8x8 Matrix All On/Off

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ahouriet
 
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8x8 Matrix All On/Off

Post by ahouriet »

I have an 8x8 LED matrix working with the HT16K33 Breakout (#1427). Is there a way that I control the matrix to just turn it all on or off with one of the digital output pins?

I need to be able to blink two different matrixes on/off with variable timing, sometimes pretty quickly. I already have the code working to do the timing/blinking for to output pins controlling single LEDs. That works well.

Ideally I'd like to wire up those 2 output pins in a way that would allow me to blink the entire matrix instead of the single LED. I"m imagining using the I2C bus to send out the all on data, then have an secondary way to blink it with an output pin.

Possible?

Thanks,
Andy

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adafruit_support_rick
 
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Re: 8x8 Matrix All On/Off

Post by adafruit_support_rick »

You can try the setBrightness or blinkRate commands in the library. The setBrightness range is from 0 to 15.

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adafruit_support_mike
 
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Re: 8x8 Matrix All On/Off

Post by adafruit_support_mike »

There's also a 'clear()' function that zeros the display buffer.

Using the backpack hands control over to the driver chip, and there's no general enable/disable pin on the HTK1633.

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