Adding relay output test program.

pb/pb.py

@@ -18,7 +18,7 @@ if __name__ == "__main__":
     i = 0
     try:
         while True:
-            if not GPIO.input(PB_PIN):
+            if GPIO.input(PB_PIN):
                 i += 1
                 print(f"Hi Gabby! Did you push the button? i = {i}")
             time.sleep(0.1)

relay/relay.py

@@ -0,0 +1,30 @@
+#! env/bin/python3
+
+import RPi.GPIO as GPIO
+import time
+
+if __name__ == "__main__":
+
+    # Setup for Hardware
+    RELAY1_PIN = 26 
+    RELAY2_PIN = 20
+    RELAY3_PIN = 21
+
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setwarnings(False)
+
+    # Setup the output pin; initialize OFF.
+    GPIO.setup(RELAY1_PIN, GPIO.OUT)
+    GPIO.output(RELAY1_PIN, False)
+
+    # Short toggle.
+    i = 0
+    try:
+        time.sleep(1.0)
+        GPIO.output(RELAY1_PIN, True)
+        time.sleep(2.0)
+        GPIO.output(RELAY1_PIN, False)
+        time.sleep(1.0)
+        
+    finally:
+        GPIO.cleanup()