Source: https://mokxi.com/kits/companion/sunfounder-inventor-lab-kit Updated: 2026-11-07 Kits / Kit companions Kit companion # SunFounder Inventor Lab Kit: every lesson, simulated All 34 hands-on lessons, in order, each a circuit you can run in your browser on the pins the lesson uses: from a first LED and a multimeter to a robot that plays the dinosaur game, a radar and a card-operated door. 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 34 hands-on lessons of the online tutorial. Each circuit uses the kit’s parts on the pins the lesson uses. 33 of the 33 lessons with a circuit run here, 2 of them with a change we name, 1 setup lesson needs no circuit. 1 ### Get Started Arduino No circuit Installing the Arduino IDE and meeting the board. Here the editor and the compiler already run in the browser. 2 ### Your First Circuit Runs here A red LED and a 220 ohm resistor on the Uno’s 5 V pin, no code: the Uno is only the battery. Open in the editor An LED on the 5 V pin 3 ### Measure with Multimeter Runs here The first circuit with a multimeter in it. Read the current, then switch the dial to volts and move the leads. Open in the editor An LED on 5 V, with a multimeter on it 4 ### Ohm’s Law: A Journey Through the Essentials of Electrical Circuits Runs here Give the resistor 1k or 10k and watch the meter: more ohms, less current, just as Ohm’s law says. Open in the editor An LED on 5 V, with a multimeter on it 5 ### Series Circuit vs. Parallel Circuit Runs here Two LEDs in series share the 5 V and glow dimly; two in parallel each get all of it. The meter shows the difference. Open in the editor Series and parallel LEDs on 5 V 6 ### Blink LED Runs here The first sketch: an LED on pin 3, on for half a second and off for half a second. Open in the editor Blink an LED on pin 3 7 ### Let’s Make Traffic Lights! Runs here Green on pin 3, yellow on 4 and red on 5, running through a traffic light’s cycle. Open in the editor Traffic lights on pins 3, 4 and 5 8 ### Traffic Light with Pedestrian Button Runs here A crossing button on pin 8 with a 10k pull-down stops the cars and turns the light red. Open in the editor Traffic lights with a crossing button on pin 8 9 ### Dimmable Desk Lamp Runs here A potentiometer on A0 sets the brightness of an LED on pin 9 with analogWrite. Open in the editor Knob on A0 dims the LED on pin 9 10 ### Morse Code Runs here An active buzzer on pin 9 sends SOS: three short beeps, three long, three short. Open in the editor Morse code on an active buzzer (pin 9) 11 ### The Colors of the Rainbow Runs here An RGB LED with red on pin 11, green on 10 and blue on 9 runs through the colors of the rainbow. Open in the editor RGB colors on pins 11, 10 and 9 12 ### Siren Sound Runs here A passive buzzer on pin 9 sweeps up and down in pitch with tone(), like a siren. Open in the editor Siren on a passive buzzer (pin 9) 13 ### Joystick LED Navigator Runs here Push the joystick (A0, A1 and pin 2) and the LED on that side lights: left 11, right 8, up 10, down 9. Open in the editor Joystick lights the way (LEDs on 8 to 11) 14 ### Play Dinosaur Game Runs, with a change A light sensor on A0 spots a dark cactus on the screen and a servo on pin 9 presses the space bar to jump. There is no game screen in the simulator: drag the light sensor darker to play the cactus going by, and watch the servo jump. Open in the editor Dinosaur game player: light sensor on A0, servo on 9 15 ### Cool or Warm Colors Runs here A knob on A0 blends the RGB LED on 11, 10 and 9 from a warm orange to a cool blue. Open in the editor Warm or cool light: a knob blends an RGB LED 16 ### Summer Fan Runs here An L293D drives a motor from pins 10 and 9; four buttons on pins 4 to 7 choose off, slow, medium or fast. The lesson powers the motor side from a breadboard power module and a 9 V battery; here the Uno’s 5 V feeds it. Open in the editor Summer fan: four buttons and an L293D (pins 9 and 10) 17 ### Exploring the I2C LCD1602 Display Runs here An I2C LCD on A4 and A5: scan the bus for its address, then write on it. Open in the editor I2C LCD1602: find its address, then say hello 18 ### ON/OFF Desk Lamp Runs here Each press of the button on pin 7 flips a relay module on pin 2, and the relay switches an LED lamp. Open in the editor On and off desk lamp: button on 7, relay on 2 19 ### Smart Trash Can Runs here An ultrasonic sensor on pins 8 and 7 sees a hand, and a servo on pin 9 opens the lid. Open in the editor Smart trash can: ultrasonic on 8 and 7, servo lid on 9 20 ### Automatic Soap Dispenser Runs here A hand under the ultrasonic sensor (8 and 7) runs a pump for one dose through an L293D on pin 2. The lesson powers the motor side from a breadboard power module and a 9 V battery; here the Uno’s 5 V feeds it. Open in the editor Automatic soap dispenser: ultrasonic on 8 and 7, pump on 2 21 ### Temperature Alarm Runs here A thermistor on A0 turns an RGB LED on 10, 11 and 12 blue when cold, green when comfortable and red when too hot. Open in the editor Temperature alarm: thermistor on A0, RGB on 10, 11 and 12 22 ### Remote-Controlled Colorful Light Runs here The number buttons on the IR remote (receiver on pin 2) pick the color of the RGB LED on 11, 10 and 9. Open in the editor Remote-controlled colors: IR on pin 2, RGB on 11, 10 and 9 23 ### Play “Twinkle, Twinkle, Little Star” Runs here A passive buzzer on pin 9 plays the tune from an array of notes and an array of lengths. Open in the editor Twinkle, Twinkle, Little Star on a passive buzzer (pin 9) 24 ### The Pomodoro Timer Runs here An active buzzer on pin 9 marks 25 minutes of work and 5 of rest, timed with millis(). Open in the editor Pomodoro timer on an active buzzer (pin 9) 25 ### Reverse Radar System Runs here The closer the wall to the ultrasonic sensor, the faster the buzzer on pin 9 beeps, with the distance on an I2C LCD. Open in the editor Reversing radar: ultrasonic, buzzer and I2C LCD 26 ### Cyber Dice Runs here Hold the button on pin 9 to roll; a seven-segment digit on pins 2 to 8 spins and stops on 1 to 6. Open in the editor Cyber dice: seven-segment on pins 2 to 8, button on 9 27 ### Flowing Light with 74HC595 Runs here Eight LEDs on a 74HC595 (DS 11, SH_CP 8, ST_CP 12) fill up one at a time. Open in the editor Flowing light on a 74HC595 (pins 11, 8 and 12) 28 ### Show Number with 74hc595 Runs here Type a digit into the serial monitor and the 74HC595 shows it on a seven-segment display. Q7 is left unwired here, since the sketch never lights the decimal point; the lesson wires it to dp. Open in the editor Type a digit: serial to a 74HC595 display (pins 11, 8 and 12) 29 ### Plant Monitor Runs here Light on A0, soil moisture on A1 and temperature on A2 on an I2C LCD, and a pump on pin 12 for dry soil. The lesson powers the motor side from a breadboard power module and a 9 V battery; here the Uno’s 5 V feeds it. Open in the editor Plant monitor: light, soil, temperature and a pump 30 ### Arduino Radar System Runs, with a change A servo on pin 12 sweeps an ultrasonic sensor (TRIG 10, ECHO 11) and reports each angle and distance. The board’s half runs here and prints each angle and distance; the radar screen is a Processing sketch on your computer. Open in the editor Radar sweep: ultrasonic on 10 and 11, servo on 12 31 ### Guess Number Runs here Guess the board’s secret number with the IR remote; the I2C LCD narrows the range after each try. Open in the editor Guess the number: IR remote and an I2C LCD 32 ### Stopwatch Runs here Minutes and seconds on a four-digit display: segments on pins 2 to 9, digits on 10 to 13. Each segment line has its own 220 ohm here; the lesson puts its resistors on the digit lines. Open in the editor Stopwatch: four-digit display, digits on 10 to 13 33 ### Exploring the RF522-RFID Module Runs here An RC522 reader (SS 10, RST 9) reads a card’s ID and shows it on the I2C LCD. Open in the editor RFID reader with an I2C LCD 34 ### Access Control System Runs here The right card turns a stepper on pins 2 to 5 to open the door; the wrong one is refused on the LCD. Open in the editor Access control: RFID card opens a stepper door Lesson list and pins read from SunFounder’s online tutorial. The explanations on this page are our own. Learning path ## Everything the SunFounder Inventor Lab Kit can build 159 projects use only the parts in this box, ordered from a first blink to the hardest. Beginner (91) - EEPROM: memory that survives a reset - Serial echo: the board repeats what you type - A divider, measured - Active buzzer - Active buzzer module on pin 3 - I2C LCD1602: find its address, then say hello - Joystick on A0, A1 and pin 2 - Joystick module: A0, A1 and pin 3 - Joystick on A0, A1 and pin 8 - Morse code on an active buzzer (pin 9) - Passive buzzer scale on pin 12 - Passive buzzer module on pin 3 - Passive buzzer on pin 8 - Pomodoro timer on an active buzzer (pin 9) - RC522 RFID reader (SS 10, RST 9) - Servo sweep - Servo sweep on pin 10 - Servo sweep on pin 3 - Siren on a passive buzzer (pin 9) - Ultrasonic distance on pins 12 and 11 - Ultrasonic sensor on 8 and 7, the LED on 13 when out of range - Stepper motor on pins 8 to 11 - Twinkle, Twinkle, Little Star on a passive buzzer (pin 9) - Read a knob - Digital piano - Fade an LED - First blink - IR decoder - Blink an LED on pin 13, once a second - Blink an LED on pin 3 - Blink an LED on pin 8 - Blink an LED on pin 9 - Breathing LED on pin 5 - Button on pin 12 lights the LED on pin 13 - Flowing lights on pins 2 to 9 - IR remote codes on pin 12 - IR receiver module on pin 11 - IR receiver on pin 2 - LED module on pin 7, blinking - An LED on the 5 V pin - Mood dial - Four brightnesses from PWM: pins 5, 6, 9 and 10 - RGB colors on pins 11, 10 and 9 - RGB LED on pins 3, 5 and 6 - RGB fade on pins 6, 5 and 3 - RGB LED module: red 11, blue 10, green 9 - Random colors on an RGB LED (pins 11, 10 and 9) - Set the LED on pin 11 from the serial monitor - A knob on A0 points the servo on pin 3 - Seven-segment digit on pins 4 to 11 - Thermometer: a thermistor on A0 - Traffic lights on pins 3, 4 and 5 - Two LEDs take turns on pins 4 and 5 - RGB color mixer - Arduino Uno blink - Button and LED - Grabbing candy bowl - Dreidel spinner - Push button on pin 12 lights the LED on pin 9 - A push button lights an LED, no code - Push button on pin 12 toggles the LED on pin 9 - Dinosaur game player: light sensor on A0, servo on 9 - Doorbell: button on pin 2, buzzer on pin 8 - Remote control light switch (IR on 12, servo on 11) - Joystick lights the way (LEDs on 8 to 11) - Four-key keyboard - Knob on A0 dims the LED on pin 9 - Photoresistor night light: A0 dims the LED on pin 9 - An LED on 5 V, with a multimeter on it - Series and parallel LEDs on 5 V - Light meter: photoresistor on A0, LEDs on pins 5 to 12 - Relay module on pin 8 - Three knobs mix an RGB LED (pins 11, 10 and 9) - Starship control panel - Traffic lights with a crossing button on pin 8 - Two buttons, one LED - Warm or cool light: a knob blends an RGB LED - Night light - Ofrenda candles - Piezo melody - Mini pump plant waterer - Dimmer - Night light with a light sensor - Eid greeting card - Message display gift - A button doorbell with a lamp, no code - On and off desk lamp: button on 7, relay on 2 - Metronome - Police lights and siren - Rescue beacon - Red envelope box Intermediate (59) - Two Arduino Unos talking over serial - Pi digits on an LCD - DC motor on an L293D (pins 5, 3 and 4) - Radar sweep: ultrasonic on 10 and 11, servo on 12 - RFID reader with an I2C LCD - Smart trash can: ultrasonic on 8 and 7, servo lid on 9 - Stepper follows a knob (pins 2 to 5) - LED I-V curve - Motor both ways - Stepper turntable - Arpeggiator - LED bar chaser - Electronic dice - Joystick bar graph - Hex digits on a common-anode display (74HC595, pins 11, 12, 13) - Countdown digit - Hex digits through a 74HC595 (pins 11, 8 and 12) - One-digit countdown on a 74HC595 (pins 2, 4 and 3) - One-digit countdown on a 74HC595 (pins 8, 10 and 9) - Falling rain on eight LEDs (74HC595, pins 11, 12 and 13) - Flowing light on a 74HC595 (pins 11, 8 and 12) - Eight LEDs on a 74HC595 (pins 12, 9 and 11) - Eight LEDs on a 74HC595 (pins 2, 5 and 4) - A light runs along eight LEDs on a 74HC595 (pins 11, 12 and 13) - Serial monitor drives eight LEDs (74HC595) - Type a digit: serial to a 74HC595 display (pins 11, 8 and 12) - Cyber dice: seven-segment on pins 2 to 8, button on 9 - Summer fan: four buttons and an L293D (pins 9 and 10) - Four-digit display on a 74HC595 (pins 8, 10 and 9) - Guess the number: IR remote and an I2C LCD - I2C LCD clock and thermometer - A knob drives a motor both ways through an L293D - Remote stepper - Remote stepper, a whole turn a press - Reversing radar: ultrasonic, buzzer and I2C LCD - Automatic soap dispenser: ultrasonic on 8 and 7, pump on 2 - Temperature alarm: thermistor on A0, RGB on 10, 11 and 12 - Thermometer on an I2C LCD - Morse code telegraph decoder - RFID door - Buffon's needle - Remote-controlled lamps - Photocell bar graph on a 74HC595 - Photoresistor bar graph on a 74HC595 (pins 9, 12 and 11) - Digital dice on a 74HC595 (pins 11, 8 and 12) - Three-speed fan on an L293D (pins 9 and 10) - Remote-controlled colors: IR on pin 2, RGB on 11, 10 and 9 - Photocell light meter - Quiz buzzer for three players - Looper - Servo turnouts with a panel - Reaction duel - Parking sensor - Tap-tempo metronome - ADSR synth - Reaction timer - Ringtone player - Ultrasonic water tank level monitor - Lion dance head Advanced (9) - Two Arduino Unos as an SPI master and slave - CAN bus dash reader - Stopwatch on a four-digit display - Stopwatch: four-digit display, digits on 10 to 13 - Four-digit counter - Four digits from one 74HC595 (pins 11, 12, 13 and 7 to 4) - Access control: RFID card opens a stepper door - Plant monitor: light, soil, temperature and a pump - Satellite tracker Level up ## Add a few parts, unlock more projects The smallest shopping lists that open the most new projects for the SunFounder Inventor Lab Kit. ### Add Addressable RGB LEDs Unlocks 13 more projects: - Diwali diya row - Marigold path - Hanukkah menorah - Rainbow to the pot of gold - LED sparkler - Tree topper star - and 7 more ### Add ili9341 and Addressable RGB LEDs Unlocks 25 more projects: - Diwali diya row - Marigold path - Hanukkah menorah - Rainbow to the pot of gold - LED sparkler - Tree topper star - and 19 more ### Add ili9341, Character LCD, 16x2 and Addressable RGB LEDs Unlocks 35 more projects: - LCD1602 on pins 4, 6 and 10 to 13 - LCD1602 on pins 7 to 12 - LCD1602 hello - Diwali diya row - Marigold path - Hanukkah menorah - and 29 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 Kepler Kit for Raspberry Pi Pico W 61 projects: - DHT11 temperature and humidity - DHT11 module on pin 4 - DHT11 temperature and humidity on pin 10 - Keypad on pins 11 to 4 - Membrane keypad on pins 9 to 2 - and 56 more ### With the Keyestudio 37 in 1 Sensor Kit 51 projects: - Bluetooth chat - Dusk switch - Alcohol sensor on A0 - Ambient light sensor on A0 - Button module on pin 3 lights the LED on 13 - and 46 more ### With the Freenove Ultimate Starter Kit for Raspberry Pi Pico 48 projects: - DHT11 temperature and humidity - DHT11 module on pin 4 - DHT11 temperature and humidity on pin 10 - Keypad on pins 11 to 4 - Membrane keypad on pins 9 to 2 - and 43 more ### With the Freenove Ultimate Starter Kit for ESP32-WROVER 45 projects: - DHT11 temperature and humidity - DHT11 module on pin 4 - DHT11 temperature and humidity on pin 10 - Keypad on pins 11 to 4 - Membrane keypad on pins 9 to 2 - and 40 more In the box ## The kit’s parts, and what plays them here The parts in the SunFounder Inventor Lab Kit, by the names its maker gives them. Each one is in the editor’s parts panel. - Arduino Uno R3 Arduino Uno R3 - Breadboard Full-size breadboard - Red, yellow and green LEDs LED - RGB LED RGB LED - 220 ohm and 10k ohm resistors Resistor - Buttons Pushbutton - Potentiometer Potentiometer - Active buzzer Buzzer - Passive buzzer Piezo speaker - Joystick module Thumb stick - Photoresistor Light sensor - Thermistor Thermistor, 10k NTC - Servo Hobby servo - Motor DC motor - L293D chip Motor driver, L293D - Pump Mini water pump - Relay module Relay module - I2C LCD1602 Character LCD with I2C backpack - Ultrasonic module Ultrasonic ranger - IR receiver Infrared receiver, VS1838B - Remote control Infrared remote, 21 buttons - 7-segment display Seven segment display - 4-digit 7-segment display Four-digit seven segment, multiplexed - 74HC595 74HC595 shift register - Soil moisture sensor Soil moisture sensor, capacitive - RFID module and tag RFID reader, MFRC522 - Stepper motor and ULN2003 module Stepper motor, 28BYJ-48 with ULN2003 - Multimeter Multimeter - Breadboard power module, 9 V battery and battery cable Not needed here: the Uno’s 5 V feeds the motor and the pump. - 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-inventor 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 sketches use the same libraries where the kit does. The code itself is written for this page, with comments that explain each step, 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. ELEGOO UNO R3 Super Starter Kit 25 lessons, 24 run in the browser ELEGOO UNO R3 Most Complete Starter Kit 48 lessons, 44 run in the browser Arduino Starter Kit 15 lessons, 15 run in the browser 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 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 SunFounder Kepler Kit for Raspberry Pi Pico W 63 lessons, 48 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