diff --git a/README.md b/README.md
index ad5e790..1f19f7c 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # mqtt-remote-gpio
 Control GPIO pins using MQTT on Raspberry Pi and more
+
+## Notice
+This project is in very early development and I have not previously worked with MQTT.
+I also have little experience in Rust, so the code quality will initially be low and improve quite rapidly.
diff --git a/config.schema.json b/config.schema.json
index 4c7a80f..b5b2f4e 100644
--- a/config.schema.json
+++ b/config.schema.json
@@ -63,7 +63,8 @@
                         "type": "string"
                     },
                     "pin": {
-                        "type": "number"
+                        "type": "number",
+                        "description": "The pint that is controlled by this topic"
                     },
                     "mode": {
                         "type": "string",
@@ -71,39 +72,47 @@
                             "in",
                             "out"
                         ],
-                        "description": ""
+                        "description": "The type of the pin. When set to IN, changes to this pin will be published to this topic, setting it to OUT, updates sent to this topic will make the pin change state to the specified state"
+                    }
+                }
+            },
+            "if": {
+                "properties": {
+                    "mode": {
+                        "const": "in"
+                    }
+                }
+            },
+            "then": {
+                "properties": {
+                    "pollInterval": {
+                        "type": "number",
+                        "description": "The time between polls of the value of the GPIO pin, in cycles (as configured in general)",
+                        "minimum": 1,
+                        "maximum": 65535,
+                        "default": 1
                     }
                 },
-                "if": {
-                    "properties": {
-                        "mode": {
-                            "const": "in"
-                        }
-                    }
-                },
-                "then": {
-                    "properties": {
-                        "pollInterval": {
-                            "type": "number",
-                            "description": "The time between polls of the value of the GPIO pin, in milliseconds. Updates are only sent if state changes",
-                            "minimum": 100,
-                            "maximum": 65535
-                        }
-                    },
-                    "required": [
-                        "topic",
-                        "pin",
-                        "mode",
-                        "pollInterval"
-                    ]
-                },
-                "else": {},
                 "required": [
                     "topic",
                     "pin",
-                    "mode"
+                    "mode",
+                    "pollInterval"
                 ]
-            }
+            },
+            "else": {},
+            "required": [
+                "topic",
+                "pin",
+                "mode"
+            ]
+        },
+        "cycleInterval": {
+            "type": "number",
+            "minimum": 50,
+            "maximum": 65535,
+            "default": 100,
+            "description": "How many miliseconds should ellapse between polls of the pin states. Updates are only sent when the state actually changes"
         }
     }
 }