Source: https://mokxi.com/kits/companion/freenove-ultimate-starter-kit Updated: 2026-11-07 Kits / Kit companions Kit companion # Freenove Ultimate Starter Kit: every lesson, simulated Every project in the tutorial, chapter by chapter, as a circuit that runs in your browser on the pins the sketch uses: from a push button and an LED to a keypad lock, a remote-controlled dimmer and four digits from one shift register. Open the first lesson Find your lesson What else it can build Not affiliated with Freenove. 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 online tutorial for FNK0017, the kit with the Uno-compatible control board. Each circuit uses the kit’s parts on the pins the lesson uses. 42 of the 42 lessons with a circuit run here, 7 of them with a change we name. 1.1 ### Control LED with Manual Button Runs here A push button, a 220 ohm resistor and an LED from the board’s 5 V: the button closes the loop, no code at all. Open in the editor A push button lights an LED, no code 1.2 ### Control LED with Control Board Runs here An LED on pin 13 blinks once a second, together with the board’s own LED on the same pin. Open in the editor Blink an LED on pin 13, once a second 2.1 ### Two LEDs Blink Runs here LEDs on pins 4 and 5 take turns, written first in loop() and then as a function with parameters. Open in the editor Two LEDs take turns on pins 4 and 5 3.1 ### LED Bar Graph Display Runs here A ten-bar LED graph on pins 3 to 12, a resistor each: one bar runs up the graph and back, from an array of pins. Open in the editor LED bar graph on pins 3 to 12 4.1 ### LEDs Emit Different Brightness Runs here Four LEDs on the PWM pins 5, 6, 9 and 10 at 2, 10, 50 and 100 percent duty cycle. Open in the editor Four brightnesses from PWM: pins 5, 6, 9 and 10 4.2 ### LED Blinking Smoothly Runs here The LED on pin 5 fades up and down like breathing, with analogWrite in two for loops. Open in the editor Breathing LED on pin 5 5.1 ### Control LED with Push Button Switch Runs here A push button on pin 12 with a 10k pull-up lights the LED on pin 9 while it is held. The lesson puts a second 10k between the button and pin 12 to protect the pin; it changes nothing the sketch reads, so it is left out. Open in the editor Push button on pin 12 lights the LED on pin 9 5.2 ### Change LED State with Push Button Switch Runs here Each press flips the LED on pin 9, with the contact’s bounce filtered out in the sketch. The lesson puts a second 10k between the button and pin 12 to protect the pin; it changes nothing the sketch reads, so it is left out. Open in the editor Push button on pin 12 toggles the LED on pin 9 6.1 ### Send Data through Serial Runs here The board prints to the serial monitor: the first step of every project that reports a reading. Open the guided lesson 6.2 ### Receive Data through Serial Port Runs here Type into the serial monitor and the board repeats each character, while a counter keeps ticking. Open in the editor Serial echo: the board repeats what you type 6.3 ### Application of Serial Runs here Type a number from 0 to 255 and the LED on pin 11 takes that brightness. Open in the editor Set the LED on pin 11 from the serial monitor 7.1 ### ADC Runs here A potentiometer on A0, its reading and its voltage printed to the serial monitor. Open in the editor Read a knob 7.2 ### Control LED by Potentiometer Runs here The potentiometer on A0 sets the brightness of the LED on pin 9. Open in the editor Knob on A0 dims the LED on pin 9 7.3 ### Control LED through Photoresistor Runs here A photoresistor and a 10k on A0 set the brightness of the LED on pin 9. Open in the editor Photoresistor night light: A0 dims the LED on pin 9 8.1 ### Control RGB LED through Potentiometer Runs here Three potentiometers on A0, A1 and A2 mix red, green and blue on pins 11, 10 and 9. Open in the editor Three knobs mix an RGB LED (pins 11, 10 and 9) 8.2 ### Multicolored LED Runs here The RGB LED on 11, 10 and 9 jumps to a random color twice a second. Open in the editor Random colors on an RGB LED (pins 11, 10 and 9) 9.1 ### Active Buzzer Runs here A button on pin 12 sounds an active buzzer switched by an NPN transistor from pin 9. Open in the editor Transistor doorbell: button on 12, buzzer on 9 9.2 ### Passive Buzzer Runs here A passive buzzer behind the transistor on pin 9 wails like an alarm, its pitch following a sine wave. Open in the editor Passive buzzer alarm on pin 9, through a transistor 10.1 ### Control Motor by Relay Runs here The button on pin 12 flips a relay through a transistor on pin 9, and the relay runs a motor from two AA cells. The indicator LED is lit through the relay’s second contact here. Open in the editor Relay switches a motor: button on 12, relay on 9 10.2 ### Control Motor with L293D Runs, with a change A potentiometer on A0 drives a motor both ways on an L293D: inputs on 10 and 9, enable on 11. The motor supply comes from the Uno’s 5 V here. The simulated L293D, like the chip’s datasheet, needs at least 4.5 V on VCC2, more than two AA cells give. Open in the editor A knob drives a motor both ways through an L293D 11.1 ### Servo Sweep Runs here A servo on pin 3 sweeps from 0 to 180 degrees and back with the Servo library. Open in the editor Servo sweep on pin 3 11.2 ### Control Servo with Potentiometer Runs here A potentiometer on A0 points the servo on pin 3. Open in the editor A knob on A0 points the servo on pin 3 12.1 ### Detect the Temperature Runs here A thermistor and a 10k on A0; the beta equation turns the reading into kelvin and Celsius. Open in the editor Thermometer: a thermistor on A0 13.1 ### Joystick Runs here A joystick with X on A0, Y on A1 and its switch on pin 8, printed to the serial monitor. Open in the editor Joystick on A0, A1 and pin 8 14.1 ### Acceleration Detection Runs, with a change An MPU6050 on the I2C pins reports its raw acceleration and rotation. The sketch here reads the chip with Wire alone rather than the I2Cdev library, and does not blink pin 13. Open in the editor MPU-6050 readings over I2C 15.1 ### 74HC595 Runs, with a change A 74HC595 with DS on 11, ST_CP on 12 and SH_CP on 13 walks a light along eight outputs. Eight separate LEDs stand in for eight bars of the kit’s LED bar graph. Open in the editor A light runs along eight LEDs on a 74HC595 (pins 11, 12 and 13) 15.2 ### LED Matrix Runs here An 8x8 LED matrix: a 74HC595 drives the rows and pins 2 to 9 the columns, scanned fast enough to draw a smiley and scroll digits. Open in the editor A smile and scrolling digits on an 8x8 matrix (74HC595 rows, pins 2 to 9 columns) 16.1 ### Display the String on LCD1602 Runs here An I2C LCD1602 on A4 and A5 at address 0x27: write a line and a counter on it. Open in the editor I2C LCD1602: find its address, then say hello 16.2 ### I2C LCD1602 Clock Runs, with a change A clock kept by a timer interrupt and the temperature from a thermistor on A0, on the I2C LCD. Set the time from the serial monitor. The timer interrupt comes from MsTimer2 here; the lesson uses FlexiTimer2, which works the same way. Open in the editor I2C LCD clock and thermometer 17.1 ### 1-digit 7-segment Display Runs here A common-anode digit on a 74HC595 (DS 11, ST_CP 12, SH_CP 13) counts through 0 to F. One 220 ohm on the common pin stands in for the lesson’s resistor on every segment. Open in the editor Hex digits on a common-anode display (74HC595, pins 11, 12, 13) 17.2 ### 4-digit 7-segment Display Runs here Four common-anode digits: a 74HC595 sets the segments and pins 7 to 4 pick the digit, multiplexed. Open in the editor Four digits from one 74HC595 (pins 11, 12, 13 and 7 to 4) 18.1 ### Drive Stepper Motor Runs, with a change A 28BYJ-48 on its ULN2003 board, driven from pins 8 to 11. Here IN1 to IN4 are on pins 8 to 11; the lesson wires them to 11 to 8, which only changes which way the shaft turns first. Open in the editor Stepper motor on pins 8 to 11 19.1 ### Get Input Characters Runs here A 4x4 keypad with rows on pins 11 to 8 and columns on 7 to 4, each key printed as you press it. Open in the editor Keypad on pins 11 to 4 19.2 ### Combination Lock Runs here Type 1234 and a servo on pin 12 opens the lock; a buzzer on pin 13 clicks for each key and sounds for a wrong code. Open in the editor Combination lock: keypad, servo bolt and buzzer 20.1 ### Detect Vibration Runs here A shake on pin 3 fires an interrupt, and the buzzer on pin 13 chirps. Open in the editor Vibration alarm: a spring switch on pin 3, a buzzer on 13 21.1 ### Infrared Remote Control Runs here An IR receiver on pin 12 prints each remote button’s code, like the table in the lesson. Open in the editor IR remote codes on pin 12 21.2 ### Control LED through Infrared Remote Runs here Remote buttons 0 to 3 set the LED on pin 5 from off to full, and the buzzer on 13 clicks for each code. Open in the editor Remote dimmer: IR on 12, LED on 5, buzzer on 13 22.1 ### Temperature & Humidity Sensor Runs here A DHT11 on pin 10 reports humidity and temperature once a second. The sketch uses the common DHT library rather than the lesson’s dht library; the readings are the same. Open in the editor DHT11 temperature and humidity on pin 10 23.1 ### Infrared Motion Sensor Runs here An HC-SR501 on pin 12 lights the LED on pin 13 while it sees movement. Open in the editor Motion sensor on pin 12 lights the LED on 13 24.1 ### Ultrasonic Ranging Runs here An HC-SR04 with TRIG on 12 and ECHO on 11 prints the distance in centimeters. Open in the editor Ultrasonic distance on pins 12 and 11 25.1 ### Solder a Buzzer Runs, with a change A push button sounds a buzzer and lights an LED from 5 V, no code. Built on a breadboard here; the lesson solders it on a perfboard. Open in the editor A button doorbell with a lamp, no code 25.2 ### Solder a Flowing Water Light Runs, with a change A 74HC595 and eight LEDs show a falling drop of light, its tail faded by software PWM. Built on a breadboard here; the lesson solders the 74HC595 and the LEDs on a perfboard. Open in the editor Falling rain on eight LEDs (74HC595, pins 11, 12 and 13) Lesson list and pins read from Freenove’s online tutorial. The explanations on this page are our own. Learning path ## Everything the Freenove Ultimate Starter Kit can build 177 projects use only the parts in this box, ordered from a first blink to the hardest. Beginner (100) - EEPROM: memory that survives a reset - Serial echo: the board repeats what you type - Active buzzer - Active buzzer module on pin 3 - DHT11 temperature and humidity - DHT11 module on pin 4 - DHT11 temperature and humidity on pin 10 - 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 - Keypad on pins 11 to 4 - Membrane keypad on pins 9 to 2 - Morse code on an active buzzer (pin 9) - MPU-6050 readings over I2C - Passive buzzer scale on pin 12 - Passive buzzer module on pin 3 - Passive buzzer on pin 8 - Motion sensor on pin 3 lights the LED on 13 - Motion sensor on pin 12 lights the LED on 13 - Pomodoro timer on an active buzzer (pin 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 bar graph on pins 3 to 12 - 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 - Passive buzzer alarm on pin 9, through a transistor - 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 - Light meter: photoresistor on A0, LEDs on pins 5 to 12 - PIR motion light - Motion night light (PIR on 12, RGB on 5, 6 and 9) - 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 - Motion light - Night light - Ofrenda candles - Piezo melody - Dimmer - Night light with a light sensor - Eid greeting card - Message display gift - A button doorbell with a lamp, no code - Transistor doorbell: button on 12, buzzer on 9 - Vibration alarm: a spring switch on pin 3, a buzzer on 13 - Metronome - Police lights and siren - Rescue beacon - Relay on pin 8 through a transistor - Red envelope box Intermediate (67) - Two Arduino Unos talking over serial - DHT11 on A0, read with no library - 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 - Smart trash can: ultrasonic on 8 and 7, servo lid on 9 - Stepper follows a knob (pins 2 to 5) - Motor both ways - Stepper turntable - Weather station - Arpeggiator - LED bar chaser - Electronic dice - Joystick bar graph - Kalman filter tilt angle with an MPU6050 - 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 - Relay switched by an L293D (pins 5, 3 and 4) - Remote stepper - Remote stepper, a whole turn a press - Reversing radar: ultrasonic, buzzer and I2C LCD - Temperature alarm: thermistor on A0, RGB on 10, 11 and 12 - Thermometer on an I2C LCD - Level meter - Morse code telegraph decoder - Tilt meter - 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 - Motor on a transistor - Servo turnouts with a panel - Reaction duel - Parking sensor - Tap-tempo metronome - ADSR synth - Combination lock: keypad, servo bolt and buzzer - Reaction timer - Ringtone player - Remote dimmer: IR on 12, LED on 5, buzzer on 13 - Relay switches a motor - Spinning zoetrope - Lion dance head - Torque angle meter - Relay switches a motor: button on 12, relay on 9 Advanced (10) - 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 - MPU6050 servo stabilizer - Four digits from one 74HC595 (pins 11, 12, 13 and 7 to 4) - 4x4x4 LED cube - Countdown timer on a four-digit display - Satellite tracker Level up ## Add a few parts, unlock more projects The smallest shopping lists that open the most new projects for the Freenove Ultimate Starter Kit. ### Add Addressable RGB LEDs Unlocks 15 more projects: - Diwali diya row - Marigold path - Hanukkah menorah - Rainbow to the pot of gold - LED sparkler - Tree topper star - and 9 more ### Add ili9341 and Addressable RGB LEDs Unlocks 28 more projects: - Diwali diya row - Marigold path - Hanukkah menorah - Rainbow to the pot of gold - LED sparkler - Tree topper star - and 22 more ### Add ili9341, Character LCD, 16x2 and Addressable RGB LEDs Unlocks 39 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 33 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 Keyestudio 37 in 1 Sensor Kit 45 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 40 more ### With the Kitronik Inventor’s Kit for the Raspberry Pi Pico 43 projects: - MicroPython joystick on a Pico: X, Y and the press - MicroPython I2C LCD1602 on a Pico, GP14 and GP15 - DHT11 on a Pico with MicroPython - MicroPython DHT11 on a Pico: temperature and humidity - MicroPython flowing light on a Pico’s LED bar graph - and 38 more ### With the SunFounder Kepler Kit for Raspberry Pi Pico W 35 projects: - RC522 RFID reader (SS 10, RST 9) - Water level sensor - Tilt switch on pin 3 lights the LED on 13 - Touch piano - Diwali diya row - and 30 more ### With the SunFounder ESP32 Ultimate Starter Kit 34 projects: - Line tracking sensor on pin 3 - Obstacle sensor on pin 3 lights the LED on 13 - MicroPython flowing light on a ten-segment LED bar - Tilt switch on pin 3 lights the LED on 13 - Diwali diya row - and 29 more In the box ## The kit’s parts, and what plays them here The parts in the Freenove Ultimate Starter Kit, by the names its maker gives them. Each one is in the editor’s parts panel. - Control board (Uno compatible) Arduino Uno R3 - Breadboard Full-size breadboard - LEDs LED - LED bar graph LED bar graph, 10 segments - RGB LED RGB LED - 220 ohm, 1k and 10k resistors Resistor - Push buttons Pushbutton - Rotary potentiometers Potentiometer - Photoresistor Light sensor - Thermistor Thermistor, 10k NTC - NPN transistors Transistor (NPN or PNP) - Diode Diode - Active buzzer Buzzer - Passive buzzer Piezo speaker - Relay DPDT relay - Motor DC motor - L293D Motor driver, L293D - AA battery holder Battery: AA, coin cell, LiPo - Servo Hobby servo - Joystick Thumb stick - MPU6050 module Accelerometer and gyroscope, MPU6050 - 74HC595 74HC595 shift register - I2C LCD1602 module Character LCD with I2C backpack - 1-digit 7-segment display Seven segment display - 4-digit 7-segment display Four-digit seven segment, multiplexed - Stepper motor and driver board Stepper motor, 28BYJ-48 with ULN2003 - 4x4 keypad Keypad, 4x4 - Vibration switch Spring vibration switch, SW-18010P - Infrared receiver Infrared receiver, VS1838B - Infrared remote Infrared remote, 21 buttons - DHT11 Temperature and humidity, DHT22 Set to DHT11 in these circuits. - Infrared motion sensor (HC-SR501) Motion sensor - Ultrasonic ranging module (HC-SR04) Ultrasonic ranger - LED matrix Not simulated yet; the MAX7219 matrix module is. - Perfboard, pin headers and soldering parts The soldering projects are built on a breadboard here. - 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/freenove-ultimate 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 Freenove? No. Mokxi is independent and is not affiliated with Freenove. 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 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 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