The next project is Laser Protection. For now, I am sharing some basic information about it, as I am only just starting to work on it, but I would like to briefly describe the idea here.
This will be a very simple project, however I want to include it here because it was my very first project idea when I started my journey with electronics. Unfortunately, due to various factors, I never actually began working on it. Now that I have gained some experience in electronics, I decided that it is time to satisfy my younger self from the past and finally bring this project to life.
This simple project will be divided into two parts:
Part One – Receiver
The receiver will be responsible for detecting interruptions of the laser beam and will allow adjustment of the sensitivity to the received light. Additionally, an anti-sabotage system will be implemented using a second phototransistor and an IR diode. When the beam is interrupted, the user will receive a notification on their phone, and a buzzer will also be activated.
The project will be mainly electronics-focused, therefore LED indicators showing the presence of the 9 V power supply will be implemented using comparators. I am aware that this is not strictly necessary, since the circuit will operate at 5 V and be powered by a 9 V battery, but I am doing this primarily for educational purposes. In the past, I really wanted to implement this functionality using comparators, so this project gives me the opportunity to learn and experiment.
Part Two – Transmitter
The second part of the project will be even simpler. It will consist of a transmitter that emits a laser beam. The user will be able to adjust the laser power, and using an IR receiver together with an NE555 timer IC, the system will be able to be turned on using a remote control.
As mentioned earlier, this project will be quite simple, but because it was intended to be my first project, I feel a strong sentimental connection to it. I would like to finally complete it and leave it here so that you can follow my future, and hopefully even more interesting, ideas.
Right after finishing this project, I plan to move on to a much more complex one, so keep your fingers crossed that I can complete this project as quickly as possible 😉