Project Hub /Renewable Energy Power & Sustainability/Wireless Power Transfer/DIY: Wireless Power Case For Raspberry Pi

Intermediate

RASPBERRY PI

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

DIY: Wireless Power Case For Raspberry Pi

Learn how to design and 3D print a custom wireless power case for the Raspberry Pi, enabling cable-free operation via inductive charging and a MagSafe-style magnetic alignment system.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Raspberry Pi 3 - Model B+ 1.4Ghz 64-bit quad-core Processor with 1 GB Ram (Original) Rs. 9,810.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Magnets / Electrodes / Probes
3D Printed Parts / Filament / Printer
Voltage Regulator IC (7805 / LM317 / 1117)

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How It Works

The DIY Wireless Power Case for Raspberry Pi operates on the principle of electromagnetic induction to deliver cable-free power to a Raspberry Pi 5. The system relies on a pair of inductive coupling coils: an external transmitter tile and a receiving copper wire loop integrated into the custom 3D-printed PLA plastic enclosure. When alternating current flows through the transmitting coil, it generates an oscillating magnetic field that induces an alternating voltage in the receiving wire loop via mutual inductance. Because this induced AC voltage must be converted into a stable DC supply suitable for the single-board computer, the output of the receiving coil is routed through a 5V 2A voltage regulator (such as an LM7905-style or equivalent linear/switching 5V regulator) to condition and step the voltage down to a steady 5-volt rail. Connecting wires bridge the regulated output directly to the Raspberry Pi's power input pins. To ensure optimal energy transfer efficiency and physical stability, integrated MagSafe magnets embedded within the PLA housing provide a self-aligning mechanism that snaps the case securely into position over the wireless charging pad every time.

Why Build This

Deploy sleek, cable-free IoT nodes and smart home wall displays that can be easily mounted and detached from charging surfaces.

Apply inductive power transfer and voltage regulation principles to custom hardware enclosures for undergraduate engineering prototyping.

Eliminate physical USB-C wear and tear on Raspberry Pi 5 power ports in permanent or semi-permanent station deployments.

Real-World Application

Deploying cable-free IoT devices and smart displays on walls or surfaces powered by wireless charging tiles.

Skills You'll Learn

Inductive power transfer design

voltage regulation and power conditioning

3D printing and CAD enclosure integration

electronic component soldering and wiring

Safety Precautions

Ensure correct polarity when connecting the voltage regulator output to the Raspberry Pi power pins to prevent damage.

Technology Tags

WIRELESS POWER

MAGSAFE

3D PRINTING

PLA

VOLTAGE REGULATOR

LM7905

IOT

Frequently Asked Questions

Can I use any voltage regulator for this project?

No, you must use a regulator specifically rated to output a steady 5V (such as a 5V 2A regulator) to match the requirements of the Raspberry Pi 5 and prevent electrical damage.

Does this wireless setup allow for data transfer or only power?

This project is strictly designed for wireless power delivery via inductive charging; it does not support wireless data communication through the coil.

Why is PLA plastic used for the 3D-printed case?

PLA filament is easy to 3D print and provides a rigid, non-conductive housing to securely hold the copper wire loop, MagSafe magnets, and Raspberry Pi in place.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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