I am new to Arduinos and decided to take on a complicated project using Arduinos and Sensors, at least for me it seems complicated. I have been researching for the past week and seems like there is an abundant amount of sensors and setups that can be used. I am looking for something simple and robust. The project is to hookup 6 sensors about 1 foot apart that will need to sense when a ball passes by. I would like to send the data back to a single Arduino Yun which would than post the data to AWS IoT.
I have been looking into PIR sensors, but not sure these can detect a metallic ball. I looked at UltraSonic sensors, but these may be to sensitive and overkill for what I am trying to do. I also learned about Photogates which sounds like these may be the right sensor for the job.
I am struggling to choose the right sensor and also the right method to send it wirelessly back to a Yun. I was thinking Receiver/Transmitter using Xbees but than I also was looking into Mesh Networks.
Any guidance would be extremely helpful. Not necessarily looking for the cheapest option but more so the simpliest option.