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.
⚠️Disclaimer:
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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Table of Contents
1. 🔋 Solar-Powered IoT Weather Station
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
Why It’s Trending:
Home safety and automation are rising concerns.
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
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
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
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)
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
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
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.
🔗 Useful Resources
- ESP32 Projects Collection
- AliExpress Component Deals
- Learn PCB Design for Beginners
- Voice Assistant with Raspberry Pi
- Securing the Future: A Beginner’s Guide to IoT and Embedded Security
- Power at the Edge: How Edge Computing is Revolutionizing Embedded Systems
📣 Stay Connected
Share this guide on Pinterest, Twitter, Reddit, or Facebook, and help the global DIY community grow stronger. If you build any of these, tag us at @labprojectsbd!
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