Buzzer & RGB LED

# Add the libraries you need
import buzzer

# Give your pins easy-to-remember names
i1 = set_name("bell_button")
i2 = set_name("party_button")
o1 = set_name("speaker")

# ===== Musical doorbell =====

# This code block executes only once
setup:
    bell_button = set_input(push_button, active_low)
    party_button = set_input(push_button, active_low)
    speaker = set_output(buzzer, passive)

# This code block executes forever
loop:
    if bell_button == ON:  # when bell_button is ON
        buzzer_play(speaker, "door_bell")  # play the "door_bell" tone on the buzzer (speaker) — the next line waits until it ends
    elif party_button == ON:  # otherwise, when party_button is ON
        buzzer_play(speaker, "happy_birthday")  # play the "happy_birthday" tone on the buzzer (speaker) — the next line waits until it ends

A musical doorbell on a passive buzzer named speaker: bell_button plays the ding-dong door_bell, party_button plays Happy Birthday. Because buzzer_play waits until the sound ends, one press plays the whole tone.

# Add the libraries you need
import rgb_three

# Give your pins easy-to-remember names
i1 = set_name("mode_button")
i2 = set_name("knob")
o1 = set_name("lamp")

# ===== Mood lamp =====

# This code block executes only once
setup:
    mode_button = set_input(push_button, active_low)
    knob = set_input(potentiometer, adc)
    lamp = set_output(rgb_led, 3)

# This code block executes forever
loop:
    if mode_button == ON:  # when mode_button is ON
        rgb_flip(lamp, 3, "warm_white")  # press: LED 3 reading light on / off
        wait(300)  # pause here for 300 milliseconds before continuing
    k = analog_read(knob)  # 0 to 100
    if k < 10:  # when k < 10
        rgb_breathe(lamp, 1, "purple", 3000)  # calm breathing
    elif k < 50:  # otherwise, when k < 50
        rgb_color(lamp, 1, "cyan", k * 2)  # brighter as you turn
    else:  # otherwise
        rgb_hex_color(lamp, 1, 255, 255 - k * 2, 0)  # orange to red
    wait(100)  # pause here for 100 milliseconds before continuing

A mood lamp on a 3-LED board. The knob chooses the mood for LED 1: breathing purple at the bottom, cyan that gets brighter in the middle, then orange to red mixed with rgb_hex_color. Each press of mode_button flips LED 3 on as a warm white reading light, then off again.

# Add the libraries you need
import rgb_strip

# Give your pins easy-to-remember names
o1 = set_name("strip")

# ===== Festival light show =====

# This code block executes only once
setup:
    strip = set_output(rgb_led, 8)

# This code block executes forever
loop:
    rgb_wipe(strip, all, "orange", 60)  # fill up, one LED at a time
    wait(2000)  # pause here for 2000 milliseconds before continuing
    rgb_chase(strip, all, "rainbow", 80)  # a moving rainbow
    wait(4000)  # pause here for 4000 milliseconds before continuing
    rgb_twinkle(strip, all, "warm_white", 120)  # fairy lights
    wait(4000)  # pause here for 4000 milliseconds before continuing
    rgb_swap(strip, all, "red", "blue", 300)  # police lights
    wait(4000)  # pause here for 4000 milliseconds before continuing
    rgb_blink(strip, all, "random", 300)  # a new colour every blink
    wait(4000)  # pause here for 4000 milliseconds before continuing

A festival light show on an 8-LED strip: wipe, chase, twinkle, swap and blink. Each effect runs by itself, so the program only waits a few seconds before starting the next one.

# Add the libraries you need
import dht11
import ultrasonic
import rgb_strip
import rgb_single

# Give your pins easy-to-remember names
i1 = set_name("weather")
o1 = set_name("meter")
o2 = set_name("heat_lamp")

# ===== Heat and level meter =====

# This code block executes only once
setup:
    weather = set_input(dht11)
    i3 = set_input(ultrasonic_trig)  # cannot be changed
    i4 = set_input(ultrasonic_echo)  # cannot be changed
    meter = set_output(rgb_led, 8)
    heat_lamp = set_output(rgb_led, 1)

# This code block executes forever
loop:
    d = distance()  # set d to distance()
    if d < 0:  # when d < 0
        d = 100  # nothing in range: treat it as far away
    rgb_bar(meter, all, "rainbow", 100 - d, 100)  # more LEDs as you come closer
    t = dht_temperature(weather)  # set t to dht_temperature(weather)
    rgb_heat(heat_lamp, 1, "red", t, 20, 40)  # blue when cool, red when hot
    wait(500)  # pause here for 500 milliseconds before continuing

Two meters (TinkerPy Mega): the 8-LED meter strip fills up as something comes closer to the ultrasonic sensor, and the 1-LED heat_lamp turns from blue (20 °C) to red (40 °C) with the DHT11 on i1.