Sensor Projects

Electronics and sensors

Build no-solder sensor projects

Use the Arduino boards, breadboards, jumper wires, OLED display, and 37-in-1 sensor kit for small circuits first. Larger ideas can request extra components from the wider FIT inventory.

Back to MakerAccess Project Guides Open Maker Ideas Library Open 37-in-1 Sensor Lab Request components for a project

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Setup pictures

What each part does

Use the photos to match the physical parts before wiring anything.

Board

Start with the controllerThe Arduino board runs the code and provides the signal pins for the sensor, display, LED, button, or motor.Arduino Nano & Expansion Board

Prototype

Build without solderingUse a breadboard to make a temporary circuit first. Move one wire at a time and keep the power rails clear.Small Breadboard

Connect

Choose the jumper wireFemale-to-male wires connect many sensor modules to breadboard rows or Arduino headers.Female to Male 10 cm Wire

Output

Show readings clearlyAdd the OLED after the sensor works, then show a value such as distance, light level, or temperature.OLED Display

Sensors

Pick one module firstThe sensor kit is a library of inputs and outputs. Test one labelled module before combining several parts.37-in-1 Arduino Sensors Kit

Motion

Move something smallUse a servo only after the input circuit works. Keep the load light and check the angle before attaching arms.MG90 Servo Motor

Before wiring

Build one sensor at a time before combining several parts.

Connect ground first, then power, then signal wires.

Use the Arduino IDE or simulator to test simple code before adding a display or motor.

The local product photo does not show every sensor label clearly, so match each module against the insert or labels in the physical kit before wiring.

Connection maps

First circuits to copy

Start with one of these maps, then swap the sensor or output once the first reading works.

LED and resistor wiring

Use a resistor in series with the LED. The resistor can sit before or after the LED, but the circuit still needs one current-limiting resistor.

Open source

Push button with pull-down resistor

A button input needs a defined HIGH or LOW state. This map follows Arduino's Button example with a 10k pull-down resistor.

Open source

OLED I2C wiring

Most small I2C OLED displays use four wires: power, ground, SDA, and SCL. On an Uno, SDA is A4 and SCL is A5.

Open source

3-pin sensor module wiring

Most 37-in-1 modules start with VCC, GND, and one signal pin. Wire ground first, then power, then signal.

Open source

Servo signal and power

A servo needs power, ground, and one signal wire. Keep the grounds common, and avoid loading the Arduino 5V pin with heavy mechanical loads.

Open source

Component map

What to look for in the 37-in-1 kit

37-in-1 kits vary by supplier. Use this as a practical map, then check the exact module names in the box.

Controls

Digital push button
Capacitive touch sensor
Potentiometer module
Joystick module
Rotary encoder

Light and output

White LED module
RGB LED module
Traffic light module
4-digit LED display

Sound

Active buzzer
Passive buzzer
Analog sound sensor

Motion and distance

Line tracking sensor
Infrared obstacle avoidance sensor
Photo interrupter
PIR motion sensor
Ultrasonic distance sensor

Touch and vibration

Collision sensor
Knock sensor
Digital tilt sensor
Analog ceramic vibration sensor

Environment

Analog temperature sensor
Photocell module
Water level sensor
Soil moisture sensor
Steam moisture sensor
Flame sensor
Linear temperature sensor
DHT11 temperature and humidity module

Magnetic and infrared

Hall magnetic sensor
Reed switch
Digital IR receiver
Digital IR transmitter

Support and control

Motor module
Voltage detection module
Single relay module
Pulse rate monitor

37-in-1 module library

Open the full kit guide

The kit article has source photos for all 37 modules and subpages for each sensor or output.

Open 37-in-1 Sensor Lab

Beginner projects

Start with these projects

Use the listed components to build one working circuit at a time.

Room Monitor

Read temperature or humidity and show the result on the OLED display.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm WireWhite USB Type-C Cable

What this teaches

digital sensor readingsdisplay outputserial debugging

Open reference

Distance Meter

Use an ultrasonic sensor to measure distance, then display the value or show a colour warning.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm Wire

What this teaches

time of flightinput timingdisplay output

Open reference

Motion Alert

Trigger an LED or buzzer when motion is detected.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardLED KitFemale to Male 10 cm Wire

What this teaches

digital inputevent responsesimple alarm logic

Open reference

Reaction Game

Flash an LED, press a button as fast as possible, then show the reaction time.

Project components

Arduino Nano & Expansion BoardLED Kitx10 Push ButtonSmall BreadboardMale to Male 10 cm Wire

What this teaches

timingbutton inputstate changes

Open reference

Light Meter

Read a photoresistor module and display a brightness value.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm Wire

What this teaches

analog inputcalibrationthresholds

Open reference

Servo Gate

Use a joystick or button to move a servo arm like a small gate or pointer.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardMG90 Servo MotorFemale to Male 10 cm Wire

What this teaches

servo anglePWM signalmechanical load

Open reference

Parking Sensor

Use distance sensing with LED or buzzer feedback as an object gets closer.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardLED KitFemale to Male 10 cm Wire

What this teaches

distance thresholdsfeedbackdebugging one sensor at a time

Open reference

Desk Alarm

Use a tilt, vibration, touch, or knock sensor to detect movement on a desk object.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardLED KitFemale to Male 10 cm Wire

What this teaches

switch sensorsdebouncingalarm latch

Open reference

Mini Controller

Use the joystick or buttons as a small controller and show direction or values on the OLED.

Project components

37-in-1 Arduino Sensors KitArduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm Wire

What this teaches

analog X/Y inputbutton statescreen menus

Open reference

Advanced ideas

Projects that may need requested components

These cards only list extra components that are present in the wider FIT guide inventory.

RFID Check-In Demo

Read a card or tag, then show an access message on the display.

Project components

Arduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm Wire

Requestable FIT components

RFID RC522 module

What this teaches

SPI wiringunique IDsaccess logic

Request components for this project

Open reference

NFC Object Tags

Attach tags to objects, then build a lookup or scavenger-hunt activity around them.

Project components

Arduino Nano & Expansion BoardOLED DisplayFemale to Male 10 cm Wire

Requestable FIT components

NFC sticker tagsRFID RC522 module

What this teaches

tag IDsobject metadatareader feedback

Request components for this project

Open reference

Micro:bit Remix

Use Micro:bit projects as a fast block-coding route, then compare them with Arduino builds.

Project components

LED Kitx10 Push ButtonWhite USB Type-C Cable

Requestable FIT components

Micro:bit starter kit

What this teaches

event-driven programmingbuilt-in sensorsblock-to-code learning

Request components for this project

Open reference

Large Breadboard Prototype

Move a working small circuit onto a longer breadboard when it needs clearer wiring or more space.

Project components

Arduino Nano & Expansion BoardLED Kitx10 Push ButtonMale to Male 10 cm Wire

Requestable FIT components

Breadboard longUno/Nano shield

What this teaches

layout planningpower railssignal routing

Request components for this project

Open reference

Simulators and references

Learn before wiring

Use the simulator links and source references before connecting real modules.

Keyestudio 37-in-1 sensor kit guide
Cytron Keyestudio 37-in-1 sensor kit module list
KY-numbered 37-in-1 kit: datasheets and original examples
Arduino Project Hub: weather station with OLED
Arduino Project Hub: ultrasonic sensor starter
Arduino Project Hub: photoresistor and LED
Arduino Project Hub: joystick and micro servo
Arduino Software
Wokwi Arduino simulator
Tinkercad Circuits guide

Sensor Projects

Build no-solder sensor projects

Help improve MakerAccess

What each part does

Before wiring

First circuits to copy

LED and resistor wiring

Push button with pull-down resistor

OLED I2C wiring

3-pin sensor module wiring

Servo signal and power

What to look for in the 37-in-1 kit

Controls

Light and output

Sound

Motion and distance

Touch and vibration

Environment

Magnetic and infrared

Support and control

Open the full kit guide

Start with these projects

Room Monitor

Distance Meter

Motion Alert

Reaction Game

Light Meter

Servo Gate

Parking Sensor

Desk Alarm

Mini Controller

Projects that may need requested components

RFID Check-In Demo

NFC Object Tags

Micro:bit Remix

Large Breadboard Prototype

Learn before wiring

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