Hi, I just put together the ray gun; everything seems to be working except for the hall effect sensor (or the resistor). All the RGB lights up in their true colors, along with the fuse tube, and the potentiometer works as well. When the gun is powered up, the sounds indicate that the barrel is open and thus does not shoot when the trigger is pulled. However, the magnet does not communicate with the sensor, and therefore, the gun will not fire or reload. I then wanted to see if the problem lay with the wires' orientation, so I switched the white and red wires on the resistor. Interestingly enough, this did not fix the problem; however, it did allow for me to shoot the gun and listen to Dempsey complain about ammunition. I have to turn off-on the gun (reset) if I want to reshoot a full mag.
The gun's current sensor is the Youliang Linear Hall Switch Element 49E Speed Regulating Induction Element High Sensitivity sensor and the EDGELEC 10K ohm Resist 1/2w (0.5Watt) ±1% Tolerance Metal Film Fixed Resistor. These are not precisely what you used, but I didn't expect that to make a difference. However, I looked over your documents and ordered an Adafruit Accessories Hall Effect Sensor US5881LUA (which you used) and an E-Projects 100EP51210K0 10k Ohm Resistors, 1/2 W, 5%. I am not sure if that is the same resistor you used as you did not provide which one specifically in the documents; I just went by how it looked in the video. When they arrive this Sunday, I will update if that fixes the issue.
I hope this was not too much to read and enough information to picture where I am with this project. Let me know what you think. Thank you for the STL files and the excellent model and blueprints! I think it looks like the World at War/Black Ops 1 ray gun, which is why I wanted to make one myself. Hopefully, we can resolve the issue, and I'll share my ray gun and my experiences building it with the forum. Thank you again, and I look forward to your reply!