This project contains multipurpose LED display drivers and binding implementations for concrete display configurations.
The HT16K33 is LED display driver that supports multiple LED configurations and I2C communication.
Adafruit sells multiple display backpacks built upon this driver:
Adafruit LED / SEGMENTED category
Large4Digit7SegmentDisplay is a binding that supports the Adafruit 1.2" 4-Digit 7-Segment Display w/I2C Backpack that comes in 3 colors:
Adafruit 1.2" 4-Digit 7-Segment Display w/I2C Backpack - Yellow
Adafruit 1.2" 4-Digit 7-Segment Display w/I2C Backpack - Green
Adafruit 1.2" 4-Digit 7-Segment Display w/I2C Backpack - Red
More information on wiring can be found on the respective product pages.
// Initialize display (busId = 1 for Raspberry Pi 2 & 3)
var display = new Large4Digit7SegmentDisplay(I2cDevice.Create(new I2cConnectionSettings(busId: 1, address: Ht16k33.DefaultI2cAddress));
// Set max brightness (automatically turns on display)
display.Brightness = display.MaxBrightness;
// Write time to the display
display.Write(DateTime.Now.ToString("H:mm").PadLeft(5));
// Wait 5 seconds
Thread.Sleep(5000);
// Turn on buffering
display.BufferingEnabled = true;
// Write -42°C to display using "decimal point" between 3rd and 4th digit as the ° character
display.Write("-42C");
display.Dots = Dot.DecimalPoint;
// Send buffer to the device
display.Flush();
// Dispose display object (the device itself will not be turned off until powered down)
display.Dispose();