I’m a novice and looking for advice on which components to buy for my Pico W. I want to…
- measure the angle of an arm that moves freely. It only needs to travel 90deg and will be resting against something that will get smaller over time (a roll of fabric).
- measure distance through a rolling wheel.
What I plan to make is a device that can accurately estimate the length of fabric remaining on a core and I want to try doing it in two ways: (1) circumference of the roll (through the angle sensor) and (2) the distance traveled of a wheel as it is turned against the fabric roll.
What would these things be called and can you suggest some part numbers?