Help With PID control

hello! i am currently new in the vex competitions. This year i have made a well built scissor lift that moves together to get cone stacked on top of mobile goals. Right now i can stack 11 cone onto a mobile goal. I am looking to improve my scissor lift by using PID control. So i come here to ask the community if i can get some help with programming a PID control on a lift. Could anyone help me tell me how to program PID control on a scissor lift? i want the pid control t help m when i drive the scissor lift. i currently have IEMS on both sides of the lift.

Go here: http://georgegillard.com/documents
Then click download on the “Introduction to PID controllers” document. It’s really useful

Depending on how precise you need to be, you might be able to get away with only a Proportional-loop. (That is, leave out the I and D components).

We’ve been using them this season with no issue–and at least I’ve found they are dramatically easier to tune…