Arduino LED Pattern Simulator
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pattern running...
Arduino Circuit Diagram with Relays
Arduino
Uno
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
5V
GND
Relay
Pin 2
Relay
Pin 3
Relay
Pin 4
Relay
Pin 5
Relay
Pin 6
Relay
Pin 7
Relay
Pin 8
Relay
Pin 9
LED 1
LED 2
LED 3
LED 4
LED 5
LED 6
LED 7
LED 8
Wiring Legend:
Signal (Arduino to Relay coil)
+12V Power Supply
Relay Contact to LED+
Ground (LED- and Arduino GND)
12V
Power Supply
+
-