Over the past few weeks, I’ve been working on a small but exciting project, building a robot that can switch devices on and off using Bluetooth. It started as a simple idea: what if I could control a physical switch without touching it, just from my phone? That curiosity turned into a hands-on build that taught me a lot about electronics, coding, and patience.
The Idea 💡
We all use switches every day, whether it’s turning on a light, a fan, or any small appliance. I wanted to create a robot that could handle that task remotely. By using Bluetooth, I could send a command from my smartphone and let the robot do the rest, and press the switch for me.
How I Built It 🔧
The core of the project revolved around a few key components:
- Arduino Uno as the brain to process commands.
- HC-05 Bluetooth module to communicate with my phone.
- Servo motor to physically press the switch.
- A simple mobile app with ON/OFF buttons.
The workflow was straightforward: my phone sends a command → Bluetooth module receives it → Arduino interprets it → servo motor moves the arm → the switch is toggled.
While this was a fun prototype, I already have ideas for the next version:
- Upgrading from Bluetooth to Wi-Fi for wider control.
- Designing a custom app with a better interface.
- Adding smart features like scheduling or sensor-based automation
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