5,710
edits
Changes
→plain multiplexer
draws a solid block of lights
<pre>
/*
* Multiplexer
*
* Driving a multiplexed 5X7 LED display.
* 1 clock signal drives a decade counter
* to select lines 1-7. 1 reset pin.
* 5 data lines drive columns 1-5.
*/
int clockPin = 8; // CP input (pin 14) on 4017 decade counter.
int resetPin = 9; // MR (pin 15) on 4017.
void setup() // run once, when the sketch starts
{
{
for(int row=0;row<7;row++)
digitalWrite(row, img[col+row*5]HIGH);
delay(1);
digitalWrite(resetPin, LOW);
}
</pre>
