As can be seen in the circuit diagram, it is wired around one tiny microcontroller ... and better for the environment. The vibration sensor module is monitored by GP5 (pin 2) of PIC12F675. During the ...

The watchdog circuit uses small, low-cost 2-axis G sensors and a 6-pin, SOT-23 microcontroller to monitor the vibration and shock sustained by the unit. By proper design of the signal conditioning ...