The project simulates a laser communication device by utilizing a simple laser to represent the transmitter side. This motion system is two stepper motors placed perpendicular to themselves allowing for a quick prototype to be made for steering the beam.
The next step was to develop a method of steering the beam and different scanning patterns. This included a horizontal scan, spiral scan and a parabola scan.
The receiver side utilized a simple photodiode as the feedback mechanism. This was first tested via a wired connection as the fritzing diagram shows and then later achieved via a LoRa module (RF) by syncing times.
The video below shows the use of a horizontal scan pattern with a photodiode to be able to acquire a target. The wired connection sends an interrupt from one particle argon to the other particle argon and records the position of the stepper motors when the photodiode was at its peak reading.
In the wireless system, A LoRa module was utilized to send back a recorded time when the laser had hit the target.
This system is the start to an acquisition system but now requires further development in being able to be keep tracked on the target. This project was part of IOT Deep Dive Bootcamp (CNM Ingenuity) and work for a private company in Free Space optical Links. This work is to serve as a prototype purposes for code and in reality be implemented with finer laser control and a laser that could transmit a much faster rate of data.
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