DIY physical security hacking can be challenging, yet also a joy to experience. This chapter will employ an approach of progressive enhancement to the development of a working security prototype that uses the following hardware:
10k Ohm resistor
HC-SR04 ultrasonic sensor
951WG magnetic contact switch
This chapter will be devoid of what you might consider an actual robot. The interesting aspect of implementing physical security systems is that although they may lack innate wow factor or a feeling of futurism, your creations can easily become a natural part of your daily routine.
One example would involve replacing the button ...