In our previous guide, we explored some of the most exciting electronics DIY projects. Now, here’s a follow-up featuring 10 more DIY trending electronics projects—perfect for hobbyists, makers, and engineers in 2025. These ideas are practical, and innovative, and offer opportunities to sharpen your electronics, coding, and IoT skills.

🚀 Each of these projects is designed to be affordable and compatible with platforms like Arduino, ESP32, and Raspberry Pi.

Working with electricity involves serious risk. Ensure you have the necessary skills and take proper safety precautions before attempting any electrical projects. Proceed at your own risk — the author assumes no responsibility for any damage, injury, or issues resulting from the use or misuse of the information provided.

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1. 🔋 Solar-Powered IoT Weather Station

Trending DIY Electronics Projects

Why It’s Trending:

Sustainability and off-grid monitoring are becoming crucial in climate tech.

What You Can Build:

  • Log temperature, humidity, and light levels
  • Send data to the cloud with ESP32 + solar panel

Tools Needed:

  • ESP32 + DHT11/DHT22 sensor
  • BH1750 light sensor
  • Solar panel + Li-ion battery + TP4056 module
  • ThingSpeak / Blynk for visualization

Mini How-To:

Measure data at intervals, store locally, and upload via Wi-Fi when power is available.

Related Read:


2. 🛡️ Fire and Gas Leak Detector with Alert System

Trending DIY Electronics Projects

Why It’s Trending:

Home safety and automation are rising concerns.

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What You Can Build:

  • Real-time fire and LPG gas alert system
  • Optional SMS or Blynk notification

Tools Needed:

  • Arduino/ESP32
  • MQ-2/MQ-6 gas sensor
  • Flame sensor
  • Buzzer and LED
  • GSM module (SIM800L) or Wi-Fi

Mini How-To:

Continuously monitor sensor values; trigger an alarm and alert when the threshold exceeds.


3. 📷 ESP32-CAM Doorbell with Face Recognition

Trending DIY Electronics Projects

Why It’s Trending:

Affordable smart security solutions are in demand.

What You Can Build:

  • Take a photo/video when the doorbell is pressed
  • Face detection or recognition
  • Email or Telegram image alerts

Tools Needed:

  • ESP32-CAM
  • Push button
  • PIR sensor (optional)
  • MicroSD card

Mini How-To:

Use ESP32-CAM firmware and integrate with the Telegram bot or email SMTP server.


4. 🧠 Brain-Controlled Switch using EEG Sensor

Trending DIY Electronics Projects

Why It’s Trending:

Neurotechnology is emerging in consumer tech.

What You Can Build:

  • Control a light or relay with brain signals
  • Focus-based activation

Tools Needed:

  • Neurosky MindWave headset
  • Arduino Uno
  • Relay module
  • Bluetooth module

Mini How-To:

Read EEG via Bluetooth, analyze attention value, and trigger relay above the threshold.


5. 🧹 DIY Robot Vacuum Cleaner

Trending DIY Electronics Projects

Why It’s Trending:

Affordable alternatives to expensive Roombas are a hit with makers.

What You Can Build:

  • Robotic vacuum that avoids obstacles and cleans
  • Basic mapping capability

Tools Needed:

  • Arduino Mega / ESP32
  • Ultrasonic sensor array
  • Vacuum pump motor
  • Chassis + wheels

Mini How-To:

Program obstacle avoidance and regular movement patterns; activate vacuum motor on flat surfaces.


6. 🎮 Custom Game Controller (Bluetooth HID)

Trending DIY Electronics Projects

Why It’s Trending:

Gaming and customization are booming.

What You Can Build:

  • Fully custom-designed controller
  • Wireless Bluetooth HID interface

Tools Needed:

  • ESP32
  • Buttons, joystick
  • Bluetooth HID library

Mini How-To:

Use Arduino BLE HID to register the ESP32 as a game controller.


7. 🌐 Offline Chat Device with LoRa

Trending DIY Electronics Projects

Why It’s Trending:

Great for rural areas or emergency communication.

What You Can Build:

  • Chat messaging between two LoRa modules
  • Encrypted or plain text

Tools Needed:

  • Arduino Nano + LoRa SX1278
  • OLED display
  • Keypad or buttons

Mini How-To:

Use LoRa libraries to send/receive messages between nodes. Display on OLED.


8. 🧰 DIY Digital Multimeter

Trending DIY Electronics Projects

Why It’s Trending:

Educational and cost-effective for labs.

What You Can Build:

  • Measure voltage, current, resistance
  • Show on OLED or LCD

Tools Needed:

  • Arduino Nano
  • 0.96″ OLED / 16×2 LCD
  • A voltage divider, ACS712 current sensor, resistor bridge

Mini How-To:

Scale analog inputs and convert them to engineering units. Use buttons to switch modes.


9. 📱 Touchless Gesture-Controlled Switch

Why It’s Trending:

COVID accelerated touch-free tech.

What You Can Build:

  • Use gestures to turn on/off lights, fans, etc.
  • Works using IR or ultrasonic sensors

Tools Needed:

  • APDS-9960 / Ultrasonic sensor
  • Arduino / ESP32
  • Relay module

Mini How-To:

Detect swipe gestures and map to digital outputs.


10. 📦 Smart Parcel Box with OTP Lock

Why It’s Trending:

Online shopping needs smart delivery security.

What You Can Build:

  • The lock opens only with OTP sent via SMS or app
  • Notifies owner of delivery

Tools Needed:

  • ESP32 or Arduino + GSM
  • Solenoid lock
  • Keypad
  • OLED display

Mini How-To:

GSM module receives OTP. Only unlocks if the user enters the correct code.


🔄 Final Words

Each of these DIY projects not only helps you learn key embedded and electronics skills, but also has potential for content creation, side hustle products, and even open-source collaboration. Share your build logs, join maker communities, and innovate!

Stay connected to LabProjectsBD for more deep-dive guides and tutorials.


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MKDas

Mithun K. Das. B.Sc. in Electrical and Electronic Engineering (EEE) from KUET. Senior Embedded Systems Designer at a leading international company. Welcome to my personal blog! I share articles on various electronics topics, breaking them down into simple and easy-to-understand explanations, especially for beginners. My goal is to make learning electronics accessible and enjoyable for everyone. If you have any questions or need further assistance, feel free to reach out through the Contact Us page. Thank you for visiting, and happy learning!

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