Linear Actuator w/ Proximity Sensor and Counter

Projects General Guidance
1

Hello,

I have a project where I want to use a linear actuator with a hook to pull a rod rearward, this rod is spring loaded and after a certain distance, the hook is to release the rod and let it spring forward. The linear actuator would then push forward and hook the rod again and repeat. I want to be able to set the cycle count as well as display what the current count is at. I believe I can use some kind of proximity sensor and a trigger mechanism to keep count as well as trigger the hook. I took an electromechanical class a few years ago where we used Arduino to program a robot to navigate a maze so I can somewhat familiar with using arduino. Does anyone have any suggestions on how to move forward with this project?

2

Start by building the mechanics. That's the most difficult part. Programming an Arduino for a motor control and some switches is the easy part.

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And when your mechanics is done, measure the various forces needed for make your project function. Then you will know the mechanical power needed.
Paul

1 Like
4

Sounds like a pinball machine actuator.

You might consider a magnetic coil instead of a hook. It can be turned on and off by the Arduino.

Perhaps the magnetic coil could be attached to the top of a cog belt, with a stepper moving the belt.

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