I've got an m1000 tape dispenser which is already an automated tape dispenser for industrial usage. The problem is that I can't get enough grip between my shaft en and tape to get the precise length I've asked of the device. So, I want to modify it using a sensor which can measure the length of the tape that rolled out to get the right length of tape I need. And reprogram the tape dispenser and equip it with an arduino so it would interact exactly how I want him to interact.
My question is what kind of sensor do I need? Would a photodiode or phototransistor work?
Can someone help me out with this please?
The arduino will control the stepper motor etc. So the whole pcb will be replaced