March 4, 2024

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RFID Sticker On Bike Helmet Grants Garage Access

2 min read
RFID Sticker On Bike Helmet Grants Garage Access

[Glen] may describe his undertaking of opening his garage doorway by way of an RFID sticker on his bike helmet as easy, but some of the interfacing he required to do was pretty complicated. He walks as a result of the job from beginning to finish, and there’s a great deal to study from.

When creating an RFID entry control technique, 1 has to make a decision what type of reader and what type of tags one particular needs to use. They all operate extra or much less the very same way, but there are a large amount of useful issues to get into account these as cost, array, ease of use, and security alternatives. Just after a good deal of investigation, [Glen] determined on reasonably priced sticker-design and style tags and a suitable reader supporting credentials with an ISO14443 UID that could be suitably mounted on a building’s exterior.

The precise opening of the doorway was the straightforward part, done by interfacing to a spare distant.

Breakout boards with all set-to-use code libraries exist for some RFID readers, but that wasn’t the case for the reader [Glen] had. He ended up rolling his very own code to take care of conversation with the reader, with a Microchip PIC18F45K50 undertaking all the get the job done of looking at tags and executing entry control. His code is on the project’s GitHub repository, and if you also uncover yourself needing to interface to a reader that works by using the Wiegand protocol, you may possibly want to give it a glance.

Controlling the precise garage doorway was the uncomplicated portion. All that took was soldering two wires throughout the switch contacts of a spare garage door opener distant, and utilizing a relay to near the contacts. Simple and successful. You can see it in motion in the limited movie, embedded beneath the break.

Overhead door entry command may be a basic thought, but it will come in all styles and measurements when enterprising hackers start searching for remedies. We have seen garage doors given the Do-it-yourself IoT treatment method, and even viewed accessibility controlled by a car’s headlamp flashes, which in fact turned out to be extra secure than it seems.