        ██ In this workshop...

           1. General terminology / Overview

           2. Setting up Thonny (software)

           3. Setting up the Pi

           4. Blinking the onboard LED

                                                                                            6 / 110

        ██ In this workshop...

           1. General terminology / Overview

           2. Setting up Thonny (software)

           3. Setting up the Pi

           4. Blinking the onboard LED

           5. wiring an LED

                                                                                            7 / 110

        ██ In this workshop...

           1. General terminology / Overview

           2. Setting up Thonny (software)

           3. Setting up the Pi

           4. Blinking the onboard LED

           5. wiring an LED

           6. wiring a button

                                                                                            8 / 110

        ██ In this workshop...

           1. General terminology / Overview

           2. Setting up Thonny (software)

           3. Setting up the Pi

           4. Blinking the onboard LED

           5. wiring an LED

           6. wiring a button

                                                                                            9 / 110

        ██ Slides

                                                                                           10 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

                                                                                           11 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

                                                                                           12 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

           3. 2025-2026

                                                                                           13 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

           3. 2025-2026

           4. compsoc

                                                                                           14 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

           3. 2025-2026

           4. compsoc

           5. raspberry-pi-workshop-ii.html

                                                                                           15 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

           3. 2025-2026

           4. compsoc

           5. raspberry-pi-workshop-ii.html

           6. https://public.skynet.ie/slides/2025-2026/compsoc/raspberry-pi-workshop.html

                                                                                           16 / 110

        ██ Slides

           1. Go to https://public.skynet.ie

           2. slides

           3. 2025-2026

           4. compsoc

           5. raspberry-pi-workshop-ii.html

           6. https://public.skynet.ie/slides/2025-2026/compsoc/raspberry-pi-workshop.html

                                                                                           17 / 110

        ██ What is a Pico?

        The Raspberry PI pico 2W is a wireless

        enabled version of the PI pico 2

        microcontroller.

           •  Features:

              ◦  RP2350 Microcontroller

                 ▪  Dual core 150MHz

              ◦  4MB flash memory

              ◦  Bluetooth LE, Bluetooth

                 classic

              ◦  23 GPIO pins 3.3V

                                                                                           18 / 110

        ██ What is GPIO?

        GPIO: (General Purpose Input-Output):

        A type of digital (meaing capable of

        binary states) pin that can function

        as an input sensor, out ouput provider

                                                                                           19 / 110

        ██ PI setup / Thonny install

                                                                                           20 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

                                                                                           21 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

           2. Plug in your pico zero

                                                                                           22 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

           2. Plug in your pico zero

           3. Go to run -> interpreter -> select micropython

                                                                                           23 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

           2. Plug in your pico zero

           3. Go to run -> interpreter -> select micropython

              ◦  Tools -> manage packages -> install picozero If this fails, follow steps on

                 proceeding slide

                                                                                           24 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

           2. Plug in your pico zero

           3. Go to run -> interpreter -> select micropython

              ◦  Tools -> manage packages -> install picozero If this fails, follow steps on

                 proceeding slide

           4. Sit tight!

                                                                                           25 / 110

        ██ PI setup / Thonny install

           1. Go to: https://thonny.org/ and install the software

           2. Plug in your pico zero

           3. Go to run -> interpreter -> select micropython

              ◦  Tools -> manage packages -> install picozero If this fails, follow steps on

                 proceeding slide

           4. Sit tight!

                                                                                           26 / 110

        ██ Installing micropython firmware

                                                                                           27 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

                                                                                           28 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

                                                                                           29 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

           2. Plug in your pi pico while holding the "bootsel" button

                                                                                           30 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

           2. Plug in your pi pico while holding the "bootsel" button

              ◦  This enables bootloader mode

                                                                                           31 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

           2. Plug in your pi pico while holding the "bootsel" button

              ◦  This enables bootloader mode

           3. Your Pi should show up as a standard USB storage device on your machine

                                                                                           32 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

           2. Plug in your pi pico while holding the "bootsel" button

              ◦  This enables bootloader mode

           3. Your Pi should show up as a standard USB storage device on your machine

           4. Drag and drop the downloaded .uf2 file onto the root of the raspberry pi

                                                                                           33 / 110

        ██ Installing micropython firmware

           1. Download firmware (latest) from https://micropython.org/download/RPI_PICO2_W/

              ◦  https://micropython.org/resources/firmware/RPI_PICO2_W-20250911-v1.26.1.uf2

           2. Plug in your pi pico while holding the "bootsel" button

              ◦  This enables bootloader mode

           3. Your Pi should show up as a standard USB storage device on your machine

           4. Drag and drop the downloaded .uf2 file onto the root of the raspberry pi

                                                                                           34 / 110

        ██ Manual install of picozero (if necessary)

                                                                                           35 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

                                                                                           36 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

                                                                                           37 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

           3. Plug in your Pi Pico while holding the bootloader button

                                                                                           38 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

           3. Plug in your Pi Pico while holding the bootloader button

           4. In thonny, select View -> files, navigate to the directory where you

              downloaded picozero.py.

                                                                                           39 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

           3. Plug in your Pi Pico while holding the bootloader button

           4. In thonny, select View -> files, navigate to the directory where you

              downloaded picozero.py.

              ◦  Left Click -> upload to /

                                                                                           40 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

           3. Plug in your Pi Pico while holding the bootloader button

           4. In thonny, select View -> files, navigate to the directory where you

              downloaded picozero.py.

              ◦  Left Click -> upload to /

           5. Youve uploaded the picozero firmware!

                                                                                           41 / 110

        ██ Manual install of picozero (if necessary)

           1. Go to the pico zero github (https://github.com/RaspberryPiFoundation/picozero)

           2. Download the "Picozero.py" file

           3. Plug in your Pi Pico while holding the bootloader button

           4. In thonny, select View -> files, navigate to the directory where you

              downloaded picozero.py.

              ◦  Left Click -> upload to /

           5. Youve uploaded the picozero firmware!

                                                                                           42 / 110

        ██ Quick note!

                                                                                           43 / 110

        ██ Quick note!

           •  Whilst Thonny may seem like any other interpereter, when your using it for

              something like a  PI PICO, all code is running on the PI itself, thonny is

              only acting as a middle-man.

                                                                                           44 / 110

        ██ Quick note!

           •  Whilst Thonny may seem like any other interpereter, when your using it for

              something like a  PI PICO, all code is running on the PI itself, thonny is

              only acting as a middle-man.

           •  Code can (and should) be saved locally onto the pi, allowing it to run without

              being connected to your laptop or any other computer

                                                                                           45 / 110

        ██ Quick note!

           •  Whilst Thonny may seem like any other interpereter, when your using it for

              something like a  PI PICO, all code is running on the PI itself, thonny is

              only acting as a middle-man.

           •  Code can (and should) be saved locally onto the pi, allowing it to run without

              being connected to your laptop or any other computer

           •  The terminal shown in thonny is only a passthrough of the terminal within the

              pico

                                                                                           46 / 110

        ██ Quick note!

           •  Whilst Thonny may seem like any other interpereter, when your using it for

              something like a  PI PICO, all code is running on the PI itself, thonny is

              only acting as a middle-man.

           •  Code can (and should) be saved locally onto the pi, allowing it to run without

              being connected to your laptop or any other computer

           •  The terminal shown in thonny is only a passthrough of the terminal within the

              pico

                                                                                           47 / 110

        ██ Writing your first script!

                                                                                           48 / 110

        ██ Writing your first script!

           1. In this script we will simply blink the onboard LED of the Pico

                                                                                           49 / 110

        ██ Writing your first script!

           1. In this script we will simply blink the onboard LED of the Pico

           2. Open Thonny, and open a new project.

                                                                                           50 / 110

        ██ Writing your first script!

           1. In this script we will simply blink the onboard LED of the Pico

           2. Open Thonny, and open a new project.

           3. Type this script out:

                                                                                           51 / 110

        ██ Writing your first script!

           1. In this script we will simply blink the onboard LED of the Pico

           2. Open Thonny, and open a new project.

           3. Type this script out:

                           from picozero import pico_led

                           pico_led.on()

                                                                                           52 / 110

        ██ Blinking the onboard LED

                                                                                           53 / 110

        ██ Blinking the onboard LED

           1. Alright! Now onto something (slightly) more complicated.

                                                                                           54 / 110

        ██ Blinking the onboard LED

           1. Alright! Now onto something (slightly) more complicated.

           2. Write out this script:

                                                                                           55 / 110

        ██ Blinking the onboard LED

           1. Alright! Now onto something (slightly) more complicated.

           2. Write out this script:

                           from picozero import pico_led

                           from time import sleep

                           while True:

                               pico_led.on()

                               sleep(5)

                               pico_led.off()

                               sleep(5)

                                                                                           56 / 110

        ██ Building Circuits!

                                                                                           57 / 110

        ██ Building Circuits!

           •  Next, we will assemble a simple circuit consisting of the pico, and LED, and a

              resistor.

                                                                                           58 / 110

        ██ Building Circuits!

           •  Next, we will assemble a simple circuit consisting of the pico, and LED, and a

              resistor.

        add photo of circuit or smth

                                                                                           59 / 110

        ██ What is a resistor?

                                                                                           60 / 110

        ██ What is a resistor?

           •  The simple resistor is one of

              the most common electrical

              components on earth.

                                                                                           61 / 110

        ██ What is a resistor?

           •  The simple resistor is one of

              the most common electrical

              components on earth.

           •  Resistors limit the flow of

              electrical current, often to

              protect components

                                                                                           62 / 110

        ██ What is a resistor?

           •  The simple resistor is one of

              the most common electrical

              components on earth.

           •  Resistors limit the flow of

              electrical current, often to

              protect components

           •  Resistance is measured in Ohms,

                                                                                           63 / 110

        ██ What is a resistor?

           •  The simple resistor is one of

              the most common electrical

              components on earth.

           •  Resistors limit the flow of

              electrical current, often to

              protect components

           •  Resistance is measured in Ohms,

           •  The Ohm value of a resistor is

              indicated by the color pattern

              on the led which can be anywhere

              from 3 to 6 bands

                                                                                           64 / 110

        ██ What is a resistor?

           •  The simple resistor is one of

              the most common electrical

              components on earth.

           •  Resistors limit the flow of

              electrical current, often to

              protect components

           •  Resistance is measured in Ohms,

           •  The Ohm value of a resistor is

              indicated by the color pattern

              on the led which can be anywhere

              from 3 to 6 bands

                                                                                           65 / 110

        ██ Assembling the circuit

                                                                                           66 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

                                                                                           67 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

           2. Plug the GND pin from the PI pico into the GND rail of the breadboard

                                                                                           68 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

           2. Plug the GND pin from the PI pico into the GND rail of the breadboard

           3. Attach the negative pin of the LED across the ground rail and main section of

              the breadboard.

                                                                                           69 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

           2. Plug the GND pin from the PI pico into the GND rail of the breadboard

           3. Attach the negative pin of the LED across the ground rail and main section of

              the breadboard.

           4. The negative pin of the LED is indicated by being the shorter one

                                                                                           70 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

           2. Plug the GND pin from the PI pico into the GND rail of the breadboard

           3. Attach the negative pin of the LED across the ground rail and main section of

              the breadboard.

           4. The negative pin of the LED is indicated by being the shorter one

           5. Place the provided 220Ω resistor between pin 16, and the positive pin of the

LED

                                                                                           71 / 110

        ██ Assembling the circuit

           1. Plug the +3.3v pin from the PI pico into the +V rail on the breadboard

           2. Plug the GND pin from the PI pico into the GND rail of the breadboard

           3. Attach the negative pin of the LED across the ground rail and main section of

              the breadboard.

           4. The negative pin of the LED is indicated by being the shorter one

           5. Place the provided 220Ω resistor between pin 16, and the positive pin of the

LED

                                                                                           72 / 110

        ██ Circuit diagram

                                                                                           73 / 110

        ██ CODE TIME!!!1!

                                                                                           74 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

                                                                                           75 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

                                                                                           76 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

                                                                                           77 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

           •  To turn the pin off:

                                                                                           78 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

           •  To turn the pin off:

              ◦  pin.value(0) (or) pin.on()

                                                                                           79 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

           •  To turn the pin off:

              ◦  pin.value(0) (or) pin.on()

           •  To turn the pin on:

                                                                                           80 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

           •  To turn the pin off:

              ◦  pin.value(0) (or) pin.on()

           •  To turn the pin on:

              ◦  pin.value(1) or pin.on()

                                                                                           81 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.

           •  Note 2: multipython has several options for

              setting the state of a pin:

           •  To turn the pin off:

              ◦  pin.value(0) (or) pin.on()

           •  To turn the pin on:

              ◦  pin.value(1) or pin.on()

           •  (pin is just the name of the desired variable

              defined earlier in the script. led_pin in the

              shown example)

                                                                                           82 / 110

        ██ CODE TIME!!!1!

           •  Now that we have the circuit assembled, open

              thonny again and type in the following code:            import picozero

           •  Note: the int value in "machine.Pin(16)" (16)

              denotes which GPIO pin we are referencing.              led_pin = machine.

           •  Note 2: multipython has several options for             Pin(16)

              setting the state of a pin:

           •  To turn the pin off:                                    led_pin.value(1)

              ◦  pin.value(0) (or) pin.on()

           •  To turn the pin on:

              ◦  pin.value(1) or pin.on()

           •  (pin is just the name of the desired variable

              defined earlier in the script. led_pin in the

              shown example)

                                                                                           83 / 110

        ██ What does "pulldown" / "pullup" mean?

                                                                                           84 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

                                                                                           85 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

              ◦  This is why we "pull" an input pin to a certain point.

                                                                                           86 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

              ◦  This is why we "pull" an input pin to a certain point.

           •  To "pull-up" a pin, means to make it so that the default state of that pin is

              1 (or +V).

                                                                                           87 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

              ◦  This is why we "pull" an input pin to a certain point.

           •  To "pull-up" a pin, means to make it so that the default state of that pin is

              1 (or +V).

              ◦  Thus, if our button closes the circuit to ground when pressed, the pin will

                 be pulled low (0v) which is easily distinguishable from the default state

                 of 1

                                                                                           88 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

              ◦  This is why we "pull" an input pin to a certain point.

           •  To "pull-up" a pin, means to make it so that the default state of that pin is

              1 (or +V).

              ◦  Thus, if our button closes the circuit to ground when pressed, the pin will

                 be pulled low (0v) which is easily distinguishable from the default state

                 of 1

           •  Pulling down, which is somewhat more common does the opposite, making the

              default state 0, for the pin to be pulled HIGH (1/+V) when the button is

              pressed

                                                                                           89 / 110

        ██ What does "pulldown" / "pullup" mean?

           •  When reading electrical signals, it is often necssary to deal with

              interference which may cause false readings.

              ◦  This is why we "pull" an input pin to a certain point.

           •  To "pull-up" a pin, means to make it so that the default state of that pin is

              1 (or +V).

              ◦  Thus, if our button closes the circuit to ground when pressed, the pin will

                 be pulled low (0v) which is easily distinguishable from the default state

                 of 1

           •  Pulling down, which is somewhat more common does the opposite, making the

              default state 0, for the pin to be pulled HIGH (1/+V) when the button is

              pressed

                                                                                           90 / 110

        ██ Quick note

                                                                                           91 / 110

        ██ Quick note

           •  Due to a hardware error on the RP2350, the internal PULL-DOWN resistors do not

              function properly.

                                                                                           92 / 110

        ██ Quick note

           •  Due to a hardware error on the RP2350, the internal PULL-DOWN resistors do not

              function properly.

           •  If, for a future project you need to use a pulldown resistor

                                                                                           93 / 110

        ██ Quick note

           •  Due to a hardware error on the RP2350, the internal PULL-DOWN resistors do not

              function properly.

           •  If, for a future project you need to use a pulldown resistor

              ◦  It is easy to provide your own by simply putting a low-resistance resistor

                 between your input pin and GND

                                                                                           94 / 110

        ██ Quick note

           •  Due to a hardware error on the RP2350, the internal PULL-DOWN resistors do not

              function properly.

           •  If, for a future project you need to use a pulldown resistor

              ◦  It is easy to provide your own by simply putting a low-resistance resistor

                 between your input pin and GND

           •  For now, we will just use PULLUP instead as it doesnt change much for our

              circuit

                                                                                           95 / 110

        ██ Quick note

           •  Due to a hardware error on the RP2350, the internal PULL-DOWN resistors do not

              function properly.

           •  If, for a future project you need to use a pulldown resistor

              ◦  It is easy to provide your own by simply putting a low-resistance resistor

                 between your input pin and GND

           •  For now, we will just use PULLUP instead as it doesnt change much for our

              circuit

                                                                                           96 / 110

        ██ Assembling the button circuit

           1. Place the Button across the division in the breadboard

           2. On one corner of the button, attach a cable to the ground rail

           3. On the opposite, diagonal corner of the button, attach a cable to pin 16

                                                                                           97 / 110

        ██ Circuit diagram

                                                                                           98 / 110

        ██ Code for the button

                                                                                           99 / 110

        ██ Code for the button

           •  Line 5: In this line we define a

              variable for our input pin,

              defining it as pin 16, an input

              pin, and enabling the pull_up

              function

                                                                                          100 / 110

        ██ Code for the button

           •  Line 5: In this line we define a

              variable for our input pin,

              defining it as pin 16, an input

              pin, and enabling the pull_up

              function

           •  The time.sleep present in line

              15 is added because we are

              flooding the terminal with text

              as this script runs very

              quickly, this can easily cause

              an overflow, thus we add a sleep

              function to clean up the output

              a bit and make it more

              responsive

                                                                                          101 / 110

        ██ Code for the button

           •  Line 5: In this line we define a

              variable for our input pin,               import picozero

              defining it as pin 16, an input           from machine import Pin

              pin, and enabling the pull_up             import time

              function

           •  The time.sleep present in line            button_pin = Pin(16, Pin.IN, Pin.

              15 is added because we are                PULL_UP)

              flooding the terminal with text

              as this script runs very                  while True:

              quickly, this can easily cause                value = button_pin.value()

              an overflow, thus we add a sleep              if value == 0:

              function to clean up the output                   print("button is pressed")

              a bit and make it more                            picozero.pico_led.on()

              responsive                                    else:

                                                                print("button is not

                                                        pressed")

                                                                picozero.pico_led.off()

                                                            time.sleep(0.25)

                                                                                          102 / 110

        ██ Extra

        ▓▓▓ If we have time

        Start with the previously assembled button circuit, your breadboard should look like

        this:

                                                                                          103 / 110

        ██ Add your LED!

                                                                                          104 / 110

        ██ Add your LED!

           •  Now, I’d like you to add your LED from earlier to this circuit, wired to GPIO

              pin 16!

                                                                                          105 / 110

        ██ Add your LED!

           •  Now, I’d like you to add your LED from earlier to this circuit, wired to GPIO

              pin 16!

           •  Do this on your own and call out if you need help!

                                                                                          106 / 110

        ██ Add your LED!

           •  Now, I’d like you to add your LED from earlier to this circuit, wired to GPIO

              pin 16!

           •  Do this on your own and call out if you need help!

                                                                                          107 / 110

        ██ Final circuit diagram!

        Your circuit should look something like this:

                                                                                          108 / 110

        ██ Code time

                           import picozero

                           from machine import Pin

                           import time

                           butn = machine.Pin(17, Pin.IN, Pin.PULL_UP)

                           led = machine.Pin(16, Pin.OUT)

                           led.value(0)

                           latch = 0

                           while True:

                               if butn.value() == 0:

                                   latch = not latch

                               led.value(latch)

                               time.sleep(0.1)

                                                                                          109 / 110