Sensor module

4-digit LED display

Module 37 in the 37-in-1 kit. Shows numbers for counters, scores, or timers. It works well as a first experiment before combining sensors into a larger build.

Back to 37-in-1 kit Open sensor projects Open source guide

What you need

Starter parts

Keep the first circuit small and add displays or motors later.

Arduino UnoControls sensors, motors, lights, and code-driven electronics prototypes.

White USB Type-C CableConnects or powers USB-C devices, boards, chargers, and project accessories.

Female to Male 10 cm Wire10 cm Jumper Wire for connecting breadboards to male-pin modules or sensors.

37-in-1 Arduino Sensors KitExplore light, sound, motion, touch, and environmental sensing with Arduino projects.

Concept

Multiplexed displays refresh digits quickly so they appear steady.

Try first

Display a counting number.

This is the quickest way to see the module reading change.

Connect ground, power, and signal according to the labelled pins and the source guide.

Upload a simple sketch or use a simulator to print the reading in the serial monitor.

Change the physical condition the module senses and watch the reading or output respond.

Build next

Make a reaction-game timer or distance readout.

Turn the raw reading into a small useful interaction.

Add the OLED display when the reading is stable.

Use an LED, buzzer, servo, or motor only after the sensor input works by itself.

Write down the value range you see so your thresholds match the real room and module.

Reference

Source guide

Use the source guide for the exact wiring diagram and starter code.

Keyestudio project 37: 4-digit LED displayhttps://docs.keyestudio.com/projects/KS0487/en/latest/ks0487.html

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4-digit LED display

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