diff --git a/oin_ha/__main__.py b/oin_ha/__main__.py
deleted file mode 100644
index 0dff414..0000000
--- a/oin_ha/__main__.py
+++ /dev/null
@@ -1,44 +0,0 @@
-from threading import Timer
-
-import paho.mqtt.client as mqtt
-
-from .display import Display
-from .sensors import Sensors
-
-dt = 10
-mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
-hat_sensors = Sensors(mqttc, "oin", "Oin")
-hat_display = Display(mqttc, "oin", "Oin")
-
-
-@mqttc.connect_callback()
-def on_connect(client, userdata, flags, reason_code, properties):
-    print(f"Connected with result code {reason_code}")
-
-    hat_sensors.publish_discovery()
-    hat_display.publish_discovery()
-
-    hat_sensors.publish_online()
-    hat_display.publish_online()
-
-    timer = Timer(0, send_data)
-    timer.start()
-
-
-@mqttc.message_callback()
-def on_message(*args, **kwargs):
-    hat_display.on_message(*args, **kwargs)
-
-
-mqttc.username_pw_set(username="oin", password="n+Bi58l7LxbH5nEJ")
-mqttc.connect("homeassistant.local", 1883, 60)
-
-
-def send_data():
-    timer = Timer(dt, send_data)
-    timer.start()
-
-    hat_sensors.publish_state()
-
-
-mqttc.loop_forever()
diff --git a/oin_ha/display/__init__.py b/oin_ha/display/__init__.py
deleted file mode 100644
index fa628d3..0000000
--- a/oin_ha/display/__init__.py
+++ /dev/null
@@ -1,282 +0,0 @@
-import json
-from threading import Timer
-
-import bdfparser
-from sense_hat import ACTION_HELD, ACTION_RELEASED, SenseHat
-
-
-class Display:
-    def __init__(self, mqttc, uid, name):
-        self.mqttc = mqttc
-        self.sense = SenseHat()
-        self.uid = uid
-        self.name = name
-
-        self.init_lights()
-        self.mqttc.will_set(self.availability_topic, "offline", retain=True)
-
-    @property
-    def device(self):
-        return {
-            "identifiers": [self.uid],
-            "name": self.name,
-        }
-
-    @property
-    def availability_topic(self):
-        return f"{self.uid}/display/availability"
-
-    def init_lights(self):
-        options = {
-            "device": self.device,
-            "availability_topic": self.availability_topic,
-        }
-
-        self.main_light = Light(
-            "LED", self.uid, "led", self.sense, mqttc=self.mqttc, **options
-        )
-
-    def publish_discovery(self):
-        self.main_light.publish_discovery()
-
-    def publish_online(self):
-        self.subscribe()
-        self.mqttc.publish(self.availability_topic, "online", retain=True)
-
-    def subscribe(self):
-        self.main_light.subscribe()
-
-    def on_message(self, *args, **kwargs):
-        self.main_light.on_message(*args, **kwargs)
-
-
-class Light:
-    _colors = {
-        "Bleu": [0, 0, 255],
-        "Blanc": [255, 255, 255],
-        "Rouge": [255, 0, 0],
-        "Verte": [0, 255, 0],
-        "Jaune": [255, 255, 0],
-    }
-
-    def __init__(self, name, parent_uid, slug, sense, mqttc, n=6, **kwargs):
-        self.name = name
-        self.parent_uid = parent_uid
-        self.slug = slug
-        self.sense = sense
-        self.mqttc = mqttc
-        self.options = kwargs
-
-        self._switch = False
-        self._color = [[255, 255, 255]] * n
-        self._pres = [""] * n
-        self._values = [""] * n
-        self._n = n
-        self._i = 0
-        self._toggled = False
-
-        self.font = bdfparser.Font("src/tom-thumb.bdf")
-        self.timer = Timer(0, self.__init__)
-
-        self.sense.stick.direction_right = self.switch_screen
-        self.sense.stick.direction_left = self.switch_screen_rev
-        self.sense.stick.direction_middle = self.toggle
-
-    def publish_discovery(self):
-        for i in range(self._n):
-            self.mqttc.publish(
-                self.get_discovery_topic(i),
-                json.dumps(
-                    {
-                        "command_topic": self.command_topic(i, "command"),
-                        "effect_command_topic": self.command_topic(i, "effect"),
-                        "effect_list": ["Low Light", "Normal"],
-                        "effect_state_topic": self.state_topic,
-                        "effect_value_template": "{{ value_json.effect }}",
-                        "icon": "mdi:dots-grid",
-                        "name": f"{self.name} {i}",
-                        "on_command_type": "brightness",
-                        "rgb_command_topic": self.command_topic(i, "rgb"),
-                        "rgb_state_topic": self.state_topic,
-                        "rgb_value_template": "{{" + f"value_json.rgb[{i}]" + "}}",
-                        "retain": True,
-                        "unique_id": f"{self.uid}_{i}",
-                        "state_topic": self.state_topic,
-                        "state_value_template": "{{" + f"value_json.state[{i}]" + "}}",
-                    }
-                    | self.options
-                ),
-                retain=True,
-            )
-            self.publish_state()
-
-    def subscribe(self):
-        for i in range(self._n):
-            self.mqttc.subscribe(self.command_topic(i, "command"))
-            self.mqttc.subscribe(self.command_topic(i, "effect"))
-            self.mqttc.subscribe(self.command_topic(i, "rgb"))
-            self.mqttc.subscribe(self.command_topic(i, "value"))
-            self.mqttc.subscribe(self.command_topic(i, "action_color"))
-
-    def on_message(self, client, userdata, message):
-        data = message.payload.decode()
-
-        match message.topic.rsplit("/", maxsplit=2):
-            case [self.base_topic, i, "command"]:
-                self.switch = False
-            case [self.base_topic, i, "rgb"]:
-                self._i = int(i)
-                self.set_color(int(i), list(map(int, data.split(","))))
-            case [self.base_topic, i, "effect"]:
-                self.low_light = data == "Low Light"
-            case [self.base_topic, i, "value"]:
-                self.set_value(int(i), data)
-            case [self.base_topic, i, "action_color"]:
-                self.set_color(int(i), self._colors.get(data, [0, 0, 0]), switch=False)
-            case _:
-                return
-
-    def publish_state(self):
-        self.mqttc.publish(
-            self.state_topic,
-            json.dumps(
-                {
-                    "effect": "Low Light" if self.low_light else "Normal",
-                    "rgb": self.rgb,
-                    "state": [
-                        self.state if i == self._i else "OFF" for i in range(self._n)
-                    ],
-                }
-            ),
-            retain=True,
-        )
-
-    @property
-    def uid(self):
-        return f"{self.parent_uid}_{self.slug}"
-
-    def get_discovery_topic(self, i):
-        return f"homeassistant/light/{self.uid}_{i}/config"
-
-    @property
-    def base_topic(self):
-        return f"{self.parent_uid}/display/{self.slug}"
-
-    def command_topic(self, i, cmd):
-        return f"{self.base_topic}/{i}/{cmd}"
-
-    @property
-    def state_topic(self):
-        return f"{self.parent_uid}/display/{self.slug}/state"
-
-    @property
-    def switch(self):
-        return self._switch
-
-    @switch.setter
-    def switch(self, value):
-        self._switch = value
-        if value:
-            self.update_value()
-        else:
-            self.sense.clear()
-        self.publish_state()
-
-    @property
-    def state(self):
-        return "ON" if self.switch else "OFF"
-
-    @property
-    def color(self):
-        return self._color
-
-    def set_color(self, i, value, switch=True):
-        self._color[i] = value
-        if switch and not self.switch:
-            self.switch = True
-        if switch:
-            self.update_value()
-        elif i == self._i:
-            self.display_value()
-        self.publish_state()
-
-    @property
-    def rgb(self):
-        return [",".join(map(str, self.color[i])) for i in range(self._n)]
-
-    @property
-    def value(self):
-        return f"{self._pres[self._i]} {self._values[self._i]}"
-
-    @property
-    def low_light(self):
-        return self.sense.low_light
-
-    @low_light.setter
-    def low_light(self, value):
-        self.sense.low_light = value
-        self.publish_state()
-
-    def set_value(self, i, value):
-        match value.split():
-            case [val]:
-                self._pres[i] = ""
-                self._values[i] = val
-            case [pre, val, *_]:
-                self._pres[i] = pre
-                self._values[i] = val
-        if i == self._i:
-            self.display_value()
-        self.publish_state()
-
-    def update_value(self):
-        if not self.switch:
-            return
-
-        if not self._pres[self._i]:
-            self.display_value()
-            return
-
-        pixels = self.to_pixels(self._pres[self._i])
-        self.sense.set_pixels(pixels)
-
-        self.timer = Timer(0.5, self.display_value, kwargs=dict(timer=True))
-        self.timer.start()
-
-    def display_value(self, timer=False):
-        if (not timer and self.timer.is_alive()) or not self.switch:
-            return
-        self.timer.cancel()
-
-        pixels = self.to_pixels(self._values[self._i])
-        self.sense.set_pixels(pixels)
-
-    def to_pixels(self, text):
-        if text:
-            return [
-                self.color[self._i] if x else [0, 0, 0]
-                for x in self.font.draw(text).crop(8, 8).todata(3)
-            ]
-
-        return [self.color[self._i]] * 64
-
-    def switch_screen(self, event):
-        if event.action == ACTION_RELEASED:
-            self._i = (self._i + 1) % self._n
-            self.switch = True
-
-    def switch_screen_rev(self, event):
-        if event.action == ACTION_RELEASED:
-            self._i = (self._i - 1) % self._n
-            self.switch = True
-
-    def toggle(self, event):
-        if event.action == ACTION_HELD:
-            if not self._toggled:
-                self.low_light = not self.low_light
-                self._toggled = True
-        if event.action == ACTION_RELEASED:
-            if self._toggled:
-                self._toggled = False
-            else:
-                self.switch = not self.switch
diff --git a/oin_ha/sensors/__init__.py b/oin_ha/sensors/__init__.py
deleted file mode 100644
index 1ca1595..0000000
--- a/oin_ha/sensors/__init__.py
+++ /dev/null
@@ -1,129 +0,0 @@
-import json
-
-from sense_hat import SenseHat
-
-
-class Sensors:
-    def __init__(self, mqttc, uid, name):
-        self.mqttc = mqttc
-        self.sense = SenseHat()
-        self.uid = uid
-        self.name = name
-
-        self.init_sensors()
-        self.mqttc.will_set(self.availability_topic, "offline", retain=True)
-
-    @property
-    def device(self):
-        return {
-            "identifiers": [self.uid],
-            "name": self.name,
-        }
-
-    @property
-    def availability_topic(self):
-        return f"{self.uid}/availability"
-
-    @property
-    def state_topic(self):
-        return f"{self.uid}/state"
-
-    def init_sensors(self):
-        options = {
-            "device": self.device,
-            "availability_topic": self.availability_topic,
-            "state_topic": self.state_topic,
-            "entity_category": "diagnostic",
-        }
-
-        self.sensors = [
-            TemperatureSensor(
-                "Température",
-                self.uid,
-                "temperature",
-                self.sense.get_temperature,
-                **options,
-            ),
-            HumiditySensor(
-                "Humidité", self.uid, "humidity", self.sense.get_humidity, **options
-            ),
-            PressureSensor(
-                "Pression", self.uid, "pressure", self.sense.get_pressure, **options
-            ),
-        ]
-
-    def publish_discovery(self):
-        for sensor in self.sensors:
-            sensor.publish_discovery(self.mqttc)
-
-    def publish_online(self):
-        self.mqttc.publish(self.availability_topic, "online", retain=True)
-
-    def publish_state(self):
-        self.mqttc.publish(
-            self.state_topic,
-            json.dumps({sensor.slug: sensor.get_value() for sensor in self.sensors}),
-        )
-
-
-class SingleSensor:
-    def __init__(self, name, parent_uid, slug, get_value, **kwargs):
-        self.name = name
-        self.parent_uid = parent_uid
-        self.slug = slug
-        self.get_value = get_value
-        self.options = kwargs
-
-    def publish_discovery(self, mqttc):
-        mqttc.publish(
-            self.discovery_topic,
-            json.dumps(
-                {
-                    "name": self.name,
-                    "state_class": "MEASUREMENT",
-                    "unique_id": self.uid,
-                    "value_template": self.value_template,
-                }
-                | self.options
-            ),
-            retain=True,
-        )
-
-    @property
-    def uid(self):
-        return f"{self.parent_uid}_{self.slug}"
-
-    @property
-    def discovery_topic(self):
-        return f"homeassistant/sensor/{self.uid}/config"
-
-    @property
-    def value_template(self):
-        return "{{" + f"value_json.{self.slug}" + "}}"
-
-
-class TemperatureSensor(SingleSensor):
-    def __init__(self, name, parent_uid, slug, get_value, **kwargs):
-        super().__init__(name, parent_uid, slug, get_value, **kwargs)
-        self.options["device_class"] = "temperature"
-        self.options["icon"] = "mdi:thermometer"
-        self.options["suggested_display_precision"] = 1
-        self.options["unit_of_measurement"] = "°C"
-
-
-class HumiditySensor(SingleSensor):
-    def __init__(self, name, parent_uid, slug, get_value, **kwargs):
-        super().__init__(name, parent_uid, slug, get_value, **kwargs)
-        self.options["device_class"] = "humidity"
-        self.options["icon"] = "mdi:water-percent"
-        self.options["suggested_display_precision"] = 0
-        self.options["unit_of_measurement"] = "%"
-
-
-class PressureSensor(SingleSensor):
-    def __init__(self, name, parent_uid, slug, get_value, **kwargs):
-        super().__init__(name, parent_uid, slug, get_value, **kwargs)
-        self.options["device_class"] = "pressure"
-        self.options["icon"] = "mdi:gauge"
-        self.options["suggested_display_precision"] = 0
-        self.options["unit_of_measurement"] = "mbar"
diff --git a/oin_thermostat/__main__.py b/oin_thermostat/__main__.py
new file mode 100644
index 0000000..853abdb
--- /dev/null
+++ b/oin_thermostat/__main__.py
@@ -0,0 +1,15 @@
+import logging
+
+from .mqtt import HAClient
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+
+    client = HAClient(
+        "climate.chaudiere",
+        ["sensor.esptic_tempo", "sensor.rte_tempo_prochaine_couleur"],
+    )
+
+    client.connect()
+
+    client.loop()
diff --git a/oin_thermostat/mqtt.py b/oin_thermostat/mqtt.py
new file mode 100644
index 0000000..7a71055
--- /dev/null
+++ b/oin_thermostat/mqtt.py
@@ -0,0 +1,118 @@
+import json
+import logging
+
+import paho.mqtt.client as mqtt
+
+from .screen import Screen
+from .select import Selector
+
+logger = logging.getLogger(__name__)
+
+
+class HAClient:
+    def __init__(self, entity, secondary_entities=[]):
+        self.entity = entity
+        self.secondary_entities = secondary_entities
+
+        self.state_topic = "oin/state"
+        self.availability_topic = "oin/availability"
+
+        self.client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
+        self.client.username_pw_set(username="oin", password="n+Bi58l7LxbH5nEJ")
+
+        self.screen = Screen()
+        self.selector = Selector(self.send_data)
+
+    @property
+    def ha_options(self):
+        return {
+            "dev": {
+                "ids": "oin",
+                "name": "Oin",
+            },
+            "o": {
+                "name": "Oin",
+            },
+            "availability_topic": self.availability_topic,
+            "state_topic": self.state_topic,
+            "cmps": self.selector.ha_options,
+        }
+
+    def connect(self):
+        logger.debug("Connecting to HA...")
+        self.client.will_set(self.availability_topic, "offline", retain=True)
+        self.client.connect("homeassistant.local", 1883, 60)
+
+        self.subscribe(entity_topic(self.entity), self.state_update)
+        for entity in self.secondary_entities:
+            self.subscribe(entity_topic(entity, "state"), self.secondary_state_update)
+
+        self.publish("homeassistant/device/oin/config", self.ha_options, retain=True)
+        self.client.publish(self.availability_topic, "online", retain=True)
+
+    def publish(self, topic, data, **kwargs):
+        logger.debug(f"Sending message on topic <{topic}>: {json.dumps(data)}")
+        self.client.publish(topic, json.dumps(data), **kwargs)
+
+    def subscribe(self, topic, callback):
+        logger.debug(f"Subscribe to <{topic}>")
+        self.client.subscribe(topic)
+        self.client.message_callback_add(topic, callback)
+
+    def unsubscribe(self, topic):
+        logger.debug(f"Unsubscribe from <{topic}>")
+        self.client.unsubscribe(topic)
+
+    def loop(self):
+        logger.info("Starting MQTT client loop")
+        self.client.loop_forever()
+
+    def state_update(self, client: mqtt.Client, userdata, message: mqtt.MQTTMessage):
+        logger.debug(f"Message received on topic <{message.topic}>: {message.payload}.")
+
+        subtopic = message.topic.rsplit("/", maxsplit=1)[1]
+
+        match subtopic:
+            case "current_temperature":
+                self.screen.value = parse(message)
+            case "temperature":
+                if (value := parse(message)) != self.selector.temperature:
+                    self.screen.tmp_value = value
+                    self.selector.temperature = value
+            case "hvac_action":
+                self.screen.mode = parse(message)
+            case "preset_modes":
+                if (value := parse(message)) != self.selector.preset_modes:
+                    self.selector.preset_modes = value
+            case "preset_mode":
+                if (value := parse(message)) != self.selector.mode:
+                    self.selector.mode = value
+            case "state":
+                match message.payload.decode():
+                    case "heat":
+                        self.selector.switch = True
+                    case "off":
+                        self.selector.switch = False
+
+    def secondary_state_update(
+        self, client: mqtt.Client, userdata, message: mqtt.MQTTMessage
+    ):
+        logger.debug(f"Message received on topic <{message.topic}>: {message.payload}.")
+
+        _, grp, ent, subtopic = message.topic.split("/")
+        idx = self.secondary_entities.index(f"{grp}.{ent}")
+
+        if subtopic == "state":
+            self.screen.secondary |= {idx: message.payload.decode()}
+
+    def send_data(self, data):
+        self.publish(self.state_topic, data)
+
+
+def parse(message):
+    return json.loads(message.payload.decode())
+
+
+def entity_topic(entity, subtopic="#"):
+    topic = entity.replace(".", "/")
+    return f"homeassistant/{topic}/{subtopic}"
diff --git a/oin_thermostat/screen.py b/oin_thermostat/screen.py
new file mode 100644
index 0000000..9a32a95
--- /dev/null
+++ b/oin_thermostat/screen.py
@@ -0,0 +1,140 @@
+import logging
+import math
+from threading import Timer
+
+import bdfparser
+from sense_hat import SenseHat
+
+logger = logging.getLogger(__name__)
+
+COLORS = {
+    "Bleu": [0, 0, 255],
+    "Blanc": [0, 0, 0],
+    "Rouge": [255, 0, 0],
+    "Verte": [0, 127, 31],
+    "Jaune": [255, 255, 0],
+    "heat": [255, 0, 0],
+    "heating": [255, 0, 0],
+    "idle": [127, 0, 255],
+    "off": [127, 127, 127],
+    "on_setting": [255, 255, 0],
+    "off_setting": [255, 255, 255],
+    None: [0, 0, 0],
+}
+
+
+class Screen:
+    def __init__(self):
+        self.sense = SenseHat()
+        self._value = ""
+        self._tmp = False
+        self._tmp_value = None
+        self._mode = None
+        self.font = bdfparser.Font("src/tom-thumb.bdf")
+        self._secondary = dict()
+        self._secondary_pixels = [[0, 0, 0]] * 8
+
+        self.timer = Timer(0, self.set_pixels)
+
+        self._held = False
+        self.sense.stick.direction_middle = self.stick_click
+
+    @property
+    def value(self):
+        return self._value
+
+    @value.setter
+    def value(self, value):
+        logger.debug(f"Updated value: <{value}>")
+
+        self._value = format_value(value)
+        if not self._tmp:
+            self.set_pixels()
+
+    @property
+    def color(self):
+        return COLORS.get(self.mode, [0, 0, 0])
+
+    @property
+    def mode(self):
+        return self._mode
+
+    @mode.setter
+    def mode(self, value):
+        self._mode = value
+        if not self._tmp:
+            self.set_pixels()
+
+    @property
+    def tmp_value(self):
+        return self._tmp_value
+
+    @tmp_value.setter
+    def tmp_value(self, value):
+        logger.debug(f"Show value: <{value}>")
+
+        self.timer.cancel()
+        self._tmp_value = format_value(value)
+        self.show_tmp()
+
+    def show_tmp(self):
+        self._tmp = True
+        self.set_pixels(
+            self.tmp_value,
+            color=COLORS.get("off_setting" if self.mode == "off" else "on_setting"),
+        )
+        self.timer = Timer(3, self.set_pixels)
+        self.timer.start()
+
+    def set_pixels(self, value=None, color=None, bg_color=[0, 0, 0]):
+        if value is None:
+            value = self.value
+            self._tmp = False
+        if color is None:
+            color = self.color
+
+        if value:
+            pixels = [
+                color if x else bg_color
+                for x in self.font.draw(value, mode=0).crop(8, 7).todata(3)
+            ]
+        else:
+            pixels = 48 * [[0, 0, 0]]
+        pixels += self.secondary_pixels
+
+        self.sense.set_pixels(pixels)
+
+    @property
+    def secondary(self):
+        return self._secondary
+
+    @property
+    def secondary_pixels(self):
+        return self._secondary_pixels
+
+    @secondary.setter
+    def secondary(self, value):
+        self._secondary = value
+
+        for idx in range(2):
+            self._secondary_pixels[4 * idx : 4 * (idx + 1)] = [
+                COLORS.get(value.get(idx, None), [0, 0, 0])
+            ] * 4
+
+        if not self._tmp:
+            self.set_pixels()
+
+    def stick_click(self, event):
+        match (event.action, self._held):
+            case ("held", False):
+                self._held = True
+            case ("released", True):
+                self._held = False
+            case ("released", False):
+                self.show_tmp()
+
+
+def format_value(value):
+    v = math.trunc(value)
+    d = "." if (value - v) >= 0.5 else ""
+    return f"{v}{d}"
diff --git a/oin_thermostat/select.py b/oin_thermostat/select.py
new file mode 100644
index 0000000..a6c1976
--- /dev/null
+++ b/oin_thermostat/select.py
@@ -0,0 +1,90 @@
+import logging
+import math
+
+from sense_hat import ACTION_HELD, ACTION_RELEASED, SenseHat
+
+logger = logging.getLogger(__name__)
+
+
+class Selector:
+    def __init__(self, send_data):
+        self.stick = SenseHat().stick
+        self.temperature = None
+        self.mode = None
+        self.switch = None
+        self.preset_modes = []
+        self.send_data = send_data
+        self.switch_held = False
+        self.default_data = {"temperature": None, "mode": None, "switch": None}
+
+        self.stick.direction_middle = self.toggle
+
+        self.stick.direction_up = self.increase_temperature
+        self.stick.direction_down = self.decrease_temperature
+
+        self.stick.direction_right = self.next_mode
+        self.stick.direction_left = self.prev_mode
+
+    @property
+    def ha_options(self):
+        return {
+            "temperature": {
+                "p": "sensor",
+                "value_template": "{{ value_json.temperature }}",
+                "unique_id": "oin_temp",
+                "device_class": "temperature",
+                "entity_category": "diagnostic",
+                "icon": "mdi:thermostat",
+                "unit_of_measurement": "°C",
+            },
+            "mode": {
+                "p": "sensor",
+                "name": "Mode",
+                "value_template": "{{ value_json.mode }}",
+                "unique_id": "oin_mode",
+                "entity_category": "diagnostic",
+                "icon": "mdi:thermostat-auto",
+            },
+            "switch": {
+                "p": "sensor",
+                "name": "Switch",
+                "value_template": "{{ value_json.switch }}",
+                "unique_id": "oin_switch",
+                "entity_category": "diagnostic",
+                "icon": "mdi:thermostat-auto",
+            },
+        }
+
+    def increase_temperature(self, event):
+        if event.action != ACTION_RELEASED and self.temperature is not None:
+            self.callback(temperature=math.floor(self.temperature * 2) / 2 + 0.5)
+
+    def decrease_temperature(self, event):
+        if event.action != ACTION_RELEASED and self.temperature is not None:
+            self.callback(temperature=math.ceil(self.temperature * 2) / 2 - 0.5)
+
+    def next_mode(self, event):
+        if event.action != ACTION_RELEASED and self.mode is not None:
+            self.callback(
+                mode=self.preset_modes[
+                    (self.preset_modes.index(self.mode) + 1) % len(self.preset_modes)
+                ]
+            )
+
+    def prev_mode(self, event):
+        if event.action != ACTION_RELEASED and self.mode is not None:
+            self.callback(
+                mode=self.preset_modes[
+                    (self.preset_modes.index(self.mode) - 1) % len(self.preset_modes)
+                ]
+            )
+
+    def toggle(self, event):
+        if not self.switch_held and event.action == ACTION_HELD:
+            self.switch_held = True
+            self.callback(switch="off" if self.switch else "heat")
+        elif self.switch_held and event.action == ACTION_RELEASED:
+            self.switch_held = False
+
+    def callback(self, **kwargs):
+        self.send_data(self.default_data | kwargs)
diff --git a/oin_thermostat/src/tom-thumb.bdf b/oin_thermostat/src/tom-thumb.bdf
new file mode 100644
index 0000000..e69de29