Person standing in front of a custom-built smart mirror

Gadgets

how to build your own smart mirror

By Sarah Miller

Published: 04 Mar 2025

My "Smart" Start: A Refrigerator and a Sticky Note

Let's be honest, my journey into the world of smart mirrors didn't begin with sleek, futuristic technology. It started with a refrigerator, a sticky note, and a desperate need to get organized. I'd constantly forget appointments, grocery lists would vanish into the abyss of my chaotic kitchen, and my schedule was a mess. So, one day, in a flash of inspiration (or maybe sheer desperation), I started scribbling my appointments on a sticky note and sticking it to the fridge. It worked, surprisingly well, at least better than my memory! That's when the seed of a 'smart' mirror idea was planted. But, hey, small steps, right?

sticky note on a refrigerator

sticky note on a refrigerator | Image: Supplied

The Allure of the Smart Mirror: Why I Wanted One

The idea of a smart mirror fascinated me. Imagine: one central place to check the weather, my calendar, news headlines—without even having to unlock my phone. No more frantic searches for my glasses in the morning, because the mirror could display the time, a quick peek at my schedule, and even maybe the traffic update (though I still frequently get stuck in traffic...). It felt like a leap towards a smoother, more organized life, and who doesn't want that, amiright? I was sold. But building one? That felt a bit more daunting.

Person looking at a smart mirror

Person looking at a smart mirror | Image: Supplied

Gathering My Arsenal: The Essential Components

So, I started researching. The beauty (and terror) of DIY projects is the vast amount of options. It felt like choosing a flavor from a neverending ice cream menu! After some deliberation (and many YouTube tutorials—let's be real), I settled on these essentials:

  • A Two-Way Mirror: This is the heart of the project. You'll need a mirror that's slightly reflective and lets light through from the other side. Plenty of online sellers offer various sizes.
  • Raspberry Pi 4: The brains of the operation, a small but mighty computer that acts as the control hub.
  • A Display Screen: This will be placed behind the mirror, displaying all the information. Choose one that matches your mirror's size for optimal results.
  • Power Supply: An adequately sized power supply for the Raspberry Pi and display.
  • Mounting Materials: You'll need something to securely mount the screen and Raspberry Pi behind the mirror; some sturdy fasteners will do the trick.
  • Software and Wiring: This will require some tech know-how, my friends. If you aren't comfortable soldering, be sure to find someone to help you out!
Raspberry Pi and other electronic components

Raspberry Pi and other electronic components | Image: Supplied

The Build Process: A Step-by-Step Guide

Okay, deep breaths. This isn't brain surgery (though it might feel like it at times). This process is going to test you, especially if you're not an electronics whiz. Trust me on this!

  1. Prepare the Mirror: Carefully clean the back of your two-way mirror to create a clean surface. This part is crucial because you'll be mounting other components on there.
  2. Mount the Display: Securely attach your display to the back of the mirror, making sure it's positioned correctly. Alignment is key here, so take your time. I made a couple of alignment mistakes, which I had to redo later on.
  3. Connect the Raspberry Pi: Wire the Raspberry Pi to the display, ensuring everything is properly connected. This stage requires attention to detail; double, triple, even quadruple-check your connections, because this is where a lot of things can go wrong!
  4. Install Software: This is where you'll need some tech know-how. You'll need to install the operating system (such as Raspberry Pi OS) and the required software for controlling the mirror's display. There are plenty of tutorials online—I'll link some in the comments below.
  5. Configure the Software: This is where the magic happens. You'll customize the software to display what you want—calendar, weather, news, and so on. It was so satisfying to watch everything slowly come together.
  6. Test and Refine: Test your creation and fine-tune the software as needed. Don't be surprised if you encounter some bumps along the way. Even the pros mess up sometimes.

I'm going to be honest, some steps felt utterly frustrating. Like the time I shorted a wire and accidentally fried a component... oops. That was an expensive lesson.

Person assembling a smart mirror

Person assembling a smart mirror | Image: Supplied

Beyond the Basics: Adding Extra Features

Once you have the foundation, the possibilities are endless! Think about adding these fun extras:

  • Voice Control: Integrate voice assistants for hands-free operation. Imagine telling your mirror to show you your schedule. Cool, right?
  • Smart Home Integration: Connect your smart mirror to your smart home devices to control lights, temperature, etc. I know how cool it would be to see the temperature in your bedroom or your kitchen from your bathroom mirror.
  • Customizable Widgets: Design your own widgets to display the information you need most, such as weather, news, or social media updates.
  • Security Camera Integration: I'm not going to lie, this is an additional step that would need professional help. For my own smart mirror, this one was too advanced for me. This is beyond my skillset for now.

The sky's the limit; use your imagination and make it your own!

Smart mirror with extra features

Smart mirror with extra features | Image: Supplied

Final Thoughts: My Smart Mirror Journey

Building my smart mirror was a challenging but incredibly rewarding experience. It taught me a lot about electronics, coding, and myself. It showed me that even seemingly complex projects are achievable with enough patience, perseverance, and—let's be honest—a few helpful YouTube tutorials. Now, getting ready in the morning is a whole lot smoother and more efficient. I still sometimes forget appointments, but now at least I have a gorgeous smart mirror to remind me!

Finished smart mirror

Finished smart mirror | Image: Supplied

The only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. — Steve Jobs

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