I have crafted a system that works like a piano with only basic electrical components and an ardunio UNO. All the materials i've used are as follows; 5 Lasers(5volts), 5 LDRs, 5 10kOHM resistors, 2 Breadboards (for simpler wire connecting), an Ardunio UNO board, 9 Volt Battery, Jumper wires and some Tack to align the lasers right.
This was my assignment for my final grading in my Electrical and Electronical Engineering class, which thankfully didnt breakdown last minute...
But all that aside, it was a fun and teaching experience to learn and put together all these components, figure out how to write code with my limited knowledge from the beginning, but after all was done i totaly learned a...