Clarify e-paper dashboard and calendar pipeline by adding inline

comments.

esphome/epaperframe.yaml

@@ -1,7 +1,10 @@
+# Device identity shared by ESPHome and Home Assistant.
 substitutions:
   name: epaperframe
   friendly_name: "Info-Dashboard"
 
+# Startup selects the default page only after Home Assistant has had time to
+# provide the sensor states needed by its display lambda.
 esphome:
   name: ${name}
   friendly_name: ${friendly_name}
@@ -18,11 +21,15 @@ esphome:
       - display.page.show: calendar # temporary for power page dev
       - component.update: epaper
 
+# ESP32 target and ESP-IDF build settings for the hardware revision in use.
 esp32:
   board: nodemcu-32s
   framework:
     type: esp-idf
+    advanced:
+      minimum_chip_revision: "3.0"
 
+# Network access is required for Home Assistant state delivery and OTA updates.
 wifi:
   ssid: "Voltage-legacy"
   password: !secret voltage_legacy_psk
@@ -49,6 +56,13 @@ api:
 # Include ArduinoJson support for the compact calendar event feed.
 json:
 
+# Prevent refreshes when Home Assistant republishes unchanged calendar data.
+globals:
+  - id: last_rendered_calendar_entries
+    type: std::string
+    restore_value: no
+    initial_value: '""'
+
 ota:
   platform: esphome
   password: !secret ota
@@ -115,6 +129,7 @@ button:
       - display.page.show_next: epaper
       - component.update: epaper
 
+# Numeric telemetry received from Home Assistant for the environment dashboard.
 sensor:
   # WiFi signal strength
   - platform: wifi_signal
@@ -192,6 +207,7 @@ sensor:
     entity_id: sensor.radioaktive_strahlungsleistung
     id: radiation
 
+# Textual Home Assistant state, including the compact calendar payload and quote.
 text_sensor:
   - platform: homeassistant
     name: "Sun Rising ESP"
@@ -220,6 +236,19 @@ text_sensor:
     entity_id: sensor.epaper_kalenderdaten
     attribute: entries
     id: calendar_entries
+    # Refresh the e-paper only for changed agenda data while the calendar page
+    # is visible; Home Assistant may otherwise republish identical JSON.
+    on_value:
+      then:
+        - if:
+            condition:
+              and:
+                - display.is_displaying_page: calendar
+                - lambda: return x != id(last_rendered_calendar_entries);
+            then:
+              - lambda: id(last_rendered_calendar_entries) = x;
+              - component.update: epaper
+
 
   # Home Assistant selects one quote per day from its local quote library.
   - platform: homeassistant
@@ -228,6 +257,8 @@ text_sensor:
 
 
 
+# Time drives panel power maintenance, the environment refresh cadence, and the
+# midnight redraw that advances the calendar and daily quote.
 time:
   - platform: homeassistant
     id: homeassistant_time
@@ -241,15 +272,29 @@ time:
           - output.turn_on: power_key
           - delay: 0.5s
           - output.turn_off: power_key
-      # Every 10 minutes
+      # Environmental readings need their regular refresh. Calendar updates are
+      # instead triggered by changed event data while that page is active.
       - seconds: 0
         minutes: /10
+        then:
+          - if:
+              condition:
+                display.is_displaying_page: environment
+              then:
+                - logger.log:
+                    level: INFO
+                    format: "Timer based environment screen refresh"
+                - component.update: epaper
+      - seconds: 10
+        minutes: 0
+        hours: 0
         then:
           - logger.log:
               level: INFO
-              format: "Timer based screen refresh"
+              format: "Update screen on new day"
           - component.update: epaper
 
+# Visual assets used by both 1-bit e-paper pages.
 # Font definitions
 font:
   - file: "fonts/Roboto-Medium.ttf"
@@ -710,17 +755,21 @@ font:
         "󰀦", # mdi-alert
       ]
 
+# Binary logo stored in firmware for rendering without network access.
 image:
-  - file: "epaperframe/C1024_logo_flat_bw.png"
+  - platform: file
+    file: "epaperframe/C1024_logo_flat_bw.png"
     id: c1024_logo
     type: binary
     resize: 77x40
-    invert_alpha: True
+    invert_alpha: true
 
+# Shared SPI bus for the Waveshare e-paper panel.
 spi:
   clk_pin: 23
   mosi_pin: 22
 
+# The two pages draw directly onto the 640x384 1-bit Waveshare e-paper panel.
 display:
   - platform: waveshare_epaper
     id: epaper
@@ -732,8 +781,11 @@ display:
     # full_update_every: 30 # not supported on this display
     update_interval: never
     pages:
+      # Environmental telemetry dashboard, refreshed on the 10-minute timer.
       - id: environment
         lambda: |-
+          // Snapshot all Home Assistant values once per render so each panel uses
+          // a consistent set of readings throughout this e-paper refresh.
           /* Outdoor */
           float outdoor_temp = id(temp_outdoor).state;
           int outdoor_humid = int(id(humid_outdoor).state);
@@ -757,10 +809,11 @@ display:
           float childrensroom_co2 = id(co2_childrensroom).state;
           int childrensroom_pm25 = int(id(pm25_childrensroom).state);
 
+          // Reuse one room widget layout by moving its origin across the two-column grid.
           int offsetX = 0;
           int offsetY = 0;
 
-          /* OUTSIDE */
+          /* OUTSIDE: logo, headline, and outdoor sensor summary */
           it.print(10, 10, id(sensor_unit), "Umwelt");
           /*
           Draw the outline of a rectangle with the top left at [86,21],
@@ -1104,8 +1157,11 @@ display:
             }
           }
 
+      # Calendar agenda, month grid, and daily quote; redraws when event JSON changes.
       - id: calendar
         lambda: |-
+          // Use Home Assistant time for all date labels, month calculations, and
+          // the footer, avoiding locale-dependent formatting on the ESP32.
           auto now = id(homeassistant_time).now();
           const char *months[] = {"Januar", "Februar", "März", "April", "Mai", "Juni",
                                   "Juli", "August", "September", "Oktober", "November", "Dezember"};
@@ -1115,6 +1171,8 @@ display:
           const int month = now.month;
           const int today = now.day_of_month;
 
+          // Date helpers build a Monday-first month grid and ISO-8601 week numbers
+          // without relying on platform-specific C library time functions.
           auto days_in_month = [](int calendar_year, int calendar_month) {
             const int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
             if (calendar_month == 2) {
@@ -1154,6 +1212,8 @@ display:
           it.line(10, 55, 355, 55);
           it.line(365, 10, 365, 352);
 
+          // Parse the compact JSON attribute produced by Home Assistant. The empty
+          // and error states below ensure a useful screen while data is unavailable.
           JsonDocument calendar_doc;
           const DeserializationError calendar_error = deserializeJson(calendar_doc, id(calendar_entries).state.c_str());
           JsonArray calendar_days = calendar_doc.as<JsonArray>();
@@ -1175,6 +1235,8 @@ display:
                 break;
               }
 
+              // A date rail occupies the left edge; event rows start alongside it
+              // and stop before the footer rather than overflowing the panel.
               const int group_y = agenda_y;
               int event_y = group_y;
               const int day_number = day["day"] | 0;
@@ -1216,6 +1278,8 @@ display:
 
 
           /* RIGHT TOP: month view, Monday-first with ISO week numbers */
+          // Draw only the five or six rows this month actually needs so no orphan
+          // week number is rendered beneath shorter months.
           char month_title[24];
           snprintf(month_title, sizeof(month_title), "%s %d", months[month - 1], year);
           it.printf(502, 18, id(sensor_unit), TextAlign::TOP_CENTER, "%s", month_title);
@@ -1264,6 +1328,7 @@ display:
           }
 
           /* RIGHT BOTTOM: daily quote selected by Home Assistant */
+          // Wrap on word boundaries into the fixed four-line, inverted quote panel.
           it.filled_rectangle(375, 220, 255, 130, COLOR_ON);
           std::string quote = "Zitat wird geladen.";
           if (id(demotivational_quote).has_state() && !id(demotivational_quote).state.empty()) {
@@ -1285,11 +1350,11 @@ display:
             while (quote_start < quote.length() && quote[quote_start] == ' ') quote_start++;
           }
 
-          /* FOOTER */
+          /* FOOTER: Footer is shared visual status: render timestamp plus a Wi-Fi-strength glyph. */
           it.strftime(614, 380, id(footer_font), TextAlign::BASELINE_RIGHT,
                       "Aktualisiert um %d.%m.%Y %H:%M", now);
 
-          /* WiFi Signal Strenght */
+          /* WiFi Signal strength */
           if(id(wifisignal).has_state()) {
             int x = 630;
             int y = 384;

esphome/m5stack-atom-echo.yaml

@@ -3,16 +3,16 @@
 substitutions:
   name: m5stack-atom-echo
   friendly_name: M5Stack Atom Echo
-  micro_wake_word_model: okay_nabu  # alexa, hey_jarvis, hey_mycroft are also supported
 
 esphome:
   name: ${name}
-  name_add_mac_suffix: False
+  name_add_mac_suffix: false
   friendly_name: ${friendly_name}
-  min_version: 2025.2.0
+  min_version: 2025.5.0
 
 esp32:
   board: m5stack-atom
+  cpu_frequency: 240MHz
   framework:
     type: esp-idf
 
@@ -63,14 +63,17 @@ microphone:
     i2s_din_pin: GPIO23
     adc_type: external
     pdm: true
+    sample_rate: 16000
+    correct_dc_offset: true
 
 speaker:
   - platform: i2s_audio
     id: echo_speaker
     i2s_dout_pin: GPIO22
     dac_type: external
-    bits_per_sample: 32bit
-    channel: right
+    bits_per_sample: 16bit
+    sample_rate: 16000
+    channel: stereo  # The Echo has poor playback audio quality when using mon audio
     buffer_duration: 60ms
 
 media_player:
@@ -80,7 +83,6 @@ media_player:
     announcement_pipeline:
       speaker: echo_speaker
       format: WAV
-    codec_support_enabled: false
     buffer_size: 6000
     volume_min: 0.4
     files:
@@ -91,14 +93,7 @@ media_player:
           condition:
             - microphone.is_capturing:
           then:
-            - if:
-                condition:
-                  lambda: return id(wake_word_engine_location).state == "On device";
-                then:
-                  - micro_wake_word.stop:
-                else:
-                  - voice_assistant.stop:
-            - script.execute: reset_led
+            - script.execute: stop_wake_word
       - light.turn_on:
           id: led
           blue: 100%
@@ -108,14 +103,18 @@ media_player:
           effect: none
     on_idle:
       - script.execute: start_wake_word
+      - script.execute: reset_led
 
 voice_assistant:
   id: va
-  microphone: echo_microphone
+  micro_wake_word:
+  microphone:
+    microphone: echo_microphone
+    channels: 0
+    gain_factor: 4
   media_player: echo_media_player
   noise_suppression_level: 2
   auto_gain: 31dBFS
-  volume_multiplier: 2.0
   on_listening:
     - light.turn_on:
         id: led
@@ -139,8 +138,26 @@ voice_assistant:
         brightness: 100%
         effect: none
   on_end:
-    - delay: 100ms
-    - script.execute: start_wake_word
+    # Handle the "nevermind" case where there is no announcement
+    - wait_until:
+        condition:
+          - media_player.is_announcing:
+        timeout: 0.5s
+    # Restart only mWW if enabled; streaming wake words automatically restart
+    - if:
+        condition:
+          - lambda: |-
+              return id(wake_word_engine_location).current_option() == "On device";
+        then:
+          - wait_until:
+              - and:
+                  - not:
+                      voice_assistant.is_running:
+                  - not:
+                      speaker.is_playing:
+          - lambda: id(va).set_use_wake_word(false);
+          - micro_wake_word.start:
+    - script.execute: reset_led
   on_error:
     - light.turn_on:
         id: led
@@ -155,11 +172,9 @@ voice_assistant:
     - delay: 2s  # Give the api server time to settle
     - script.execute: start_wake_word
   on_client_disconnected:
-    - voice_assistant.stop:
-    - micro_wake_word.stop:
+    - script.execute: stop_wake_word
   on_timer_finished:
-    - voice_assistant.stop:
-    - micro_wake_word.stop:
+    - script.execute: stop_wake_word
     - wait_until:
         not:
           microphone.is_capturing:
@@ -235,7 +250,8 @@ script:
     then:
       - if:
           condition:
-            - lambda: return id(wake_word_engine_location).state == "On device";
+            - lambda: |-
+                return id(wake_word_engine_location).current_option() == "On device";
             - switch.is_on: use_listen_light
           then:
             - light.turn_on:
@@ -248,7 +264,8 @@ script:
           else:
             - if:
                 condition:
-                  - lambda: return id(wake_word_engine_location).state != "On device";
+                  - lambda: |-
+                      return id(wake_word_engine_location).current_option() == "On device";
                   - switch.is_on: use_listen_light
                 then:
                   - light.turn_on:
@@ -262,27 +279,41 @@ script:
                   - light.turn_off: led
   - id: start_wake_word
     then:
-      - wait_until:
-          and:
-            - media_player.is_idle:
-            - speaker.is_stopped:
       - if:
           condition:
-            lambda: return id(wake_word_engine_location).state == "On device";
+            and:
+              - not:
+                  - voice_assistant.is_running:
+              - lambda: |-
+                  return id(wake_word_engine_location).current_option() == "On device";
           then:
-            - voice_assistant.stop
-            - micro_wake_word.stop:
-            - delay: 1s
-            - script.execute: reset_led
-            - script.wait: reset_led
+            - lambda: id(va).set_use_wake_word(false);
             - micro_wake_word.start:
-          else:
-            - if:
-                condition: voice_assistant.is_running
-                then:
-                  - voice_assistant.stop:
-                  - script.execute: reset_led
+      - if:
+          condition:
+            and:
+              - not:
+                  - voice_assistant.is_running:
+              - lambda: |-
+                  return id(wake_word_engine_location).current_option() == "In Home Assistant";
+          then:
+            - lambda: id(va).set_use_wake_word(true);
             - voice_assistant.start_continuous:
+  - id: stop_wake_word
+    then:
+      - if:
+          condition:
+            lambda: |-
+                  return id(wake_word_engine_location).current_option() == "In Home Assistant";
+          then:
+            - lambda: id(va).set_use_wake_word(false);
+            - voice_assistant.stop:
+      - if:
+          condition:
+            lambda: |-
+              return id(wake_word_engine_location).current_option() == "On device";
+          then:
+            - micro_wake_word.stop:
 
 switch:
   - platform: template
@@ -342,7 +373,7 @@ select:
           condition:
             lambda: return x == "In Home Assistant";
           then:
-            - micro_wake_word.stop
+            - micro_wake_word.stop:
             - delay: 500ms
             - lambda: id(va).set_use_wake_word(true);
             - voice_assistant.start_continuous:
@@ -351,9 +382,9 @@ select:
             lambda: return x == "On device";
           then:
             - lambda: id(va).set_use_wake_word(false);
-            - voice_assistant.stop
+            - voice_assistant.stop:
             - delay: 500ms
-            - micro_wake_word.start
+            - micro_wake_word.start:
 
 micro_wake_word:
   on_wake_word_detected:
@@ -361,4 +392,9 @@ micro_wake_word:
         wake_word: !lambda return wake_word;
   vad:
   models:
-    - model: ${micro_wake_word_model}
+    - model: okay_nabu
+      id: okay_nabu
+    - model: hey_mycroft
+      id: hey_mycroft
+    - model: hey_jarvis
+      id: hey_jarvis

esphome/riden-labornetzteil-18a.yaml

@@ -1,3 +1,5 @@
+# Source: https://github.com/wildekek/rdtech-esphome
+
 substitutions:
   name: "riden-labornetzteil-18a"
   friendly_name: "Riden Labornetzteil 18A"
@@ -8,7 +10,7 @@ substitutions:
   device_friendly_name: "Riden RD6018"
   device_description: "Monitor and control a RD6018 PSU via WiFi"
   time_timezone: "Europe/Berlin"
-  
+
   # Model specific settings (Don't change these!)
   RD6006_voltage_maximum: "60"
   RD6006_voltage_accuracy: "2"
@@ -16,13 +18,17 @@ substitutions:
   RD6006_current_maximum: "6"
   RD6006_current_accuracy: "3"
   RD6006_current_multiplier: "0.001"
-  
+  RD6006_power_accuracy: "2"
+  RD6006_power_multiplier: "0.01"
+
   RD6006P_voltage_maximum: "60"
   RD6006P_voltage_accuracy: "3"
   RD6006P_voltage_multiplier: "0.001"
   RD6006P_current_maximum: "6"
   RD6006P_current_accuracy: "4"
   RD6006P_current_multiplier: "0.0001"
+  RD6006P_power_accuracy: "3"
+  RD6006P_power_multiplier: "0.001"
 
   RD6012_voltage_maximum: "60"
   RD6012_voltage_accuracy: "2"
@@ -30,6 +36,8 @@ substitutions:
   RD6012_current_maximum: "12"
   RD6012_current_accuracy: "2"
   RD6012_current_multiplier: "0.01"
+  RD6012_power_accuracy: "2"
+  RD6012_power_multiplier: "0.01"
 
   RD6018_voltage_maximum: "60"
   RD6018_voltage_accuracy: "2"
@@ -37,6 +45,8 @@ substitutions:
   RD6018_current_maximum: "18"
   RD6018_current_accuracy: "2"
   RD6018_current_multiplier: "0.01"
+  RD6018_power_accuracy: "2"
+  RD6018_power_multiplier: "0.01"
 
 esphome:
   name: $device_name
@@ -45,7 +55,7 @@ esphome:
   name_add_mac_suffix: false
   project:
     name: "wildekek.rd6006-controller"
-    version: "1.4.1"
+    version: "1.5"
 
 esp8266:
   board: esp12e
@@ -56,7 +66,7 @@ network:
 wifi:
   ssid: "Voltage-legacy"
   password: !secret voltage_legacy_psk
-  #use_address: riden-labornetzteil-18a.home  
+  use_address: riden-labornetzteil-18a.home
   power_save_mode: high
   fast_connect: on
   min_auth_mode: WPA2
@@ -76,7 +86,7 @@ logger:
 
 # Enable Home Assistant API
 api:
-  encryption: 
+  encryption:
     key: !secret apikey
 
 ota:
@@ -152,7 +162,9 @@ sensor:
     on_value:
       then:
         - lambda: |-
-            id(model_name).publish_state(value_accuracy_to_string(x, 0));
+            id(model_name).publish_state(
+              std::to_string(static_cast<uint16_t>(x))
+            );
 
   - platform: modbus_controller
     name: "Serial Number"
@@ -164,7 +176,7 @@ sensor:
     register_type: holding
     value_type: U_DWORD
     accuracy_decimals: 0
-  
+
   - platform: modbus_controller
     modbus_controller_id: powersupply
     address: 3
@@ -213,9 +225,9 @@ sensor:
     unit_of_measurement: "W"
     register_type: holding
     value_type: U_DWORD
-    accuracy_decimals: 2
+    accuracy_decimals: ${${model}_power_accuracy}
     filters:
-      - multiply: 0.01
+      - multiply: ${${model}_power_multiplier}
 
   - platform: modbus_controller
     modbus_controller_id: powersupply
@@ -226,9 +238,9 @@ sensor:
     unit_of_measurement: "V"
     register_type: holding
     value_type: U_WORD
-    accuracy_decimals: ${${model}_voltage_accuracy}
+    accuracy_decimals: 2
     filters:
-      - multiply: ${${model}_voltage_multiplier}
+      - multiply: 0.01
 
   - platform: modbus_controller
     modbus_controller_id: powersupply
@@ -266,10 +278,10 @@ sensor:
     unit_of_measurement: "V"
     register_type: holding
     value_type: U_WORD
-    accuracy_decimals: ${${model}_voltage_accuracy}
+    accuracy_decimals: 2
     filters:
-      - multiply: ${${model}_voltage_multiplier}
-  
+      - multiply: 0.01
+
   - platform: modbus_controller
     name: "Temperature"
     device_class: temperature
@@ -279,7 +291,7 @@ sensor:
     address: 4
     value_type: S_DWORD
     unit_of_measurement: "°C"
-    
+
   - platform: modbus_controller
     name: "Temperature external"
     state_class: measurement
@@ -289,7 +301,7 @@ sensor:
     value_type: S_DWORD
     device_class: temperature
     unit_of_measurement: "°C"
-    
+
   - platform: wifi_signal
     name: "Wi-Fi Signal"
     disabled_by_default: True
@@ -408,7 +420,7 @@ number:
     step: ${${model}_voltage_multiplier}
     lambda: !lambda return x * ${${model}_voltage_multiplier};
     write_lambda: !lambda return x * (1/${${model}_voltage_multiplier});
-  
+
   - platform: modbus_controller
     modbus_controller_id: powersupply
     name: "Output current"
@@ -437,7 +449,6 @@ number:
     lambda: !lambda return x * ${${model}_voltage_multiplier};
     write_lambda: !lambda return x * (1/${${model}_voltage_multiplier});
 
-
   - platform: modbus_controller
     modbus_controller_id: powersupply
     name: "Over Current Protection"

esphome/riden-labornetzteil-6a.yaml

@@ -1,3 +1,5 @@
+# Source: https://github.com/wildekek/rdtech-esphome
+
 substitutions:
   name: "riden-labornetzteil-6a"
   friendly_name: "Riden Labornetzteil 6A"
@@ -8,7 +10,7 @@ substitutions:
   device_friendly_name: "Riden RD6006"
   device_description: "Monitor and control a RD6006 PSU via WiFi"
   time_timezone: "Europe/Berlin"
-  
+
   # Model specific settings (Don't change these!)
   RD6006_voltage_maximum: "60"
   RD6006_voltage_accuracy: "2"
@@ -16,13 +18,17 @@ substitutions:
   RD6006_current_maximum: "6"
   RD6006_current_accuracy: "3"
   RD6006_current_multiplier: "0.001"
-  
+  RD6006_power_accuracy: "2"
+  RD6006_power_multiplier: "0.01"
+
   RD6006P_voltage_maximum: "60"
   RD6006P_voltage_accuracy: "3"
   RD6006P_voltage_multiplier: "0.001"
   RD6006P_current_maximum: "6"
   RD6006P_current_accuracy: "4"
   RD6006P_current_multiplier: "0.0001"
+  RD6006P_power_accuracy: "3"
+  RD6006P_power_multiplier: "0.001"
 
   RD6012_voltage_maximum: "60"
   RD6012_voltage_accuracy: "2"
@@ -30,6 +36,8 @@ substitutions:
   RD6012_current_maximum: "12"
   RD6012_current_accuracy: "2"
   RD6012_current_multiplier: "0.01"
+  RD6012_power_accuracy: "2"
+  RD6012_power_multiplier: "0.01"
 
   RD6018_voltage_maximum: "60"
   RD6018_voltage_accuracy: "2"
@@ -37,6 +45,8 @@ substitutions:
   RD6018_current_maximum: "18"
   RD6018_current_accuracy: "2"
   RD6018_current_multiplier: "0.01"
+  RD6018_power_accuracy: "2"
+  RD6018_power_multiplier: "0.01"
 
 esphome:
   name: $device_name
@@ -45,7 +55,7 @@ esphome:
   name_add_mac_suffix: false
   project:
     name: "wildekek.rd6006-controller"
-    version: "1.4.1"
+    version: "1.5"
 
 esp8266:
   board: esp12e
@@ -56,7 +66,7 @@ network:
 wifi:
   ssid: "Voltage-legacy"
   password: !secret voltage_legacy_psk
-  #use_address: riden-labornetzteil-6a.home  
+  use_address: riden-labornetzteil-6a.home
   power_save_mode: high
   fast_connect: on
   min_auth_mode: WPA2
@@ -76,7 +86,7 @@ logger:
 
 # Enable Home Assistant API
 api:
-  encryption: 
+  encryption:
     key: !secret apikey
 
 ota:
@@ -152,7 +162,9 @@ sensor:
     on_value:
       then:
         - lambda: |-
-            id(model_name).publish_state(value_accuracy_to_string(x, 0));
+            id(model_name).publish_state(
+              std::to_string(static_cast<uint16_t>(x))
+            );
 
   - platform: modbus_controller
     name: "Serial Number"
@@ -164,7 +176,7 @@ sensor:
     register_type: holding
     value_type: U_DWORD
     accuracy_decimals: 0
-  
+
   - platform: modbus_controller
     modbus_controller_id: powersupply
     address: 3
@@ -213,9 +225,9 @@ sensor:
     unit_of_measurement: "W"
     register_type: holding
     value_type: U_DWORD
-    accuracy_decimals: 2
+    accuracy_decimals: ${${model}_power_accuracy}
     filters:
-      - multiply: 0.01
+      - multiply: ${${model}_power_multiplier}
 
   - platform: modbus_controller
     modbus_controller_id: powersupply
@@ -226,9 +238,9 @@ sensor:
     unit_of_measurement: "V"
     register_type: holding
     value_type: U_WORD
-    accuracy_decimals: ${${model}_voltage_accuracy}
+    accuracy_decimals: 2
     filters:
-      - multiply: ${${model}_voltage_multiplier}
+      - multiply: 0.01
 
   - platform: modbus_controller
     modbus_controller_id: powersupply
@@ -266,10 +278,10 @@ sensor:
     unit_of_measurement: "V"
     register_type: holding
     value_type: U_WORD
-    accuracy_decimals: ${${model}_voltage_accuracy}
+    accuracy_decimals: 2
     filters:
-      - multiply: ${${model}_voltage_multiplier}
-  
+      - multiply: 0.01
+
   - platform: modbus_controller
     name: "Temperature"
     device_class: temperature
@@ -279,7 +291,7 @@ sensor:
     address: 4
     value_type: S_DWORD
     unit_of_measurement: "°C"
-    
+
   - platform: modbus_controller
     name: "Temperature external"
     state_class: measurement
@@ -289,7 +301,7 @@ sensor:
     value_type: S_DWORD
     device_class: temperature
     unit_of_measurement: "°C"
-    
+
   - platform: wifi_signal
     name: "Wi-Fi Signal"
     disabled_by_default: True
@@ -408,7 +420,7 @@ number:
     step: ${${model}_voltage_multiplier}
     lambda: !lambda return x * ${${model}_voltage_multiplier};
     write_lambda: !lambda return x * (1/${${model}_voltage_multiplier});
-  
+
   - platform: modbus_controller
     modbus_controller_id: powersupply
     name: "Output current"

python_scripts/epaper_calendar_data.py

@@ -1,3 +1,5 @@
+# Display contract shared with the ESPHome calendar page: compact German labels,
+# a bounded number of events, and strings sized for the e-paper layout.
 CALENDAR_NAMES = {
     "calendar.tkrz_kalender": "Arbeit",
     "calendar.privat": "Privat",
@@ -9,6 +11,7 @@ MAX_TITLE_LENGTH = 22
 MAX_META_LENGTH = 35
 
 
+# Keep variable event text within the fixed-width e-paper agenda columns.
 def shorten(value, maximum):
     value = (value or "").strip()
     if len(value) <= maximum:
@@ -16,11 +19,13 @@ def shorten(value, maximum):
     return value[: maximum - 3].rstrip() + "..."
 
 
+# Convert one Home Assistant calendar event into the small JSON shape consumed
+# by ESPHome, separating all-day, start-time, end-time, and metadata display data.
 def compact_event(event, calendar_name):
     start = event.get("start", "")
     all_day = "T" not in start
     end = event.get("end", "")
-    time = "ganztägig" if all_day else start[11:16]
+    time = "ganzt." if all_day else start[11:16]
     end_time = "" if all_day or "T" not in end else end[11:16]
 
     location = (event.get("location") or "").split("\n")[0].strip()
@@ -37,6 +42,8 @@ def compact_event(event, calendar_name):
     }
 
 
+# Read the calendar.get_events response supplied by the calling template sensor
+# and collect events under the date on which they should appear in the agenda.
 calendar_data = data.get("calendar", {})
 today = str(data.get("now", ""))[:10]
 events_by_date = {}
@@ -62,6 +69,8 @@ for calendar_id, calendar in calendar_data.items():
             compact_event(event, calendar_name)
         )
 
+# Sort day groups and events, put all-day entries first, and cap the payload so
+# deserializing it stays safe on the ESP32 without PSRAM.
 entries = []
 entry_count = 0
 for date in sorted(events_by_date):
@@ -84,4 +93,5 @@ for date in sorted(events_by_date):
         }
     )
 
+# Return only the normalized agenda payload to the Home Assistant template sensor.
 output["entries"] = entries

sensors.yaml

@@ -11,7 +11,7 @@
     host: !secret router_ip
     community: !secret router_community
 #    baseoid: .1.3.6.1.2.1.31.1.1.1.6.511
-    baseoid: .1.3.6.1.2.1.2.2.1.10.25
+    baseoid: .1.3.6.1.2.1.2.2.1.10.12
     version: 2c
     unit_of_measurement: "Octets"
   - platform: snmp
@@ -20,7 +20,7 @@
     host: !secret router_ip
     community: !secret router_community
 #    baseoid: .1.3.6.1.2.1.31.1.1.1.10.511
-    baseoid: .1.3.6.1.2.1.2.2.1.16.25
+    baseoid: .1.3.6.1.2.1.2.2.1.16.12
     version: 2c
     unit_of_measurement: "Octets"