Pneumatics - Realworld Interfacing - Circuits - Robots
E Wired with an LED, potentiometer & switch.
Schematic of an LED,
potentiometer & switch.
The LED and resistor are wired between digital output (+5 volts) and ground. The long lead on the LED must connect to +5 volts.
The potentiometer
has two leads that span a fixed resistance. The fixed resistance must
be wired between +5 volts and ground. The third lead is a moveable tap
that slides across the fixed resistance. The tap must be wired to analog
input. Never wire the tap to either +5 volts or ground.
The switch is wired between the digital input and ground. Polarity makes no difference.
The following color conventions are common. However, they are not always followed. Double check the wiring before connecting the component to the board.
RED
= +5 volts
BLACK = ground (0 volts)
YELLOW = an intermediate voltage for sensors
