Source: https://mokxi.com/kits/companion/sunfounder-kepler-kit-pico-w
Updated: 2026-11-07

Kits / Kit companions
Kit companion

# SunFounder Kepler Kit for Raspberry Pi Pico W: lesson by lesson, simulated

The kit’s MicroPython lessons, in order, each a program that runs on a simulated Pico W in your browser with the kit’s parts on the GP pins its code uses: from a blinking LED and a keypad game to joining WiFi and serving a web page.

Open the first lesson Find your lesson What else it can build

Not affiliated with SunFounder. Lesson titles are referenced so you can follow along.

Lesson by lesson

## Every lesson in the kit’s order

Lesson numbers and titles follow the MicroPython lessons of the online tutorial (read November 2026). Each circuit uses the kit’s parts on the pins the lesson uses.

48 of the 57 lessons with a circuit run here, 10 of them with a change we name, 9 coming soon, 6 setup lessons need no circuit.

1.1

### Introduction of MicroPython

No circuit

What MicroPython is. Every lesson below runs the real MicroPython firmware for the Pico W.

1.2

### Install Thonny IDE

No circuit

Installing an editor on the computer. The editor here runs in the browser, with nothing to install.

1.3

### Install MicroPython on Your Pico

No circuit

Putting the MicroPython firmware on the board. The simulated Pico W boots it already.

1.4

### Upload the Libraries to Pico

No circuit

Copying the kit’s driver files onto the board. Here each lesson that needs a driver carries its own in a tab, copied on at Run.

1.5

### Quick Guide on Thonny

No circuit

Running, stopping and saving a program. Run and the Serial Monitor here do the same jobs.

1.6

### (Optional) MicroPython Basic Syntax

No circuit

A primer on Python syntax: variables, loops, lists and functions. No circuit.

2.1

### Hello, LED!

Runs here

An LED and a 220 ohm resistor on GP15, switched on and off once a second.

Open in the editor Pico W MicroPython blink on GP15

2.2

### Display the Level

Runs here

A ten-segment LED bar on GP6 to GP15, a 220 ohm on each segment, filling up one segment at a time and then emptying.

Open in the editor Pico W LED bar graph fills and empties

2.3

### Fading LED

Runs here

PWM on GP15 raises the LED’s duty cycle in small steps, so it brightens slowly.

Open in the editor Pico W fading LED with PWM on GP15

2.4

### Colorful Light

Runs here

A common-cathode RGB LED on GP13, GP14 and GP15 (330 ohm on red, 220 on the others) mixes orange from three PWM levels.

Open in the editor Pico W RGB LED mixes orange with PWM

2.5

### Reading Button Value

Runs here

A button from 3.3 V to GP14 with a 10k pull-down: each press prints a line.

This is the lesson’s pull-down wiring; it also shows a pull-up version, which reads the other way around.

Open in the editor Pico W button on GP14 with a pull-down

2.6

### Tilt It！

Runs here

A ball tilt switch from 3.3 V to GP14 with a 10k pull-down: tip it over and the program says it opened.

Open in the editor Pico W tilt switch on GP14

2.7

### Toggle Left and Right

Runs here

A slide switch with its middle leg on GP14 puts the pin on 3.3 V or ground, with a 10k and a 100 nF capacitor to steady it.

Open in the editor Pico W slide switch on GP14

2.8

### Press Gently

Runs here

A lever micro switch with its common leg on GP14 reads 1 while pressed and 0 at rest.

Open in the editor Pico W micro switch on GP14

2.9

### Feel the Magnetism

Runs here

A reed switch from 3.3 V to GP14 closes when a magnet comes near, and a pin interrupt counts each time.

Open in the editor Pico W reed switch interrupt on GP14

2.10

### Detect Human Movement

Runs here

A PIR motion sensor on GP14 raises an interrupt when someone moves, and the program times each spell of movement and quiet.

Open in the editor Pico W PIR motion sensor on GP14

2.11

### Turn the Knob

Runs here

A potentiometer on GP28 (ADC2) sets the PWM brightness of the LED on GP15, and its reading is printed.

Open in the editor Pico W knob on GP28 dims an LED on GP15

2.12

### Feel the Light

Runs here

A photoresistor and a 10k divide 3.3 V with the middle on GP28: more light, a lower reading.

Open in the editor Pico W photoresistor divider on GP28

2.13

### Thermometer

Runs here

A 10k thermistor divider on GP28, turned into Celsius and Fahrenheit with the beta equation.

Open in the editor Pico W thermistor thermometer on GP28

2.14

### Feel the Water Level

Runs here

A water level sensor on GP28 reads higher the more of it is wet, and warns of a leak over 30000.

Open in the editor Pico W water level sensor on GP28

2.15

### Two Kinds of Transistors

Runs here

A button on GP14 is copied to GP15, which switches an LED through an S8050 NPN transistor.

This is the lesson’s S8050 (NPN) circuit. With the S8550 (PNP) in its place, the same program lights the LED while the button is up instead.

Open in the editor Pico W button switches an LED through an S8050

2.16

### Control Another Circuit

Runs, with a change

GP15 drives an S8050 that pulls in a relay, with a 1N4007 across its coil, and the relay’s contact switches an LED on and off every two seconds.

The relay’s coil is fed from VBUS (5 V) here. The lesson feeds it from 3.3 V, which is below the pull-in voltage of a 5 V relay, so the simulated one would stay open. A two-pole relay plays the kit’s one-pole relay; one pole is used.

Open in the editor Pico W relay through an S8050 switches an LED

3.1

### Beep

Runs here

GP15 switches an S8050 that sounds an active buzzer: four short beeps, a pause, and again.

Open in the editor Pico W active buzzer beeps through an S8050

3.2

### Custom Tone

Runs here

PWM on GP15 drives a passive buzzer through the S8050: three notes, 440, 494 and 523 Hz.

Open in the editor Pico W passive buzzer plays notes with PWM

3.3

### RGB LED Strip

Runs here

Eight WS2812 pixels on GP0, fed from VBUS, each given its own color, then the colors turned along the strip.

The program uses MicroPython’s own neopixel module where the lesson loads the kit’s ws2812.py; the strip sees the same data.

Open in the editor Pico W WS2812 strip of eight on GP0

3.4

### Liquid Crystal Display

Runs here

An I2C LCD1602 on I2C1, SDA on GP6 and SCL on GP7, shows two messages in turn.

The lesson’s text says pins 20 and 21, but its code and drawing use GP6 and GP7, as here.

Open in the editor Pico W I2C LCD1602 on GP6 and GP7

3.5

### Small Fan

Runs, with a change

GP14 and GP15 drive a DC motor through a motor driver: a second one way, a stop, a second the other way.

The kit’s TA6586 motor driver is not simulated, so an L9110S plays it: the same two inputs per motor (GP14 and GP15) and the same truth table. It runs from the Pico W’s 3.3 V here, where the kit uses its Li-po charger module: on 5 V the L9110S would not read the Pico W’s 3.3 V outputs as high.

Open in the editor Pico W fan motor both ways on a motor driver

3.6

### Pumping

Runs, with a change

GP14 high and GP15 low keep a small water pump running through the motor driver.

The kit’s TA6586 motor driver is not simulated, so an L9110S plays it: the same two inputs per motor (GP14 and GP15) and the same truth table. It runs from the Pico W’s 3.3 V here, where the kit uses its Li-po charger module: on 5 V the L9110S would not read the Pico W’s 3.3 V outputs as high.

Open in the editor Pico W water pump on a motor driver

3.7

### Swinging Servo

Runs here

50 Hz PWM on GP15 sweeps an SG90 servo from 0 to 180 degrees and back.

Open in the editor Pico W servo sweep on GP15

4.1

### Toggle the Joystick

Runs here

A joystick with X on GP27, Y on GP26 and its press switch on GP22 with a 10k pull-up, printed five times a second.

Open in the editor Pico W joystick on GP27, GP26 and GP22

4.2

### 4x4 Keypad

Runs, with a change

A 4x4 keypad with rows on GP2 to GP5 and columns on GP6 to GP9, each column pulled down, scanned row by row.

The kit puts a 10k pull-down on each column; here the Pico W’s own pull-downs (Pin.PULL_DOWN) do the same job, so the resistors are left out.

Open in the editor Pico W 4x4 keypad on GP2 to GP9

4.3

### Electrode Keyboard

Runs here

An MPR121 touch module on I2C1 (GP6 and GP7) reports which of its twelve electrodes a finger is on.

The program reads the chip with a small mpr121.py of Mokxi’s, in its own tab.

Open in the editor Pico W MPR121 touch keyboard on I2C1

5.1

### Microchip - 74HC595

Runs here

A 74HC595 with DS on GP0, STcp on GP1 and SHcp on GP2 lights eight LEDs one more at a time, then clears them.

Open in the editor Pico W 74HC595 fills eight LEDs

5.2

### Number Display

Runs here

The 74HC595 drives a common-cathode seven-segment digit through one 220 ohm on its common pins, counting 0 to 9.

Open in the editor Pico W 74HC595 counts 0 to 9 on a digit

5.3

### Time Counter

Runs here

A 74HC595 on GP18 to GP20 and digit selects on GP10 to GP13 multiplex a four-digit display that counts the seconds.

Each digit’s select pin gets its own 220 ohm, as in the lesson, and the four digits are multiplexed a few milliseconds apart.

Open in the editor Pico W four-digit display counts seconds

5.4

### 8x8 Pixel Graphics

Coming soon

Two chained 74HC595s scan an 8x8 LED matrix row by row to draw a cross.

The kit’s bare 8x8 LED matrix, driven by two 74HC595s, is not simulated yet. The MAX7219 matrix module is, if you want to try a matrix now.

6.1

### Measuring Distance

Runs, with a change

An HC-SR04 with TRIG on GP17 and ECHO on GP16, its echo timed with ticks_us() and turned into centimeters.

The HC-SR04 is fed from VBUS (5 V) here. The lesson powers it from 3.3 V, below the 4.5 V its datasheet asks for, and the simulated module, like the datasheet, does not range on 3.3 V. On 5 V its ECHO is a 5 V signal, so a 1k and a 2k divide it down to 3.3 V for GP16.

Open in the editor Pico W HC-SR04 distance on GP17 and GP16

6.2

### Temperature - Humidity

Runs here

A DHT11 on GP16 reports the temperature and the humidity every two seconds.

The program uses MicroPython’s own dht module where the lesson loads the kit’s dht.py.

Open in the editor Pico W DHT11 temperature and humidity on GP16

6.3

### 6-axis Motion Tracking

Runs here

An MPU6050 on I2C1 (GP6 and GP7) prints its acceleration and its rotation.

The program reads the chip with a small mpu6050.py of Mokxi’s, in g rather than the m/s² the kit’s imu.py gives.

Open in the editor Pico W MPU6050 acceleration and rotation

6.4

### IR Remote Control

Runs here

An IR receiver on GP17 and the 21-button remote: each button’s NEC code is decoded and its name printed.

The decoder is a small nec.py of Mokxi’s, timed from pin interrupts, in place of the kit’s ir_rx folder.

Open in the editor Pico W infrared remote decoder on GP17

6.5

### Radio Frequency Identification

Runs, with a change

An MFRC522 on SPI0 reads a card’s UID and the text stored on it, and stores text typed in the Serial Monitor on the next card.

The lesson has two programs, one to write and one to read; here one program does both. It uses a small mfrc522.py of Mokxi’s and stores the text in block 8.

Open in the editor Pico W MFRC522 reads and writes RFID cards

7.1

### Light Theremin

Runs here

A photoresistor on GP28 learns the light’s range for five seconds while the LED on GP16 is lit, then the light sets the buzzer’s pitch.

Open in the editor Pico W light theremin: light sets the pitch

7.2

### Room Temperature Meter

Runs here

The thermistor divider on GP28 gives the temperature and the I2C LCD shows it every second.

Open in the editor Pico W room temperature on an I2C LCD

7.3

### Alarm Siren Lamp

Runs here

A slide switch on GP17 turns on a siren: the buzzer sweeps 130 to 800 Hz while the LED on GP16 pulses in step.

Open in the editor Pico W alarm siren and lamp on a slide switch

7.4

### Passenger Counter

Runs here

Each time the PIR on GP16 sees someone, a pin interrupt adds one to the count on the four-digit display.

Each digit’s select pin gets its own 220 ohm, as in the lesson, and the four digits are multiplexed a few milliseconds apart.

Open in the editor Pico W passenger counter: PIR and four digits

7.5

### GAME - 10 Second

Runs here

Shake the tilt switch on GP16 to start and stop a stopwatch on the display; stop it on exactly 10.00 to win.

Each digit’s select pin gets its own 220 ohm, as in the lesson, and the four digits are multiplexed a few milliseconds apart.

Open in the editor Pico W ten-second game with a tilt switch

7.6

### Traffic Light

Runs here

Green on GP7, yellow on GP8 and red on GP9 change on a timer, 30, 5 and 30 seconds, with the time left on the display.

The lesson’s text lists the colors in another order; its code and drawing put green on GP7 and red on GP9, as here.

Open in the editor Pico W traffic light with a countdown display

7.7

### Guess Number

Runs, with a change

A number game on the keypad (rows GP21 to GP18, columns GP13 to GP10) and the I2C LCD, which narrows the range after each guess.

The kit puts a 10k pull-down on each column; here the Pico W’s own pull-downs (Pin.PULL_DOWN) do the same job, so the resistors are left out.

Open in the editor Pico W guess the number: keypad and LCD

7.8

### RFID Music Player

Runs, with a change

Lay a card on the reader and the notes stored on it play on the buzzer, with the WS2812 strip flashing a color per note.

Store the tune with lesson 6.5’s program here, which keeps it in block 8. A card with nothing stored plays a short tune of its own.

Open in the editor Pico W RFID music player with a WS2812 strip

7.9

### Fruit Piano

Runs here

Each of the MPR121’s twelve electrodes plays its own note while the RGB LED on GP13, GP12 and GP11 flashes a random color.

Touch the electrodes on the canvas; the fruit is left out.

Open in the editor Pico W fruit piano: MPR121, buzzer and RGB LED

7.10

### Reversing Aid

Runs, with a change

An HC-SR04 measures the gap, and the active buzzer on GP15 and the LED on GP14 beep faster as an obstacle gets closer.

The HC-SR04 is fed from VBUS (5 V) here. The lesson powers it from 3.3 V, below the 4.5 V its datasheet asks for, and the simulated module, like the datasheet, does not range on 3.3 V. On 5 V its ECHO is a 5 V signal, so a 1k and a 2k divide it down to 3.3 V for GP16.

Open in the editor Pico W reversing aid: HC-SR04 and a beeper

7.11

### Somatosensory Controller

Runs here

The tilt of the MPU6050, worked out from gravity and averaged, turns the servo on GP15 to follow it.

Open in the editor Pico W tilt controller: MPU6050 points a servo

7.12

### Digital Bubble Level

Coming soon

The MPU6050’s tilt moves a two-by-two bubble around an 8x8 LED matrix.

The kit’s bare 8x8 LED matrix, driven by two 74HC595s, is not simulated yet. The MAX7219 matrix module is, if you want to try a matrix now.

8.1

### Access to the Network

Runs here

The Pico W joins WiFi, gives up after ten seconds if it cannot, and prints its IP address.

It joins Mokxi’s simulated access point, named by the board’s WiFi properties. The lesson also saves the network’s name and password in a file of their own; here they sit at the top of main.py.

Open in the editor Pico W joins WiFi in MicroPython

8.2

### Follow the @CheerLights

Coming soon

The strip on GP0 shows the CheerLights color, fetched from ThingSpeak once a minute.

Mokxi’s simulated network has no real internet, so this lesson’s cloud service cannot be reached from it. Coming once there is an honest stand-in.

8.3

### Security System via @IFTTT

Coming soon

When the PIR on GP17 fires, the buzzer sounds and an IFTTT webhook sends an email.

Mokxi’s simulated network has no real internet, so this lesson’s cloud service cannot be reached from it. Coming once there is an honest stand-in.

8.4

### Real-time Weather From @OpenWeatherMap

Runs, with a change

Join WiFi, fetch the weather and the time, and show both on the I2C LCD on GP6 and GP7.

OpenWeatherMap and NTP are on the real internet, which the simulated network does not reach. Here the weather comes from http://weather.mokxi/ (set it in the Cloud panel) and the time from http://time.mokxi/.

Open in the editor Pico W WiFi weather and time on an I2C LCD

8.5

### Cloud Calling System with @MQTT

Coming soon

Four buttons on GP16 to GP19 each publish a message to a public MQTT broker.

Mokxi’s simulated network has no real internet, so this lesson’s cloud service cannot be reached from it. Coming once there is an honest stand-in.

8.6

### Cloud Player with @MQTT

Coming soon

A song name arriving on an MQTT topic plays that tune on the buzzer.

Mokxi’s simulated network has no real internet, so this lesson’s cloud service cannot be reached from it. Coming once there is an honest stand-in.

8.7

### Setup a Web Server

Runs here

The Pico W serves a web page on port 80 whose links set the RGB LED on GP13 to GP15 and which shows the thermistor’s temperature.

Open the board’s page from the Web panel. The 3.3 V supply comes from the Pico W’s USB rather than the kit’s Li-po charger.

Open in the editor Pico W web server sets an RGB LED

8.8

### Building Web APP with @Anvil

Coming soon

The DHT11’s readings go to an Anvil web app, and text typed in the app shows on the LCD.

This lesson needs Anvil’s own firmware for the Pico W and its cloud, neither of which runs here.

8.9

### Play in @SunFounder Controller

Coming soon

A phone app’s slider turns the servo and its gauge shows the HC-SR04’s distance, over a WebSocket on the local network.

This lesson talks to SunFounder’s phone app over a WebSocket on port 8765; the simulated network reaches a board’s port 80 only.

8.10

### Plant Monitor in @SunFounder Controller

Coming soon

A phone app shows the temperature, the humidity and the water level, and runs the pump at a press.

This lesson talks to SunFounder’s phone app over a WebSocket on port 8765; the simulated network reaches a board’s port 80 only.

Lesson list and pins read from SunFounder’s online tutorial. The explanations on this page are our own.

Learning path

## Everything the SunFounder Kepler Kit for Raspberry Pi Pico W can build

54 projects use only the parts in this box, ordered from a first blink to the hardest.

Beginner (31)

- Pico W joins WiFi in MicroPython
- MicroPython WiFi access point mode on a Pico W
- MicroPython WiFi station mode on a Pico W
- Pico W DHT11 temperature and humidity on GP16
- Pico W I2C LCD1602 on GP6 and GP7
- Pico W PIR motion sensor on GP14
- Pico W servo sweep on GP15
- Pico W water level sensor on GP28
- Pico W WS2812 strip of eight on GP0
- Operating point and sweep
- Hello, breadboard
- Pico W button on GP14 with a pull-down
- Pico W fading LED with PWM on GP15
- Pico W MicroPython blink on GP15
- Pico W joystick on GP27, GP26 and GP22
- Pico W LED bar graph fills and empties
- Pico W photoresistor divider on GP28
- Pico W reed switch interrupt on GP14
- Pico W RGB LED mixes orange with PWM
- Pico W thermistor thermometer on GP28
- Pico W tilt switch on GP14
- Pico W water pump on a motor driver
- Pico W chaser
- Three-way switch
- Pico W active buzzer beeps through an S8050
- Pico W knob on GP28 dims an LED on GP15
- Pico W micro switch on GP14
- Pico W slide switch on GP14
- Motion light
- NPN transistor switch
- Pico W button switches an LED through an S8050

Intermediate (18)

- MicroPython WiFi AP and station at once on a Pico W
- Pico W 4x4 keypad on GP2 to GP9
- Pico W MPR121 touch keyboard on I2C1
- Pico W MPU6050 acceleration and rotation
- Pico W WiFi weather and time on an I2C LCD
- Pico W HC-SR04 distance on GP17 and GP16
- Pico W infrared remote decoder on GP17
- Pico W fan motor both ways on a motor driver
- Pico W 74HC595 counts 0 to 9 on a digit
- Pico W 74HC595 fills eight LEDs
- Pico W four-digit display counts seconds
- Pico W room temperature on an I2C LCD
- Pico W passenger counter: PIR and four digits
- Pico W ten-second game with a tilt switch
- Pico W traffic light with a countdown display
- Motor starter circuit
- Pico W relay through an S8050 switches an LED
- Pico W reversing aid: HC-SR04 and a beeper

Advanced (5)

- MicroPython web server on a Pico W: switch the LED
- Pico W MFRC522 reads and writes RFID cards
- Pico W guess the number: keypad and LCD
- Pico W tilt controller: MPU6050 points a servo
- Pico W web server sets an RGB LED

Level up

## Add a few parts, unlock more projects

The smallest shopping lists that open the most new projects for the SunFounder Kepler Kit for Raspberry Pi Pico W.

### Add Piezo speaker

Unlocks 5 more projects:

- Pico W passive buzzer plays notes with PWM
- Pico W light theremin: light sets the pitch
- Pico W alarm siren and lamp on a slide switch
- Pico W fruit piano: MPR121, buzzer and RGB LED
- Pico W RFID music player with a WS2812 strip

### Add Multimeter and Piezo speaker

Unlocks 8 more projects:

- A divider, measured
- The rest of the dial
- Pico W passive buzzer plays notes with PWM
- LED I-V curve
- Pico W light theremin: light sets the pitch
- Pico W alarm siren and lamp on a slide switch
- and 2 more

### Add Multimeter, ne555 and Piezo speaker

Unlocks 11 more projects:

- A divider, measured
- The rest of the dial
- Pico W passive buzzer plays notes with PWM
- Doorbell
- 555 blinker
- LED I-V curve
- and 5 more

Two kits

## Projects that combine two kits

Own another kit as well? These need parts from both boxes, and neither can build them alone.

### With the SunFounder Universal Maker Sensor Kit

184 projects:

- Active buzzer
- Active buzzer module on pin 3
- Keypad on pins 11 to 4
- Membrane keypad on pins 9 to 2
- Morse code on an active buzzer (pin 9)
- and 179 more

### With the Arduino Starter Kit

138 projects:

- Active buzzer
- Active buzzer module on pin 3
- DHT11 temperature and humidity
- DHT11 module on pin 4
- DHT11 temperature and humidity on pin 10
- and 133 more

### With the Vilros Arduino Uno 3 Ultimate Starter Kit

118 projects:

- Active buzzer
- Active buzzer module on pin 3
- DHT11 temperature and humidity
- DHT11 module on pin 4
- DHT11 temperature and humidity on pin 10
- and 113 more

### With the Adafruit MetroX Classic Kit

111 projects:

- Active buzzer
- Active buzzer module on pin 3
- DHT11 temperature and humidity
- DHT11 module on pin 4
- DHT11 temperature and humidity on pin 10
- and 106 more

In the box

## The kit’s parts, and what plays them here

The parts in the SunFounder Kepler Kit for Raspberry Pi Pico W, by the names its maker gives them. Each one is in the editor’s parts panel.

- Raspberry Pi Pico W Raspberry Pi Pico W
- Breadboard Full-size breadboard The circuits here wire each part straight to the board’s pins.
- LEDs (red, green, blue, yellow, white) LED
- Resistors, 10 ohm to 1 megohm Resistor
- 1N4007 diode Diode
- Capacitors (104 ceramic, 10 uF) Capacitor
- S8050 and S8550 transistors Transistor (NPN or PNP)
- RGB LED RGB LED
- LED bar graph LED bar graph, 10 segments
- 7-segment display Seven segment display
- 4-digit 7-segment display Four-digit seven segment, multiplexed
- LED dot matrix (8x8) Not simulated yet; the MAX7219 matrix module is.
- I2C LCD1602 Character LCD with I2C backpack
- WS2812 RGB 8 LEDs strip Addressable RGB LEDs
- 74HC595 74HC595 shift register
- TA6586 motor driver Motor driver, L9110S Not simulated; the L9110S has the same two inputs per motor and plays it.
- Li-po charger module, power pack and battery holder The circuits here run from the Pico W’s USB power (VBUS and 3.3 V).
- Buttons Pushbutton
- Micro switch Limit switch, lever microswitch
- Slide switch Slide switch
- Reed switch Reed switch
- Tilt switch Tilt switch
- Potentiometer Potentiometer
- Infrared receiver Infrared receiver, VS1838B
- Infrared remote Infrared remote, 21 buttons
- Joystick module Thumb stick
- 4x4 keypad Keypad, 4x4
- MPR121 module Capacitive touch, MPR121
- MFRC522 RFID module, card and key fob RFID reader, MFRC522
- Photoresistor Light sensor
- Thermistor Thermistor, 10k NTC
- PIR motion sensor module Motion sensor
- Water level sensor module Water level sensor
- Ultrasonic module Ultrasonic ranger
- DHT11 Temperature and humidity, DHT22 Set to DHT11 in these circuits.
- MPU6050 module Accelerometer and gyroscope, MPU6050
- Active and passive buzzers Buzzer The passive buzzer is the piezo speaker part.
- Relay DPDT relay A two-pole relay; one pole is used.
- DC motor and fan blade DC motor
- DC water pump and tube Mini water pump
- 9G servo Hobby servo
- USB cable and jumper wires The editor connects the board for you, and wires are drawn between pins.

For the manual

## A link and a QR code for this page

Print either one beside a lesson, or tape it inside the box lid. Both open this page.

mokxi.com/k/sunfounder-kepler

The code is black on white with a quiet border, so it prints and scans at any size from 2 cm up.
Download the QR code (SVG)
Make kits? See what we offer kit makers.

FAQ

## Questions about this page

Is this made by SunFounder?

No. Mokxi is independent and is not affiliated with SunFounder. The page follows the kit’s lessons so you can use the two side by side; the circuits, sketches and explanations are Mokxi’s own.

Do I need the kit?

No. Every lesson that runs here runs in the browser, so you can try them before you buy a kit, or keep going while a part is missing or broken.

Is the code the same as in my manual?

The pins and the parts are the same, and the programs are MicroPython running on the real MicroPython firmware, with the same built-in modules. The code itself is written for this page, with comments that explain each step, and a few small drivers of our own stand in for the kit’s driver files, so it will not match the manual line for line.

What do "with a change" and "coming soon" mean?

A lesson marked "with a change" runs, but something differs from the kit, and the note under it says exactly what. "Coming soon" means we cannot simulate that lesson yet, and the note says why. We do not mark a lesson as running unless it does.

Is it free?

Yes. Every lesson on this page opens with no account. A free account saves your own copies of the circuits.

Keep going

## Other kits

Companion pages for more starter kits.

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25 lessons, 24 run in the browser

ELEGOO UNO R3 Most Complete Starter Kit

48 lessons, 44 run in the browser

Arduino Starter Kit

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Freenove Ultimate Starter Kit

42 lessons, 42 run in the browser

ELEGOO UNO R3 Basic Starter Kit

11 lessons, 10 run in the browser

SunFounder Starter Kit for Arduino Uno R3

23 lessons, 23 run in the browser

SunFounder Inventor Lab Kit

34 lessons, 33 run in the browser

Keyestudio 37 in 1 Sensor Kit

37 lessons, 37 run in the browser

REXQualis UNO R3 Super Starter Kit

22 lessons, 21 run in the browser

LAFVIN Super Starter Kit

28 lessons, 27 run in the browser

Freenove Ultimate Starter Kit for ESP32-WROVER

54 lessons, 44 run in the browser

Freenove Ultimate Starter Kit for Raspberry Pi Pico

56 lessons, 50 run in the browser

keyestudio Super Starter Kit

Projects you can build with its parts

Vilros Arduino Uno 3 Ultimate Starter Kit

Projects you can build with its parts

SunFounder Universal Maker Sensor Kit

Projects you can build with its parts

SunFounder ESP32 Ultimate Starter Kit

Projects you can build with its parts

Adafruit MetroX Classic Kit

Projects you can build with its parts

MonkMakes Electronics Kit 1 for Raspberry Pi Pico

Projects you can build with its parts

Kitronik Discovery Kit for Raspberry Pi Pico

Projects you can build with its parts

Kitronik Inventor’s Kit for the Raspberry Pi Pico

Projects you can build with its parts

Keyestudio ESP32 Learning Kit Ultimate Edition

Projects you can build with its parts

## Start at lesson one

Every project opens in the editor with no account and nothing to install. Run it, change a number, run it again.

See the lessons
