diff --git a/CONFIGURATION.md b/CONFIGURATION.md
index a890ff2..86d738a 100644
--- a/CONFIGURATION.md
+++ b/CONFIGURATION.md
@@ -1,12 +1,13 @@
 #Environment Variables
 ##Required global variables
-* GW_TYPE required
 * GW_ID required
 * GW_KEY required
 * GW_CONTACT_EMAIL required - default an empty string
   The gateway owner's contact information.
 
 ##Optional global variables
+* GW_RESET_PIN - default 22
+  The physical pin number on the Raspberry Pi to which the concentrator's reset is connected. If you followed the [TTN-ZH instruction](https://github.com/ttn-zh/ic880a-gateway/wiki), or used [Gonzalo Casas' backplane board](https://www.tindie.com/stores/gnz/), this is most likely pin number 22. As pin 22 is the default value, you do not need to define it in this case.
 * GW_GPS optional - default False
   * If True, use the hardware GPS. 
   * If False, 
diff --git a/run.py b/run.py
index 33eca97..33e72d8 100755
--- a/run.py
+++ b/run.py
@@ -252,11 +252,27 @@ with open('local_conf.json', 'w') as the_file:
 
 # Endless loop to reset and restart packet forwarder
 while True:
-  # Reset the gateway board
-  GPIO.setmode(GPIO.BCM) # hardware pin numbers, just like gpio -1
+  # Reset the gateway board - this only works for the Raspberry Pi.
+  GPIO.setmode(GPIO.BOARD) # hardware pin numbers, just like gpio -1
 
-  if (os.environ.get("GW_TYPE")=="imst-ic880a-spi"):
-    print ("[TTN Gateway]: Toggling reset pin on IMST iC880A-SPI Board")
+  if (os.environ.get("GW_RESET_PIN")!=""):
+    try:
+      pin_number = int(os.environ.get("GW_RESET_PIN"))
+      print ("[TTN Gateway]: Resetting concentrator on pin "+os.environ.get("GW_RESET"))
+      GPIO.setup(pin_number, GPIO.OUT, initial=GPIO.LOW)
+      GPIO.output(pin_number, 0)
+      time.sleep(0.1)
+      GPIO.output(pin_number, 1)
+      time.sleep(0.1)
+      GPIO.output(pin_number, 0)
+      time.sleep(0.1)
+      GPIO.input(pin_number)
+      GPIO.cleanup(pin_number)
+    except ValueError:
+      print ("Can't interpret "+os.environ.get("GW_RESET_PIN")+" as a valid pin number.")
+
+  else:
+    print ("[TTN Gateway]: Resetting concentrator on default pin 22.")
     GPIO.setup(22, GPIO.OUT, initial=GPIO.LOW)
     GPIO.output(22, 0)
     time.sleep(0.1)
@@ -264,11 +280,9 @@ while True:
     time.sleep(0.1)
     GPIO.output(22, 0)
     time.sleep(0.1)
+    GPIO.input(22)
     GPIO.cleanup(22)
 
-  #TODO: reset other gateway boards
-
-
   # Start forwarder
   subprocess.call(["./mp_pkt_fwd"])
   time.sleep(15)