wouldn't keeping the pin up draw power from it?
No, not without a load on it. To let current flow you have to have two different potentials (voltages). If you connect two points, both on 5V, no current will flow although both are HIGH.
wouldn't keeping the pin up draw power from it?
No, not without a load on it. To let current flow you have to have two different potentials (voltages). If you connect two points, both on 5V, no current will flow although both are HIGH.