Affordable Bimodal Optical Sensors to Spread the Use of Automated Insect Monitoring

Figure 28

Acceleration sensor. The circuit that detects vibration shocks is based on the MMA7361L of NXP. The IC2 and IC3 are analogue comparators with a reference voltage of 1.25 V and take as input the analogue outputs Χ and Y of the acceleration sensor. In the output, they give an amplitude voltage of 3.3 V so that it is recognizable by a simple I/O pin of the MCU.