Meadow.Foundation.ICs.IOExpanders.Ht16k33

Ht16k33
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

The HT16K33 is an LED driver and key scanner. It can be used to drive up to 128 leds and is often found pre-assembled with 14-segment led displays. The HT16K33 is controlled via I2C.

Code Example

Ht16k33 ht16k33;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");
    ht16k33 = new Ht16k33(Device.CreateI2cBus());

    return base.Initialize();
}

public override async Task Run()
{
    int index = 0;
    bool on = true;

    while (true)
    {
        ht16k33.SetLed((byte)index, on);
        ht16k33.UpdateDisplay();
        index++;

        if (index >= 128)
        {
            index = 0;
            on = !on;
        }

        await Task.Delay(100);
    }
}

Sample project(s) available on GitHub

Wiring Example

To wire a TM1637 to your Meadow board, connect the following:

TM1637	Meadow Pin
GND	GND
VCC	3V3
SCL	D08 (SCL Pin)
SDA	D07 (SDA Pin)

Code Example​

Wiring Example​

Code Example

Wiring Example