rename folder

components/empty_sensor/README.md

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+```yaml
+# example configuration:
+
+sensor:
+  - platform: empty_sensor
+    name: Empty sensor
+```

components/empty_sensor/empty_sensor.cpp

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+#include "esphome/core/log.h"
+#include "empty_sensor.h"
+
+namespace esphome {
+namespace empty_sensor {
+
+static const char *TAG = "empty_sensor.sensor";
+
+void EmptySensor::setup() {
+  
+}
+
+void EmptySensor::loop() {
+  
+}
+
+void EmptySensor::update() {
+
+}
+
+void EmptySensor::dump_config() {
+    ESP_LOGCONFIG(TAG, "Empty custom sensor");
+}
+
+} //namespace empty_sensor
+} //namespace esphome

components/empty_sensor/empty_sensor.h

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+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome {
+namespace empty_sensor {
+
+class EmptySensor : public sensor::Sensor, public PollingComponent {
+    void setup() override;
+    void loop() override;
+    void update() override;
+    void dump_config() override;
+};
+
+} //namespace empty_sensor
+} //namespace esphome

components/empty_sensor/sensor.py

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+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+from esphome.const import CONF_ID, UNIT_EMPTY, ICON_EMPTY
+
+empty_sensor_ns = cg.esphome_ns.namespace('empty_sensor')
+
+EmptySensor = empty_sensor_ns.class_('EmptySensor', cg.PollingComponent)
+
+CONFIG_SCHEMA = sensor.sensor_schema(UNIT_EMPTY, ICON_EMPTY, 1).extend({
+    cv.GenerateID(): cv.declare_id(EmptySensor)
+}).extend(cv.polling_component_schema('60s'))
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield sensor.register_sensor(var, config)
+