What is P.I.D.?

[AdamHeard]

Originally Posted by GeeTwo

An encoder is not really the best solution if you're trying to attain a specific, precise, position. Encoders tell you how fast you're moving, and if they're quadrature or gray code, in which direction. However, they don't provide any useful feedback as you approach speed zero, which is where you need them to work if you're shooting for a position. A potentiometer is probably a better solution for this.

We use encoders on all our arms and elevators due to the huge increase in resolution they allow. You don't lose position at zero or low velocity at all. Unsure where you heard that.