Keyestudio ARDUINO maker learning kit Manual page 34

Sample program
//////////////////////////////////////////////////////////
int BASE = 2 ; // the I/O pin for the first LED
int NUM = 6; // number of LEDs
void setup()
{
for (int i = BASE; i < BASE + NUM; i ++)
{
pinMode(i, OUTPUT);
}
}
void loop()
{
for (int i = BASE; i < BASE + NUM; i ++)
{
digitalWrite(i, LOW);
delay(200);
}
for (int i = BASE; i < BASE + NUM; i ++)
keyestudio
// set I/O pins as output
// set I/O pins as "low", turn off LEDs one by one.
// delay
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