RFID Door Lock Project


Worcester Polytechnic Institute

2014

01

Background

This is a 3D Printed RFID Door Lock Entry using an Arduino Microcontroller, Encoder Motor, and Motor Drivers.

02

Photos

Printing 1 Layer to confirm hole alignment to save plastic - a perfect fit.

Printing 1 Layer to confirm hole alignment to save plastic - a perfect fit.

AutoCAD Drawing of how mechanical components were going to be linked.

AutoCAD Drawing of how mechanical components were going to be linked.

Adding Metal Hardware - Linkages are working properly.

Adding Metal Hardware - Linkages are working properly.

Engineering Drawings annotating lock position and motor rotation / underlying concepts.

Engineering Drawings annotating lock position and motor rotation / underlying concepts.

Lots of 3D Modelling and Dimensioning. There is redundancy because AutoCAD Does not like Unions / Subtractions after they've been merged.

Lots of 3D Modelling and Dimensioning. There is redundancy because AutoCAD Does not like Unions / Subtractions after they've been merged.

Countersunk screws to be flush with the back plate for clean and professional installation.

Countersunk screws to be flush with the back plate for clean and professional installation.

All screws are in place - and all of them are sitting flush to the backplate - Perfect.

All screws are in place - and all of them are sitting flush to the backplate - Perfect.

Testing Backplate Orientation and fit along with possible mounting ideas for Breadboard / PCB.

Testing Backplate Orientation and fit along with possible mounting ideas for Breadboard / PCB.

Additional Prototyping on the Arduino Micro.

Additional Prototyping on the Arduino Micro.

Final Design coming together, 9V Battery, Arduino Micro, Motor Driver, on Small Breadboard.

Final Design coming together, 9V Battery, Arduino Micro, Motor Driver, on Small Breadboard.

Final Breadboard alongside Final Backplate - Ready to go!

Final Breadboard alongside Final Backplate - Ready to go!

Had to extend the existing axle to reach the door lock as I've elevated it 3/8" from the Original Position.

Had to extend the existing axle to reach the door lock as I've elevated it 3/8" from the Original Position.

This is the RFID Sensor I used, which works with 125 kHz Cards, Tags, and components. I can issue them to friends to have access to my dorm if I'm at class.

This is the RFID Sensor I used, which works with 125 kHz Cards, Tags, and components. I can issue them to friends to have access to my dorm if I'm at class.