Lesson 7 of 7

Draw on the LED matrix

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#include "Arduino_LED_Matrix.h" // Draw a heart on the 12 x 8 matrix and make it beat ArduinoLEDMatrix matrix; uint8_t heart[8][12] = { { 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0 }, { 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1 }, { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 }, { 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 }, { 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0 }, { 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0 } }; void setup() { Serial.begin(115200); matrix.begin(); // starts the timer that scans the LEDs Serial.println("Matrix ready"); } void loop() { matrix.renderBitmap(heart, 8, 12); // 8 rows of 12 columns: 1 is on delay(500); matrix.clear(); delay(500); }

Stopped · Your code isn't running yet. Until you press Run, the board runs the program already on it.

Nothing printed yet. Press Run.

UNO R4 WiFi only: 96 red LEDs in a 12 x 8 grid. Draw a heart as an 8 x 12 array of 0s and 1s and make it beat.

The heart beats on the board in the figure
Edit the array to draw your own picture
Change the beat and run again

Wire it in

Sensors and actuators this board drives, with the real connections.

All 6 parts on the Arduino UNO R4 page

Draw on the LED matrix

Try it yourself

Serial monitor

Checks

Break it

Parameters

Wire it in

Draw on the LED matrix

Try it yourself

Serial monitor

Checks

Break it

Parameters

Wire it in