0

Full Build Design for RFID E-Lock, uses PN532 Controller, Vehicle Battery, Teensy 3.2

Proclaiming “secure locks are always better than alarm systems or cameras,” Adafruit forums user Elmue set about to design and build an electronic door lock – and the results are amazing! With thorough build notes, source code, and datasheets provided, you can feel confident tackling this project whether you require the added security or want to issue ‘keys’ quickly in-house. The most interesting aspects of the build to me are the battery, designed to operate for ~4 days in the case of a power failure, and also the tips on calculating Rx for a door lock solenoid.

Mainboard

Circuit

ReadCard

Thanks again to Elmue for sending this in; view the entire project here on Code Project.


Featured Adafruit Products!

NewImage

PN532 NFC/RFID controller breakout board – v1.6: The PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and ‘act’ like a NFC tag. If you want to do any sort of embedded NFC work, this is the chip you’ll want to use! Read more.


Join 4,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Learn “How Computers Work” with Bill Gates, Ladyada and more – From Code.org !

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — The Public Radio’s inventory dashboard

Wearables — Glue for the occasion

Electronics — Ew! Sticky!

Biohacking — Using Insulin Load for Better Sleep and Recovery

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.