Laser Board Receiver Design & Build

I’m working with a Diode Laser Board and I need a custom receiver that can plug into that setup, track the machine’s positioning in real time, and instantly flag any faults it detects. The idea is to have... (Budget: $30 - $250 USD, Jobs: Arduino, Electronics, Embedded Systems, Firmware Development, Microcontroller, PCB Layout, Signal Processing, STM32)