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QuadBee - Defend Your Country!

Slava Ukraini! All funds gained from donations and affiliate commission will be going to Ukraine.

Updated 2026-05-10 09:03:33

Arduino TM1637 clock

# Build a 7-segment digital clock with Arduino, TM1637 and DS3231 A four-digit red 7-segment display, an RTC module that won't drift more than a minute a year, and an Ard…

Updated 2026-05-06T09:08:20

Arduino air quality monitor

# Build an air quality monitor with Arduino, MQ-135, and an OLED display A pocket-sized desk gadget that reads the gunk in your indoor air and shows it as a number plus a…

Updated 2026-05-05T23:43:44

Line-following robot with Arduino and IR sensors

# Build a line-following robot with Arduino and IR sensors A two-IR-sensor line follower is the "hello world" of mobile robotics: a small two-wheeled chassis that watches…

Updated 2026-05-05T23:17:41

Arduino servo radar

# Build a sweeping radar with Arduino, a micro servo, and an HC-SR04 A servo nods an ultrasonic sensor back and forth across 180°. The Arduino takes a distance reading at…

Updated 2026-05-05T09:08:37

ESP32 home temperature dashboard

# Build an ESP32 home temperature dashboard with multiple DHT22 sensors <MAKER:photo slot="finished-build" alt="ESP32 board wired to a DHT22 sensor on a breadboard, with …

Updated 2026-05-04T21:04:16

Arduino laser tripwire alarm

# Build a laser tripwire alarm with Arduino and an LDR Point a cheap laser diode at a photoresistor, watch the analog reading on an Arduino, and scream through a buzzer w…

Updated 2026-05-04T09:05:42

Arduino fingerprint door lock

# Build a fingerprint door lock with Arduino and an R503 sensor <MAKER:photo slot="finished-build" alt="Assembled R503 fingerprint sensor with illuminated LED ring — the …

Updated 2026-05-03T21:06:09

Bluetooth RC car with Arduino + L298N

# Build a Bluetooth-controlled RC car with Arduino A weekend build that actually delivers: an Arduino Uno reading single-character commands ("F", "B", "L", "R", "S") over…

Updated 2026-05-02T21:05:43

Pulse oximeter with Arduino + MAX30102

# Build a pulse oximeter with Arduino and the MAX30102 <MAKER:photo slot="finished-build" alt="Finished Arduino pulse oximeter showing BPM and SpO2 readings on an OLED di…

Updated 2026-05-02T09:04:35

Essential tools for the maker bench

<MAKER:photo slot="cover" alt="A maker bench with essential hand tools laid out — soldering iron, drivers, cutters, multimeter"/> # Essential tools for the DIY maker benc…

Updated 2026-05-02T08:52:56

Ultrasonic distance meter with HC-SR04 and OLED

# Build an Arduino ultrasonic distance meter (HC-SR04 + OLED) A pocket-sized distance meter for under €10 in parts, built in an evening. Point it at a wall, read centimet…

Updated 2026-05-01T22:11:57

WS2812B LED clock with Arduino and RTC

# Build a smart WS2812B LED clock with Arduino and an RTC A 60-LED ring driven by an Arduino Nano with a DS3231 backing it up — the result is an analog-style clock that d…

Updated 2026-05-01T22:11:56

Weather station with BME280 and ESP32

# Build a Wi-Fi weather station with ESP32 and BME280 A pocket-sized weather station that pushes temperature, humidity, and barometric pressure to a web page on your loca…

Updated 2026-05-01T22:11:54

Arduino RFID door lock with RC522 and servo

# Build an Arduino RFID door lock with RC522 and servo A near-field card reader, a hobby servo, and ~80 lines of Arduino code is all you need for a working RFID-gated loc…

Updated 2026-05-01T22:11:48

Build a moisture-sensing plant waterer with Arduino

# Build a moisture-sensing automatic plant waterer with Arduino A pot, a probe, a pump, and ~$15 of parts. The Arduino reads soil moisture every few seconds and kicks a r…

Updated 2026-05-01T21:57:27

Soldering & heat insert guide

Guide page for Soldering & heat insert guide.

Setting up your maker bench

Guide page for Setting up your maker bench.