diff --git a/.gitignore b/.gitignore
index 99ac520..fd7c7e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 README
 build
 dist
-*.egg-info
\ No newline at end of file
+*.egg-info
+log_*
\ No newline at end of file
diff --git a/meshtastic/__init__.py b/meshtastic/__init__.py
index b128103..38ecb84 100644
--- a/meshtastic/__init__.py
+++ b/meshtastic/__init__.py
@@ -47,13 +47,14 @@ interface = meshtastic.StreamInterface() # By default will try to find a meshtas
 
 import google.protobuf.json_format
 import serial
-import serial.tools.list_ports
 import threading
 import logging
 import sys
 import traceback
 from . import mesh_pb2
+from . import util
 from pubsub import pub
+from dotmap import DotMap
 
 START1 = 0x94
 START2 = 0xc3
@@ -68,12 +69,19 @@ MY_CONFIG_ID = 42
 
 class MeshInterface:
     """Interface class for meshtastic devices
+
+    Properties:
+
+    isConnected
+    nodes
+    debugOut
     """
 
     def __init__(self, debugOut=None):
         """Constructor"""
         self.debugOut = debugOut
         self.nodes = None  # FIXME
+        self.isConnected = False
         self._startConfig()
 
     def sendText(self, text, destinationId=BROADCAST_ADDR):
@@ -106,8 +114,15 @@ class MeshInterface:
 
     def _disconnected(self):
         """Called by subclasses to tell clients this interface has disconnected"""
+        self.isConnected = False
         pub.sendMessage("meshtastic.connection.lost")
 
+    def _connected(self):
+        """Called by this class to tell clients we are now fully connected to a node
+        """
+        self.isConnected = True
+        pub.sendMessage("meshtastic.connection.established")
+
     def _startConfig(self):
         """Start device packets flowing"""
         self.myInfo = None
@@ -142,7 +157,7 @@ class MeshInterface:
             self.nodes[node.user.id] = node
         elif fromRadio.config_complete_id == MY_CONFIG_ID:
             # we ignore the config_complete_id, it is unneeded for our stream API fromRadio.config_complete_id
-            pub.sendMessage("meshtastic.connection.established")
+            self._connected()
         elif fromRadio.HasField("packet"):
             self._handlePacketFromRadio(fromRadio.packet)
         elif fromRadio.rebooted:
@@ -160,15 +175,16 @@ class MeshInterface:
         - meshtastic.receive.data(packet = MeshPacket dictionary)
         """
         # FIXME, update node DB as needed
-        json = google.protobuf.json_format.MessageToDict(meshPacket)
+        # We provide our objects as DotMaps - which work with . notation or as dictionaries
+        asObj = DotMap(google.protobuf.json_format.MessageToDict(meshPacket))
         if meshPacket.payload.HasField("position"):
-            pub.sendMessage("meshtastic.receive.position", packet=json)
+            pub.sendMessage("meshtastic.receive.position", packet=asObj)
         if meshPacket.payload.HasField("user"):
             pub.sendMessage("meshtastic.receive.user",
-                            packet=json)
+                            packet=asObj)
         if meshPacket.payload.HasField("data"):
             pub.sendMessage("meshtastic.receive.data",
-                            packet=json)
+                            packet=asObj)
 
 
 class StreamInterface(MeshInterface):
@@ -188,15 +204,14 @@ class StreamInterface(MeshInterface):
         """
 
         if devPath is None:
-            ports = list(filter(lambda port: port.vid != None,
-                                serial.tools.list_ports.comports()))
+            ports = util.findPorts()
             if len(ports) == 0:
                 raise Exception("No Meshtastic devices detected")
             elif len(ports) > 1:
                 raise Exception(
                     f"Multiple ports detected, you must specify a device, such as {ports[0].device}")
             else:
-                devPath = ports[0].device
+                devPath = ports[0]
 
         logging.debug(f"Connecting to {devPath}")
         self._rxBuf = bytes()  # empty
diff --git a/meshtastic/__main__.py b/meshtastic/__main__.py
index 5f4076d..359aaf9 100644
--- a/meshtastic/__main__.py
+++ b/meshtastic/__main__.py
@@ -1,7 +1,7 @@
 #!python3
 
 import argparse
-from . import StreamInterface
+from . import StreamInterface, test
 import logging
 import sys
 from pubsub import pub
@@ -47,20 +47,26 @@ def main():
     parser.add_argument("--debug", help="Show API library debug log messages",
                         action="store_true")
 
+    parser.add_argument("--test", help="Run stress test against all connected Meshtastic devices",
+                        action="store_true")
+
     args = parser.parse_args()
     logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO)
 
-    if args.seriallog == "stdout":
-        logfile = sys.stdout
-    elif args.seriallog == "none":
-        logging.debug("Not logging serial output")
-        logfile = None
+    if args.test:
+        test.testAll()
     else:
-        logging.info(f"Logging serial output to {args.seriallog}")
-        logfile = open(args.seriallog, 'w+', buffering=1)  # line buffering
+        if args.seriallog == "stdout":
+            logfile = sys.stdout
+        elif args.seriallog == "none":
+            logging.debug("Not logging serial output")
+            logfile = None
+        else:
+            logging.info(f"Logging serial output to {args.seriallog}")
+            logfile = open(args.seriallog, 'w+', buffering=1)  # line buffering
 
-    subscribe()
-    client = StreamInterface(args.device, debugOut=logfile)
+        subscribe()
+        client = StreamInterface(args.device, debugOut=logfile)
 
 
 if __name__ == "__main__":
diff --git a/meshtastic/test.py b/meshtastic/test.py
new file mode 100644
index 0000000..9ac4a5c
--- /dev/null
+++ b/meshtastic/test.py
@@ -0,0 +1,104 @@
+import logging
+from . import util
+from . import StreamInterface
+from pubsub import pub
+import time
+
+"""The interfaces we are using for our tests"""
+interfaces = None
+
+"""A list of all packets we received while the current test was running"""
+receivedPackets = None
+
+testsRunning = False
+
+testNumber = 0
+
+
+def onReceive(packet):
+    """Callback invoked when a packet arrives"""
+    print(f"Received: {packet}")
+    if packet.payload.data.typ == "CLEAR_TEXT":
+        # We only care a about clear text packets
+        receivedPackets.extend(packet)
+
+
+def onNode(node):
+    """Callback invoked when the node DB changes"""
+    print(f"Node changed: {node}")
+
+
+def subscribe():
+    """Subscribe to the topics the user probably wants to see, prints output to stdout"""
+
+    pub.subscribe(onNode, "meshtastic.node")
+
+
+def testSend(fromInterface, toInterface):
+    """
+    Sends one test packet between two nodes and then returns success or failure
+
+    Arguments:
+        fromInterface {[type]} -- [description]
+        toInterface {[type]} -- [description]
+
+    Returns:
+        boolean -- True for success
+    """
+    global receivedPackets
+    receivedPackets = []
+    fromNode = fromInterface.myInfo.my_node_num
+    toNode = toInterface.myInfo.my_node_num
+    logging.info(f"Sending test packet from {fromNode} to {toNode}")
+    fromInterface.sendText(f"Test {testNumber}", toNode)
+    time.sleep(10)
+    if (len(receivedPackets) < 1):
+        logging.error("Test failed, expected packet not received")
+        return True
+    else:
+        logging.info("Test succeeded")
+        return False
+
+
+def startTests():
+    logging.info("Found devices, starting tests...")
+    while True:
+        global testNumber
+        testNumber = testNumber + 1
+        testSend(interfaces[0], interfaces[1])
+        time.sleep(20)
+
+
+def onConnection(topic=pub.AUTO_TOPIC):
+    """Callback invoked when we connect/disconnect from a radio"""
+    print(f"Connection changed: {topic.getName()}")
+
+    global testsRunning
+    if (all(iface.isConnected for iface in interfaces) and not testsRunning):
+        testsRunning = True
+        startTests()
+
+
+def openDebugLog(portName):
+    debugname = "log" + portName.replace("/", "_")
+    logging.info(f"Writing serial debugging to {debugname}")
+    return open(debugname, 'w+', buffering=1)
+
+
+def testAll():
+    """
+    Run a series of tests using devices we can find.
+
+    Raises:
+        Exception: If not enough devices are found
+    """
+    ports = util.findPorts()
+    if (len(ports) != 2):
+        raise Exception("Must have at least two devices connected to USB")
+
+    pub.subscribe(onConnection, "meshtastic.connection")
+    pub.subscribe(onReceive, "meshtastic.receive")
+    global interfaces
+    interfaces = list(map(lambda port: StreamInterface(
+        port, debugOut=openDebugLog(port)), ports))
+    logging.info("Ports opened, waiting for device to complete connection")
diff --git a/meshtastic/util.py b/meshtastic/util.py
new file mode 100644
index 0000000..967f289
--- /dev/null
+++ b/meshtastic/util.py
@@ -0,0 +1,16 @@
+
+import serial
+import serial.tools.list_ports
+
+
+def findPorts():
+    """Find all ports that might have meshtastic devices
+
+    Returns:
+        list -- a list of device paths
+    """
+    l = list(map(lambda port: port.device,
+                 filter(lambda port: port.vid != None,
+                        serial.tools.list_ports.comports())))
+    l.sort()
+    return l
diff --git a/setup.py b/setup.py
index 80c9a7f..bd4d469 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,8 @@ setup(
     ],
     packages=["meshtastic"],
     include_package_data=True,
-    install_requires=["pyserial>=3.4", "protobuf>=3.6.1", "pypubsub>=4.0.3"],
+    install_requires=["pyserial>=3.4", "protobuf>=3.6.1",
+                      "pypubsub>=4.0.3", "dotmap>=1.3.14"],
     python_requires='>=3',
     entry_points={
         "console_scripts": [