KEYPAD LOCKBOX WITH HIDDEN DRAWER, using passive components!!

More than three years ago, I decided to build a lock box, with the self challenge to do it with only passive components(relay, diodes, resistor, and capacitor). The challenge also included,the circuit to accept repeatable digits, be programmable, and reset with the wrong choice in digit selection. All this to be build in a beautiful box, and display my circuit inside. So sit back and enjoy how I did this.
#puzzlebox
#woodbox
#keypad

[@MarkMcCluney]

I've never heard of a lock box before. Most interesting.

[@PeterWaldraff]

Thanks!

[@joew389]

Peter,
Another one of your impressive projects showing a great combination of woodworking, engineering, and electronics. Very nice. I also enjoyed your model train and power tool cart videos. It was very interesting to see how your tool cart evolved over time… a continuous improvement process. Happy Thanksgiving!

[@PeterWaldraff]

Thank you!! Appreciate the feedback.
Happy Thanksgiving!