this is my first post on this forum, and I am in need of some help. I'm making a project for work. I need to make a miniature mock-up of a parking gate as part of a demo rig to show customers. I have free reign on this, so I can make it as big or as small as I want. I'm thinking something fairly small, maybe a pedestal 2' tall, and a gate arm that is 1' long.
I am in need of a couple things:
- I need a servo motor that rotate back and forth 90 degrees. From my research, I'm assuming I can use 2 limit switches (one on either end). I've also considered using a motor that travels the same direction, but then using linkage to actuate the arm up and down (think similar to a train wheel linkage). The gate arm needs to travel from horizontal to vertical and back. The material used can be anything, from foam to wood to metal. What kind of motor should I use, and what is the easiest way to get the arm to do what I want? I saw a video on the "I like to Make Stuff" youtube channel where he made an arduino controlled blast gate dust collection for his workshop. (Fully Automated Dust Collection powered by Arduino // How To | I Like To Make Stuff - YouTube). I would like to do something similar, but just use the motor to raise and lower the arm 90 degrees. He says that he uses the arduino to control the amount of rotation. Is this true?
The other thing I need to figure out is how to get the motor to go on command. The controller I'm using is an I/O board, so I fire the input, and the output relay closes to send voltage to the motor to raise/lower the arm. I need to motor to stay "rotated" while the input is fired, then rotate back when the input is off. Essentially supplying power to it when the input is on, but not when it's off. From looking around on Google and other sites, the arduino seems to control that function. I do not want this. If I have to use an arduino, I can and will, but I would prefer not to.
Thanks in advance for your help!