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)

Intermediate (67)

Advanced (10)

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:

Add ili9341 and Addressable RGB LEDs

Unlocks 28 more projects:

Add ili9341, Character LCD, 16x2 and Addressable RGB LEDs

Unlocks 39 more projects:

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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)

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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.