From 2cf78c3fc80bcadf5fc31f217b78b187448dc5ab Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Thu, 22 Jan 2026 22:48:15 +0100
Subject: add toilet light

---
 esphome/config/toiletlight.yaml | 128 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 esphome/config/toiletlight.yaml

diff --git a/esphome/config/toiletlight.yaml b/esphome/config/toiletlight.yaml
new file mode 100644
index 0000000..41cf154
--- /dev/null
+++ b/esphome/config/toiletlight.yaml
@@ -0,0 +1,128 @@
+substitutions:
+  device_name: toiletlight
+  friendly_name: "Toilet Light"
+
+esphome:
+  name: ${device_name}
+  friendly_name: ${friendly_name}
+  area: Toilet
+
+esp32:
+  variant: esp32c3
+  cpu_frequency: 80MHz
+  framework:
+    type: esp-idf
+    sdkconfig_options:
+      CONFIG_BOOTLOADER_SKIP_VALIDATE_ON_POWER_ON: y
+      CONFIG_BOOTLOADER_LOG_LEVEL_NONE: y
+      CONFIG_LOG_DEFAULT_LEVEL_NONE: y
+
+preferences:
+  flash_write_interval: 30s
+
+# Enable logging
+logger:
+  # disable logging for much faster startup
+  level: NONE
+  # make RXD / TXD available
+  baud_rate: 0
+
+# Enable Home Assistant API
+api:
+  encryption:
+    key: !secret api_encryption_key
+
+# OTA
+ota:
+  - platform: esphome
+    password: !secret ota_password
+
+# WiFi Credentials
+wifi:
+  domain: .lan
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+  # enabling power saves causes jitter!
+  power_save_mode: NONE
+
+  # Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "${device_name} Fallback Hotspot"
+    password: !secret wifi_ap_password
+
+captive_portal:
+
+light:
+  - id: toilet
+    platform: color_temperature
+    name: "Toilet"
+    color_temperature: pwm_warm_cold
+    # we are using pwm_dim_mapped to transform between min+max-power
+    # otherwise one can use:
+    #brightness: pwm_dim
+    #gamma_correct: 1.0
+    brightness: pwm_dim_mapped
+    cold_white_color_temperature: 6500 K
+    warm_white_color_temperature: 3000 K
+    default_transition_length: 300ms
+    initial_state:
+      state: true
+      brightness: 100%
+      color_temperature: 4500 K
+    restore_mode: RESTORE_DEFAULT_ON
+
+output:
+  - id: pwm_dim
+    platform: ledc
+    pin: GPIO1
+    frequency: 3900 Hz
+    channel: 0
+    min_power: 0.04
+    zero_means_zero: true
+
+  - id: pwm_warm
+    platform: ledc
+    pin: GPIO3
+    # original mcu uses 3900Hz
+    frequency: 24000 Hz
+    channel: 2
+
+  - id: pwm_cold
+    platform: ledc
+    pin: GPIO4
+    # original mcu uses 3900Hz
+    frequency: 24000 Hz
+    channel: 3
+    phase_angle: 180°
+
+  - platform: template
+    id: pwm_warm_cold
+    type: float
+    write_action:
+      - lambda: |-
+          auto warm = id(pwm_warm), cold = id(pwm_cold);
+          ESP_LOGD("cal", "warm: %f, cold: %f, phase: %f", state, 1-state, state*360.0);
+          warm->set_level(state);
+          cold->set_level(1 - state);
+          cold->set_phase_angle(state * 360.0);
+
+  # map output to range (min_power, max_power)
+  - platform: template
+    id: pwm_dim_mapped
+    type: float
+    write_action:
+      - lambda: |-
+          auto output = id(pwm_dim);
+          float min = output->get_min_power(), max = output->get_max_power();
+          float newlvl =  (state) ? state * (max - min) + min : 0;
+          ESP_LOGD("cal", "dim: %f -> %f", state, newlvl);
+          output->set_level(newlvl);
+
+# closed loop not implemented
+#sensor:
+#  - id: adc_cs
+#    platform: adc
+#    pin: GPIO0
+#    accuracy_decimals: 2
+#    attenuation: auto
+#    update_interval: 1s
-- 
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