted because of a move operation
@@ Line 5: / Line 5: @@
 Requires Adafruit driver, which includes I2C sending. **Note:** This has to be run from an Arduino.
-[[lowdependencyexample|Low Dependency Example]]
+  * [[lowdependencyexample|Low Dependency Example]]
+  * https://www.partsnotincluded.com/electronics/controlling-led-matrix-with-the-ht16k33/
 [[https://github.com/adafruit/Adafruit_LED_Backpack/blob/master/Adafruit_LEDBackpack.h|Adafruit_LEDBackpack docs]]
+{{ a4sim:hardware:ht16k33ledmodule:ht16k33v120.pdf |Holtek Datasheet for HT16K33}}
 ==== Example code ====
   * [[arduinoadafruitexample|Adafruit Arduino Example]]
-<code c++>
-/***************************************************
-  This is a library for our I2C LED Backpacks
-  Designed specifically to work with the Adafruit LED Matrix backpacks
-  ----> http://www.adafruit.com/products/872
-  ----> http://www.adafruit.com/products/871
-  ----> http://www.adafruit.com/products/870
-  These displays use I2C to communicate, 2 pins are required to
-  interface. There are multiple selectable I2C addresses. For backpacks
-  with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks
-  with 3 Address Select pins: 0x70 thru 0x77
-  Adafruit invests time and resources providing this open source code,
-  please support Adafruit and open-source hardware by purchasing
-  products from Adafruit!
-  Written by Limor Fried/Ladyada for Adafruit Industries.
-  BSD license, all text above must be included in any redistribution
- ****************************************************/
-#include <Wire.h>
-#include <Adafruit_GFX.h>
-#include "Adafruit_LEDBackpack.h"
-Adafruit_8x8matrix matrix = Adafruit_8x8matrix();
-void setup() {
-  Serial.begin(9600);
-  Serial.println("8x8 LED Matrix Test");
-  matrix.begin(0x70);  // pass in the address
-}
-static const uint8_t PROGMEM
-  smile_bmp[] =
-  { B00111100,
-    B01000010,
-    B10100101,
-    B10000001,
-    B10100101,
-    B10011001,
-    B01000010,
-    B00111100 },
-  neutral_bmp[] =
-  { B00111100,
-    B01000010,
-    B10100101,
-    B10000001,
-    B10111101,
-    B10000001,
-    B01000010,
-    B00111100 },
-  frown_bmp[] =
-  { B00111100,
-    B01000010,
-    B10100101,
-    B10000001,
-    B10011001,
-    B10100101,
-    B01000010,
-    B00111100 };
-void loop() {
-  matrix.clear();
-  matrix.drawBitmap(0, 0, smile_bmp, 8, 8, LED_ON);
-  matrix.writeDisplay();
-  delay(500);
-  matrix.clear();
-  matrix.drawBitmap(0, 0, neutral_bmp, 8, 8, LED_ON);
-  matrix.writeDisplay();
-  delay(500);
-  matrix.clear();
-  matrix.drawBitmap(0, 0, frown_bmp, 8, 8, LED_ON);
-  matrix.writeDisplay();
-  delay(500);
-  matrix.clear();      // clear display
-  matrix.drawPixel(0, 0, LED_ON);
-  matrix.writeDisplay();  // write the changes we just made to the display
-  delay(500);
-  matrix.clear();
-  matrix.drawLine(0,0, 7,7, LED_ON);
-  matrix.writeDisplay();  // write the changes we just made to the display
-  delay(500);
-  matrix.clear();
-  matrix.drawRect(0,0, 8,8, LED_ON);
-  matrix.fillRect(2,2, 4,4, LED_ON);
-  matrix.writeDisplay();  // write the changes we just made to the display
-  delay(500);
-  matrix.clear();
-  matrix.drawCircle(3,3, 3, LED_ON);
-  matrix.writeDisplay();  // write the changes we just made to the display
-  delay(500);
-  matrix.setTextSize(1);
-  matrix.setTextWrap(false);  // we dont want text to wrap so it scrolls nicely
-  matrix.setTextColor(LED_ON);
-  for (int8_t x=0; x>=-36; x--) {
-    matrix.clear();
-    matrix.setCursor(x,0);
-    matrix.print("Hello");
-    matrix.writeDisplay();
-    delay(100);
-  }
-  matrix.setRotation(3);
-  for (int8_t x=7; x>=-36; x--) {
-    matrix.clear();
-    matrix.setCursor(x,0);
-    matrix.print("World");
-    matrix.writeDisplay();
-    delay(100);
-  }
-  matrix.setRotation(0);
-}
-</code>

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