App Lab Lesson 16 Level 6b U6L16.6.b

CS Discoveries
1

//1) Create two LED variables on pins “A0” and “A7”
var led1 = createLed(“A0”);
var led2 = createLed(“A7”);

//2) When the toggleSwitch is closed:
//turn on the colorLEDs and turn off the external LEDs
onBoardEvent(toggleSwitch, “close”, function() {
//Turn on the colorLEDs
colorLeds[0].on();
colorLeds[1].on();
colorLeds[2].on();
colorLeds[3].on();
colorLeds[4].on();
colorLeds[5].on();
colorLeds[6].on();
colorLeds[7].on();
colorLeds[8].on();
colorLeds[9].on();
//turn off the external LEDs
led1.off();
led2.off();
});

//3) When the toggleSwitch is open:
//turn off the colorLEDs and turn on the external LEDs
onBoardEvent(toggleSwitch, “open”, function() {
//Turn off the colorLEDs
colorLeds[0].off();
colorLeds[1].off();
colorLeds[2].off();
colorLeds[3].off();
colorLeds[4].off();
colorLeds[5].off();
colorLeds[6].off();
colorLeds[7].off();
colorLeds[8].off();
colorLeds[9].off();
//turn off the external LEDs
led1.on();
led2.on();
});

This is the teacher example for this level but code does not work with the Circuit Playground Express.

A7 seems to be a reserved pin and the other error is that the code does not cycle the internal leds on while the external leds are off and vice versa. Does anyone have a fix for this level? I can’t seem to code it myself properly.

2

You may want to flag this on that page as a bug by using the help button at the top of the page where the activity is located. This will forward the message to those who can look more closely at the problem.

It’s possible that the code doesn’t work with all versions of the circuit playground that have been released since the code was created.

Mike