Hi, Im trying to find a suitable sensor to count bottles as they pass on a conveyor. I want to connect it to an RPi, with PiFace. Any help would be appreciated.
Hi, Im trying to find a suitable sensor to count bottles as they pass on a conveyor. I want to connect it to an RPi, with PiFace. Any help would be appreciated.
What kind of bottles?
Metal or plastic tops?
They would be plastic (HDPE) bottles and also plastic caps.
If the bottles are neatly inline you could possibly detect them using a module like this above the caps:
https://www.bananarobotics.com/shop/Pololu-38-kHz-IR-Infrared-Proximity-Sensor-with-30cm-Range
Another approach could be beam-break with modules such as these:
https://www.adafruit.com/products/2167
Though I'm not sure how transparency of the bottles might affect these. Worth a try though 
Thanks Paul, that looks like it should do what I want! I'm guessing that it is compatible with the Raspberry Pi
Yes. They should be compatible with the PiFace.
Yes. They should be compatible with the PiFace.