We wish to measue the time interval between products passing along a conveyor. We have a sensor that goes low when the product is present (about 0.1s) and which will go high once the product has passed until the next product arrives (varies between 0.15s and 0.8s). Once the reading is made, we wish to store the result in a file (maybe Excel) so that we can analyse it later. We wish to record about 10 minutes of data at a time (less than 1000 readings). The resolution on the time interval we need is about one hundreth of a second (0.01s).
Ideally we would like a board that plugs into the usb on the laptop.
What Pico board should be use? What software will we require?