Arduino-compatible driver for controlling HT16K33 LED matrix ICs using I2C. This library is designed for 8x16 LED matrix control and is compatible with SBK_BarDrive if used, but can also be used standalone.

• HT16K33 driver for 8x16 LED matrices or bar meters
• I2C-based control with brightness control and display clearing
• Compatible with SBK_BarDrive (optional)
• Efficient buffer-based updates
• Supports up to 8 HT16K33 devices on the I2C bus
• Independent brightness, address, and row configuration per device

1. Download or clone this repository:

   git clone https://github.com/sbarabe/SBK_HT16K33.git

2. Copy it to your Arduino libraries/ folder

#include <Wire.h>
#include <SBK_HT16K33.h>

SBK_HT16K33 ht(2); // support for 2 devices

void setup() {
  Wire.begin();
  ht.setAddress(0, 0x70); // optional: override default address for device 1
  ht.setAddress(1, 0x71); // optional: override default address for device 1
  ht.setDriverRows(0,8);
  ht.setDriverRows(1,8);
  ht.begin();
  ht.setBrightness(0, 10);
  ht.setBrightness(1, 5);
  ht.clear();

  // Light up diagonals on both devices
  for (uint8_t i = 0; i < 8; i++) {
    ht.setLed(0, i, i, true);         // Device 0
    ht.setLed(1, i, 7 - i, true);     // Device 1
  }

  ht.show();
}

void loop() {
  // Nothing here for now
}

Use setDriverRows() to match your HT16K33 chip configuration.

To use this library with SBK_BarDrive:

• Include <SBK_HT16K33.h> before including SBK_BarDrive.h
• Then create a SBK_BarDrive<SBK_HT16K33> instance as shown in SBK_BarDrive examples.

This library is released under the MIT License. See the LICENSE file for full details.

• Adapted from MikeS11's ProtonPack HT16K33 library
• Developed and maintained by Samuel Barabé (Smart Builds & Kits)