Smart mirrors are no longer sci-fi—they’re DIY-friendly, functional, and fantastic for modern homes. But many makers overlook one critical part: the low-voltage power supply. Without the right setup, your display, lights, and sensors can flicker, overheat, or simply not start. Here’s how to power your smart mirror efficiently and safely. 

🔍 The Problem: Poor Voltage Regulation & Power Mismatch

Most smart mirrors run on 5V or 12V for the LED strips, microcontrollers, and displays. Using a mismatched or cheap adapter can cause voltage drops, especially under load. This can reset your Raspberry Pi, dim your LEDs, or even damage sensitive components.

✅ The Solution: Use a Regulated SMPS with Safety Margins

Choose a regulated SMPS (Switch Mode Power Supply) with 20–30% higher current rating than your total load. Also, use DC barrel jacks or terminal blocks for safe and clean connections. Avoid using USB power banks for permanent installations.

🔧 Practical Example

Say your mirror has a 12V LED strip (1.2A) and a Raspberry Pi (5V 2.5A via buck converter).

Total load ≈ 1.2A + (2.5A × 5V/12V) ≈ 2.3A.

Choose a 12V 3A SMPS to avoid heating and voltage sag.

🛍️ Product Suggestions

• 12V SMPS Power Supply

• DC Barrel Jack

• Shop now at SmartXProKits.in
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