diff --git a/components/expanders/ads1015/definition.json b/components/expanders/ads1015/definition.json
index 4181edcc..0e24cda9 100644
--- a/components/expanders/ads1015/definition.json
+++ b/components/expanders/ads1015/definition.json
@@ -6,6 +6,21 @@
   "productURL": "https://www.adafruit.com/product/1083",
   "documentationURL": "https://learn.adafruit.com/adafruit-4-channel-adc-breakouts/",
   "i2cAddresses": ["0x48", "0x49", "0x4A", "0x4B"],
+  "settings": {
+    "gain": {
+      "displayName": "Gain",
+      "description": "Programmable gain amplifier setting.",
+      "default": 0,
+      "options": [
+        "2/3x (±6.144V)",
+        "1x (±4.096V)",
+        "2x (±2.048V)",
+        "4x (±1.024V)",
+        "8x (±0.512V)",
+        "16x (±0.256V)"
+      ]
+    }
+  },
   "pins": [
     {"displayName": "A0", "name": "0", "hasGPIO": false, "hasADC": true},
     {"displayName": "A1", "name": "1", "hasGPIO": false, "hasADC": true},
diff --git a/components/expanders/ads1115/definition.json b/components/expanders/ads1115/definition.json
index fba9f782..f6da8686 100644
--- a/components/expanders/ads1115/definition.json
+++ b/components/expanders/ads1115/definition.json
@@ -6,10 +6,25 @@
   "productURL": "https://www.adafruit.com/product/1085",
   "documentationURL": "https://learn.adafruit.com/adafruit-4-channel-adc-breakouts/",
   "i2cAddresses": ["0x48", "0x49", "0x4A", "0x4B"],
+  "settings": {
+    "gain": {
+      "displayName": "Gain",
+      "description": "Programmable gain amplifier setting.",
+      "default": 0,
+      "options": [
+        "2/3x (±6.144V)",
+        "1x (±4.096V)",
+        "2x (±2.048V)",
+        "4x (±1.024V)",
+        "8x (±0.512V)",
+        "16x (±0.256V)"
+      ]
+    }
+  },
   "pins": [
     {"displayName": "A0", "name": "0", "hasGPIO": false, "hasADC": true},
     {"displayName": "A1", "name": "1", "hasGPIO": false, "hasADC": true},
     {"displayName": "A2", "name": "2", "hasGPIO": false, "hasADC": true},
     {"displayName": "A3", "name": "3", "hasGPIO": false, "hasADC": true}
   ]
-}
\ No newline at end of file
+}
diff --git a/components/expanders/schema.json b/components/expanders/schema.json
index 9b878b43..a64e127e 100644
--- a/components/expanders/schema.json
+++ b/components/expanders/schema.json
@@ -3,6 +3,37 @@
   "description": "A GPIO/Peripheral Expander component for use in Adafruit IO",
   "type": "object",
   "$defs": {
+    "setting": {
+      "type": "object",
+      "description": "A configurable device setting. Firmware receives the selected option's 0-based index.",
+      "required": ["displayName", "options"],
+      "additionalProperties": false,
+      "properties": {
+        "displayName": {
+          "description": "Human-readable label shown in the UI.",
+          "type": "string",
+          "minLength": 1,
+          "maxLength": 30
+        },
+        "description": {
+          "description": "Optional helper text explaining what this setting controls.",
+          "type": "string",
+          "minLength": 1,
+          "maxLength": 255
+        },
+        "default": {
+          "description": "Index of the default option (0-based). Defaults to 0 if omitted.",
+          "type": "integer",
+          "minimum": 0
+        },
+        "options": {
+          "description": "Ordered list of option labels. The selected index is sent to firmware.",
+          "type": "array",
+          "items": { "type": "string" },
+          "minItems": 2
+        }
+      }
+    },
     "expanderPin": {
       "type": "object",
       "description": "A single pin exposed by a GPIO/peripheral expander.",
@@ -94,6 +125,12 @@
         "type": "string"
       }
     },
+    "settings": {
+      "description": "Configurable device-level settings (e.g. gain, sample rate, integration time). Each key is the machine-readable name sent to firmware.",
+      "type": "object",
+      "propertyNames": { "pattern": "^[a-z][a-z0-9_]*$" },
+      "additionalProperties": { "$ref": "#/$defs/setting" }
+    },
     "pins": {
       "description": "List of pins exposed by this expander.",
       "type": "array",
diff --git a/components/i2c/apds9999/definition.json b/components/i2c/apds9999/definition.json
index a2cb5462..2b19ca4c 100644
--- a/components/i2c/apds9999/definition.json
+++ b/components/i2c/apds9999/definition.json
@@ -5,5 +5,51 @@
   "documentationURL": "https://learn.adafruit.com/adafruit-apds9999-proximity-lux-light-color-sensor",
   "published": true,
   "i2cAddresses": ["0x52"],
+  "settings": {
+    "light_gain": {
+      "displayName": "Light Gain",
+      "description": "ALS gain.",
+      "default": 0,
+      "options": ["1x", "3x", "6x", "9x", "18x"]
+    },
+    "light_resolution": {
+      "displayName": "Light Resolution",
+      "default": 0,
+      "options": [
+        "20-bit (400ms)",
+        "19-bit (200ms)",
+        "18-bit (100ms)",
+        "17-bit (50ms)",
+        "16-bit (25ms)",
+        "13-bit (3.125ms)"
+      ]
+    },
+    "light_meas_rate": {
+      "displayName": "Light Measurement Rate",
+      "default": 2,
+      "options": ["25ms", "50ms", "100ms", "200ms", "500ms", "1000ms", "2000ms"]
+    },
+    "prox_resolution": {
+      "displayName": "Proximity Resolution",
+      "default": 0,
+      "options": ["8-bit", "9-bit", "10-bit", "11-bit"]
+    },
+    "prox_meas_rate": {
+      "displayName": "Proximity Measurement Rate",
+      "description": "Actual measurement period is approximately 3x the programmed value.",
+      "default": 4,
+      "options": ["6.25ms", "12.5ms", "25ms", "50ms", "100ms", "200ms", "400ms"]
+    },
+    "led_current": {
+      "displayName": "LED Current",
+      "default": 0,
+      "options": ["10mA", "25mA"]
+    },
+    "led_frequency": {
+      "displayName": "LED Frequency",
+      "default": 0,
+      "options": ["60 kHz", "70 kHz", "80 kHz", "90 kHz", "100 kHz"]
+    }
+  },
   "subcomponents": ["light", "proximity"]
 }
diff --git a/components/i2c/bme280/definition.json b/components/i2c/bme280/definition.json
index 2c8e6d68..fcd7b1d3 100644
--- a/components/i2c/bme280/definition.json
+++ b/components/i2c/bme280/definition.json
@@ -4,6 +4,23 @@
   "productURL": "https://www.adafruit.com/product/2652",
   "documentationURL": "https://learn.adafruit.com/adafruit-bme280-humidity-barometric-pressure-temperature-sensor-breakout",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "humidity", "pressure", "altitude" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "humidity_oversampling": {
+      "displayName": "Humidity Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "humidity", "pressure", "altitude"]
 }
diff --git a/components/i2c/bme680/definition.json b/components/i2c/bme680/definition.json
index 244d33af..7712a24c 100644
--- a/components/i2c/bme680/definition.json
+++ b/components/i2c/bme680/definition.json
@@ -4,6 +4,35 @@
   "productURL": "https://www.adafruit.com/product/3660",
   "documentationURL": "https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "humidity", "pressure", "altitude", "gas-resistance" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "humidity_oversampling": {
+      "displayName": "Humidity Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": ["Off", "Size 1", "Size 3", "Size 7", "Size 15", "Size 31", "Size 63", "Size 127"]
+    }
+  },
+  "subcomponents": [
+    "ambient-temp",
+    "ambient-temp-fahrenheit",
+    "humidity",
+    "pressure",
+    "altitude",
+    "gas-resistance"
+  ]
 }
diff --git a/components/i2c/bme688/definition.json b/components/i2c/bme688/definition.json
index 7c290dc9..360a7b58 100644
--- a/components/i2c/bme688/definition.json
+++ b/components/i2c/bme688/definition.json
@@ -4,6 +4,35 @@
   "productURL": "https://www.adafruit.com/product/5046",
   "documentationURL": "https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "humidity", "pressure", "altitude", "gas-resistance" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "humidity_oversampling": {
+      "displayName": "Humidity Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": ["Off", "Size 1", "Size 3", "Size 7", "Size 15", "Size 31", "Size 63", "Size 127"]
+    }
+  },
+  "subcomponents": [
+    "ambient-temp",
+    "ambient-temp-fahrenheit",
+    "humidity",
+    "pressure",
+    "altitude",
+    "gas-resistance"
+  ]
 }
diff --git a/components/i2c/bmp280/definition.json b/components/i2c/bmp280/definition.json
index 0f54ecb2..0b65a400 100644
--- a/components/i2c/bmp280/definition.json
+++ b/components/i2c/bmp280/definition.json
@@ -4,6 +4,34 @@
   "productURL": "https://www.adafruit.com/product/2651",
   "documentationURL": "https://learn.adafruit.com/adafruit-bmp280-barometric-pressure-plus-temperature-sensor-breakout",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the measurement mode of the sensor.",
+      "default": 2,
+      "options": ["Sleep", "Forced", "Normal"]
+    },
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "1x", "2x", "4x", "8x", "16x"]
+    },
+    "filter": {
+      "displayName": "Filter",
+      "default": 0,
+      "options": ["Off", "2x", "4x", "8x", "16x"]
+    },
+    "standby": {
+      "displayName": "Standby Duration",
+      "default": 0,
+      "options": ["1ms", "62.5ms", "125ms", "250ms", "500ms", "1000ms", "2000ms", "4000ms"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/bmp388/definition.json b/components/i2c/bmp388/definition.json
index 6ced421c..cb000eb0 100644
--- a/components/i2c/bmp388/definition.json
+++ b/components/i2c/bmp388/definition.json
@@ -4,6 +4,47 @@
   "productURL": "https://www.adafruit.com/product/3966",
   "documentationURL": "https://learn.adafruit.com/adafruit-bmp388-bmp390-bmp3xx",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "2x", "4x", "8x", "16x", "32x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "2x", "4x", "8x", "16x", "32x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": [
+        "Off",
+        "Coeff 1",
+        "Coeff 3",
+        "Coeff 7",
+        "Coeff 15",
+        "Coeff 31",
+        "Coeff 63",
+        "Coeff 127"
+      ]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": [
+        "50 Hz",
+        "25 Hz",
+        "12.5 Hz",
+        "6.25 Hz",
+        "3.1 Hz",
+        "1.5 Hz",
+        "0.78 Hz",
+        "0.39 Hz",
+        "0.2 Hz"
+      ]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/bmp390/definition.json b/components/i2c/bmp390/definition.json
index cb32a30b..2a9a38eb 100644
--- a/components/i2c/bmp390/definition.json
+++ b/components/i2c/bmp390/definition.json
@@ -4,6 +4,47 @@
   "productURL": "https://www.adafruit.com/product/4816",
   "documentationURL": "https://learn.adafruit.com/adafruit-bmp388-bmp390-bmp3xx",
   "published": true,
-  "i2cAddresses": [ "0x77", "0x76" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x77", "0x76"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["None", "2x", "4x", "8x", "16x", "32x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["None", "2x", "4x", "8x", "16x", "32x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": [
+        "Off",
+        "Coeff 1",
+        "Coeff 3",
+        "Coeff 7",
+        "Coeff 15",
+        "Coeff 31",
+        "Coeff 63",
+        "Coeff 127"
+      ]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": [
+        "50 Hz",
+        "25 Hz",
+        "12.5 Hz",
+        "6.25 Hz",
+        "3.1 Hz",
+        "1.5 Hz",
+        "0.78 Hz",
+        "0.39 Hz",
+        "0.2 Hz"
+      ]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/bmp580/definition.json b/components/i2c/bmp580/definition.json
index 78cd2887..d810172f 100644
--- a/components/i2c/bmp580/definition.json
+++ b/components/i2c/bmp580/definition.json
@@ -4,6 +4,60 @@
   "productURL": "https://www.adafruit.com/product/6411",
   "documentationURL": "https://cdn-shop.adafruit.com/product-files/6411/BMP580.pdf",
   "published": true,
-  "i2cAddresses": [ "0x47", "0x46" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x47", "0x46"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": [
+        "Bypass",
+        "Coeff 1",
+        "Coeff 3",
+        "Coeff 7",
+        "Coeff 15",
+        "Coeff 31",
+        "Coeff 63",
+        "Coeff 127"
+      ]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": [
+        "50 Hz",
+        "45 Hz",
+        "40 Hz",
+        "35 Hz",
+        "30 Hz",
+        "25 Hz",
+        "20 Hz",
+        "15 Hz",
+        "10 Hz",
+        "5 Hz",
+        "4 Hz",
+        "3 Hz",
+        "2 Hz",
+        "1 Hz",
+        "0.5 Hz",
+        "0.25 Hz",
+        "0.125 Hz"
+      ]
+    },
+    "power_mode": {
+      "displayName": "Power Mode",
+      "default": 1,
+      "options": ["Standby", "Normal", "Forced", "Continuous", "Deep Standby"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/bmp581/definition.json b/components/i2c/bmp581/definition.json
index d08672c9..869e336a 100644
--- a/components/i2c/bmp581/definition.json
+++ b/components/i2c/bmp581/definition.json
@@ -4,6 +4,60 @@
   "productURL": "https://www.adafruit.com/product/6407",
   "documentationURL": "https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp581-ds004.pdf",
   "published": true,
-  "i2cAddresses": [ "0x47", "0x46" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x47", "0x46"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": [
+        "Bypass",
+        "Coeff 1",
+        "Coeff 3",
+        "Coeff 7",
+        "Coeff 15",
+        "Coeff 31",
+        "Coeff 63",
+        "Coeff 127"
+      ]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": [
+        "50 Hz",
+        "45 Hz",
+        "40 Hz",
+        "35 Hz",
+        "30 Hz",
+        "25 Hz",
+        "20 Hz",
+        "15 Hz",
+        "10 Hz",
+        "5 Hz",
+        "4 Hz",
+        "3 Hz",
+        "2 Hz",
+        "1 Hz",
+        "0.5 Hz",
+        "0.25 Hz",
+        "0.125 Hz"
+      ]
+    },
+    "power_mode": {
+      "displayName": "Power Mode",
+      "default": 1,
+      "options": ["Standby", "Normal", "Forced", "Continuous", "Deep Standby"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/bmp585/definition.json b/components/i2c/bmp585/definition.json
index d4233cf8..f4b0010e 100644
--- a/components/i2c/bmp585/definition.json
+++ b/components/i2c/bmp585/definition.json
@@ -4,6 +4,60 @@
   "productURL": "https://www.adafruit.com/product/6413",
   "documentationURL": "https://cdn-shop.adafruit.com/product-files/6413/bst-bmp585-ds003.pdf",
   "published": true,
-  "i2cAddresses": [ "0x47", "0x46" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude" ]
+  "i2cAddresses": ["0x47", "0x46"],
+  "settings": {
+    "temp_oversampling": {
+      "displayName": "Temperature Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "pressure_oversampling": {
+      "displayName": "Pressure Oversampling",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "16x", "32x", "64x", "128x"]
+    },
+    "iir_filter": {
+      "displayName": "IIR Filter",
+      "default": 0,
+      "options": [
+        "Bypass",
+        "Coeff 1",
+        "Coeff 3",
+        "Coeff 7",
+        "Coeff 15",
+        "Coeff 31",
+        "Coeff 63",
+        "Coeff 127"
+      ]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": [
+        "50 Hz",
+        "45 Hz",
+        "40 Hz",
+        "35 Hz",
+        "30 Hz",
+        "25 Hz",
+        "20 Hz",
+        "15 Hz",
+        "10 Hz",
+        "5 Hz",
+        "4 Hz",
+        "3 Hz",
+        "2 Hz",
+        "1 Hz",
+        "0.5 Hz",
+        "0.25 Hz",
+        "0.125 Hz"
+      ]
+    },
+    "power_mode": {
+      "displayName": "Power Mode",
+      "default": 1,
+      "options": ["Standby", "Normal", "Forced", "Continuous", "Deep Standby"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit", "pressure", "altitude"]
 }
diff --git a/components/i2c/ens160/definition.json b/components/i2c/ens160/definition.json
index 7fd27f79..92253a76 100644
--- a/components/i2c/ens160/definition.json
+++ b/components/i2c/ens160/definition.json
@@ -4,13 +4,18 @@
   "productURL": "https://www.adafruit.com/product/5606",
   "documentationURL": "https://learn.adafruit.com/adafruit-ens160-mox-gas-sensor",
   "published": true,
-  "i2cAddresses": [ "0x52", "0x53" ],
-  "subcomponents": [ 
+  "i2cAddresses": ["0x52", "0x53"],
+  "settings": {
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the operating mode of the sensor.",
+      "default": 2,
+      "options": ["Deep Sleep", "Idle", "Standard", "Low Power"]
+    }
+  },
+  "subcomponents": [
     "tvoc",
     "eco2",
-    {
-      "displayName": "AQI",
-      "sensorType": "raw"
-    }
+    {"displayName": "AQI", "sensorType": "raw"}
   ]
 }
diff --git a/components/i2c/ina219/definition.json b/components/i2c/ina219/definition.json
index 0bb00279..b4c87316 100644
--- a/components/i2c/ina219/definition.json
+++ b/components/i2c/ina219/definition.json
@@ -4,6 +4,14 @@
   "productURL": "https://www.adafruit.com/product/904",
   "documentationURL": "https://learn.adafruit.com/adafruit-ina219-current-sensor-breakout",
   "published": true,
-  "i2cAddresses": [ "0x40", "0x41", "0x44", "0x45" ],
-  "subcomponents": [ "voltage", "current" ]
-}
\ No newline at end of file
+  "i2cAddresses": ["0x40", "0x41", "0x44", "0x45"],
+  "settings": {
+    "calibration": {
+      "displayName": "Calibration",
+      "description": "Sets the voltage range and max current measurement.",
+      "default": 0,
+      "options": ["32V, 2A", "32V, 1A", "16V, 400mA"]
+    }
+  },
+  "subcomponents": ["voltage", "current"]
+}
diff --git a/components/i2c/ltr303/definition.json b/components/i2c/ltr303/definition.json
index a29fed70..d2e74988 100644
--- a/components/i2c/ltr303/definition.json
+++ b/components/i2c/ltr303/definition.json
@@ -4,16 +4,28 @@
   "productURL": "https://www.adafruit.com/product/5610",
   "documentationURL": "https://learn.adafruit.com/adafruit-ltr-329-ltr-303",
   "published": true,
-  "i2cAddresses": [ "0x29" ],
-  "subcomponents": [
-    {
-      "displayName": "Ambient Light",
-      "sensorType": "light"
+  "i2cAddresses": ["0x29"],
+  "settings": {
+    "gain": {
+      "displayName": "Gain",
+      "description": "ALS gain.",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "48x", "96x"]
+    },
+    "integration_time": {
+      "displayName": "Integration Time",
+      "description": "ALS integration time.",
+      "default": 1,
+      "options": ["50ms", "100ms", "150ms", "200ms", "250ms", "300ms", "350ms", "400ms"]
     },
-    {
-      "displayName": "Infrared",
-      "sensorType": "raw"
+    "measurement_rate": {
+      "displayName": "Measurement Rate",
+      "default": 0,
+      "options": ["50ms", "100ms", "200ms", "500ms", "1000ms", "2000ms"]
     }
+  },
+  "subcomponents": [
+    {"displayName": "Ambient Light", "sensorType": "light"},
+    {"displayName": "Infrared", "sensorType": "raw"}
   ]
 }
-
diff --git a/components/i2c/ltr329/definition.json b/components/i2c/ltr329/definition.json
index 54996024..770312b5 100644
--- a/components/i2c/ltr329/definition.json
+++ b/components/i2c/ltr329/definition.json
@@ -4,15 +4,28 @@
   "documentationURL": "https://learn.adafruit.com/adafruit-ltr-329-ltr-303",
   "displayName": "LTR-329",
   "published": true,
-  "i2cAddresses": [ "0x29" ],
-  "subcomponents": [
-    {
-      "displayName": "Ambient Light",
-      "sensorType": "light"
+  "i2cAddresses": ["0x29"],
+  "settings": {
+    "gain": {
+      "displayName": "Gain",
+      "description": "ALS gain.",
+      "default": 0,
+      "options": ["1x", "2x", "4x", "8x", "48x", "96x"]
+    },
+    "integration_time": {
+      "displayName": "Integration Time",
+      "description": "ALS integration time.",
+      "default": 1,
+      "options": ["50ms", "100ms", "150ms", "200ms", "250ms", "300ms", "350ms", "400ms"]
     },
-    {
-      "displayName": "Infrared",
-      "sensorType": "raw"
+    "measurement_rate": {
+      "displayName": "Measurement Rate",
+      "default": 0,
+      "options": ["50ms", "100ms", "200ms", "500ms", "1000ms", "2000ms"]
     }
+  },
+  "subcomponents": [
+    {"displayName": "Ambient Light", "sensorType": "light"},
+    {"displayName": "Infrared", "sensorType": "raw"}
   ]
 }
diff --git a/components/i2c/max44009/definition.json b/components/i2c/max44009/definition.json
index dc3560ef..4c2ed5a3 100644
--- a/components/i2c/max44009/definition.json
+++ b/components/i2c/max44009/definition.json
@@ -6,5 +6,24 @@
   "description": "Ambient light sensor with ultra-wide 22bit dynamic range (0.045 to 188,000 lux)",
   "published": true,
   "i2cAddresses": ["0x4A", "0x4B"],
+  "settings": {
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the operating mode of the sensor.",
+      "default": 0,
+      "options": [
+        "Default (Auto, 800ms cycle)",
+        "Continuous (Auto, fast)",
+        "Manual (800ms cycle)",
+        "Manual Continuous (fast)"
+      ]
+    },
+    "integration_time": {
+      "displayName": "Integration Time",
+      "description": "ALS integration time. Shorter times (50ms and below) require manual mode.",
+      "default": 3,
+      "options": ["800ms", "400ms", "200ms", "100ms", "50ms", "25ms", "12.5ms", "6.25ms"]
+    }
+  },
   "subcomponents": ["lux"]
 }
diff --git a/components/i2c/mcp9601/definition.json b/components/i2c/mcp9601/definition.json
index 29b3144b..12cc60c3 100644
--- a/components/i2c/mcp9601/definition.json
+++ b/components/i2c/mcp9601/definition.json
@@ -1,26 +1,35 @@
-{
-  "displayName": "MCP9601",
-  "vendor": "Microchip",
-  "productURL": "https://www.adafruit.com/product/5165",
-  "documentationURL": "https://learn.adafruit.com/adafruit-mcp9601",
-  "description": "Thermocouple / ambient temperature sensor. *Note* Needs hotplugging after i2c scans + selecting component!",
-  "published": false,
-  "i2cAddresses": [ "0x67", "0x66", "0x65", "0x64", "0x63", "0x62", "0x61", "0x60"],
-  "subcomponents": [ 
-    {
-      "displayName": "Ambient Temperature (°C)",
-      "sensorType": "ambient-temp",
-      "defaultPeriod": 30
-    },
-    {
-      "displayName": "Ambient Temperature (°F)",
-      "sensorType": "ambient-temp-fahrenheit",
-      "defaultPeriod": 30
-    },
-    {
-      "displayName": "Type K Thermocouple (°C)",
-      "sensorType": "raw",
-      "defaultPeriod": 30
-    }
-  ]
-}
+{
+  "displayName": "MCP9601",
+  "vendor": "Microchip",
+  "productURL": "https://www.adafruit.com/product/5165",
+  "documentationURL": "https://learn.adafruit.com/adafruit-mcp9601",
+  "description": "Thermocouple / ambient temperature sensor. *Note* Needs hotplugging after i2c scans + selecting component!",
+  "published": false,
+  "i2cAddresses": ["0x67", "0x66", "0x65", "0x64", "0x63", "0x62", "0x61", "0x60"],
+  "settings": {
+    "thermocouple_type": {
+      "displayName": "Thermocouple Type",
+      "default": 0,
+      "options": ["Type K", "Type J", "Type T", "Type N", "Type S", "Type E", "Type B", "Type R"]
+    },
+    "adc_resolution": {
+      "displayName": "ADC Resolution",
+      "default": 0,
+      "options": ["18-bit", "16-bit", "14-bit", "12-bit"]
+    },
+    "ambient_resolution": {
+      "displayName": "Ambient Resolution",
+      "default": 0,
+      "options": ["0.25°C", "0.125°C", "0.0625°C", "0.03125°C"]
+    }
+  },
+  "subcomponents": [
+    {"displayName": "Ambient Temperature (°C)", "sensorType": "ambient-temp", "defaultPeriod": 30},
+    {
+      "displayName": "Ambient Temperature (°F)",
+      "sensorType": "ambient-temp-fahrenheit",
+      "defaultPeriod": 30
+    },
+    {"displayName": "Type K Thermocouple (°C)", "sensorType": "raw", "defaultPeriod": 30}
+  ]
+}
diff --git a/components/i2c/qmc5883p/definition.json b/components/i2c/qmc5883p/definition.json
index eecc71cc..c522ea54 100644
--- a/components/i2c/qmc5883p/definition.json
+++ b/components/i2c/qmc5883p/definition.json
@@ -4,11 +4,36 @@
   "productURL": "https://www.adafruit.com/product/6388",
   "documentationURL": "https://learn.adafruit.com/adafruit-qmc5883p-triple-axis-magnetometer",
   "published": true,
-  "i2cAddresses": [ "0x2C" ],
-  "subcomponents": [
-    {
-      "displayName": "Magnetic Magnitude (gauss)",
-      "sensorType": "raw"
+  "i2cAddresses": ["0x2C"],
+  "settings": {
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the operating mode of the sensor.",
+      "default": 3,
+      "options": ["Suspend", "Normal", "Single", "Continuous"]
+    },
+    "output_data_rate": {
+      "displayName": "Output Data Rate",
+      "default": 0,
+      "options": ["10 Hz", "50 Hz", "100 Hz", "200 Hz"]
+    },
+    "oversample_ratio": {
+      "displayName": "Over Sample Ratio",
+      "default": 0,
+      "options": ["8", "4", "2", "1"]
+    },
+    "downsample_ratio": {
+      "displayName": "Down Sample Ratio",
+      "default": 0,
+      "options": ["1", "2", "4", "8"]
+    },
+    "range": {
+      "displayName": "Field Range",
+      "default": 0,
+      "options": ["±30 Gauss", "±12 Gauss", "±8 Gauss", "±2 Gauss"]
     }
+  },
+  "subcomponents": [
+    {"displayName": "Magnetic Magnitude (gauss)", "sensorType": "raw"}
   ]
 }
diff --git a/components/i2c/schema.json b/components/i2c/schema.json
index dc75ca35..95a2e6e5 100644
--- a/components/i2c/schema.json
+++ b/components/i2c/schema.json
@@ -3,6 +3,37 @@
   "description": "An I2C-based WipperSnapper component for use in Adafruit IO",
   "type": "object",
   "$defs": {
+    "setting": {
+      "type": "object",
+      "description": "A configurable device setting. Firmware receives the selected option's 0-based index.",
+      "required": ["displayName", "options"],
+      "additionalProperties": false,
+      "properties": {
+        "displayName": {
+          "description": "Human-readable label shown in the UI.",
+          "type": "string",
+          "minLength": 1,
+          "maxLength": 30
+        },
+        "description": {
+          "description": "Optional helper text explaining what this setting controls.",
+          "type": "string",
+          "minLength": 1,
+          "maxLength": 255
+        },
+        "default": {
+          "description": "Index of the default option (0-based). Defaults to 0 if omitted.",
+          "type": "integer",
+          "minimum": 0
+        },
+        "options": {
+          "description": "Ordered list of option labels. The selected index is sent to firmware.",
+          "type": "array",
+          "items": { "type": "string" },
+          "minItems": 2
+        }
+      }
+    },
     "subcomponent": {
       "type": ["string", "object"],
       "pattern": "^(unspecified|accelerometer|magnetic-field|orientation|gyroscope|light|pressure|proximity|gravity|acceleration|rotation|humidity|ambient-temp|object-temp|voltage|current|color|raw|pm10-std|pm25-std|pm100-std|pm10-env|pm25-env|pm100-env|co2|gas-resistance|altitude|lux|eco2|unitless-percent|ambient-temp-fahrenheit|object-temp-fahrenheit|voc-index|nox-index|tvoc)$",
@@ -77,6 +108,12 @@
         "type": "string"
       }
     },
+    "settings": {
+      "description": "Configurable device-level settings (e.g. gain, sample rate, integration time). Each key is the machine-readable name sent to firmware.",
+      "type": "object",
+      "propertyNames": { "pattern": "^[a-z][a-z0-9_]*$" },
+      "additionalProperties": { "$ref": "#/$defs/setting" }
+    },
     "subcomponents": {
       "description": "List of sensors on this I2C component.",
       "type": "array",
diff --git a/components/i2c/sen50/definition.json b/components/i2c/sen50/definition.json
index 3b3163a8..0acdfbc4 100644
--- a/components/i2c/sen50/definition.json
+++ b/components/i2c/sen50/definition.json
@@ -1,15 +1,9 @@
-{
-  "displayName": "SEN50",
-  "vendor": "Sensirion",
-  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
-  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
-  "published": true,
-  "i2cAddresses": [
-    "0x69"
-  ],
-  "subcomponents": [
-    "pm10-std",
-    "pm25-std",
-    "pm100-std"
-  ]
+{
+  "displayName": "SEN50",
+  "vendor": "Sensirion",
+  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
+  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
+  "published": true,
+  "i2cAddresses": ["0x69"],
+  "subcomponents": ["pm10-std", "pm25-std", "pm100-std"]
 }
\ No newline at end of file
diff --git a/components/i2c/sen54/definition.json b/components/i2c/sen54/definition.json
index b36780c2..ff041cc5 100644
--- a/components/i2c/sen54/definition.json
+++ b/components/i2c/sen54/definition.json
@@ -1,19 +1,17 @@
-{
-  "displayName": "SEN54",
-  "vendor": "Sensirion",
-  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
-  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
-  "published": true,
-  "i2cAddresses": [
-    "0x69"
-  ],
-  "subcomponents": [
-    "ambient-temp",
-    "ambient-temp-fahrenheit",
-    "humidity",
-    "pm10-std",
-    "pm25-std",
-    "pm100-std",
-    "voc-index"
-  ]
+{
+  "displayName": "SEN54",
+  "vendor": "Sensirion",
+  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
+  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
+  "published": true,
+  "i2cAddresses": ["0x69"],
+  "subcomponents": [
+    "ambient-temp",
+    "ambient-temp-fahrenheit",
+    "humidity",
+    "pm10-std",
+    "pm25-std",
+    "pm100-std",
+    "voc-index"
+  ]
 }
\ No newline at end of file
diff --git a/components/i2c/sen55/definition.json b/components/i2c/sen55/definition.json
index f0a6bee3..4b66cce0 100644
--- a/components/i2c/sen55/definition.json
+++ b/components/i2c/sen55/definition.json
@@ -1,20 +1,18 @@
-{
-  "displayName": "SEN55",
-  "vendor": "Sensirion",
-  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
-  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
-  "published": true,
-  "i2cAddresses": [
-    "0x69"
-  ],
-  "subcomponents": [
-    "ambient-temp",
-    "ambient-temp-fahrenheit",
-    "humidity",
-    "pm10-std",
-    "pm25-std",
-    "pm100-std",
-    "voc-index",
-    "nox-index"
-  ]
+{
+  "displayName": "SEN55",
+  "vendor": "Sensirion",
+  "productURL": "https://www.digikey.com/en/products/filter/gas-sensors/530?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAPZQDa4ADFRQgLoC%2BjQA",
+  "documentationURL": "https://sensirion.com/media/documents/6791EFA0/62A1F68F/Sensirion_Datasheet_Environmental_Node_SEN5x.pdf",
+  "published": true,
+  "i2cAddresses": ["0x69"],
+  "subcomponents": [
+    "ambient-temp",
+    "ambient-temp-fahrenheit",
+    "humidity",
+    "pm10-std",
+    "pm25-std",
+    "pm100-std",
+    "voc-index",
+    "nox-index"
+  ]
 }
\ No newline at end of file
diff --git a/components/i2c/sen66/definition.json b/components/i2c/sen66/definition.json
index 6052f29d..5ae0153c 100644
--- a/components/i2c/sen66/definition.json
+++ b/components/i2c/sen66/definition.json
@@ -4,9 +4,7 @@
   "productURL": "https://www.adafruit.com/product/6331",
   "documentationURL": "https://sensirion.com/media/documents/FAFC548D/6731FFFA/Sensirion_Datasheet_SEN6x.pdf",
   "published": true,
-  "i2cAddresses": [
-    "0x6B"
-  ],
+  "i2cAddresses": ["0x6B"],
   "subcomponents": [
     "ambient-temp",
     "ambient-temp-fahrenheit",
diff --git a/components/i2c/tmp117/definition.json b/components/i2c/tmp117/definition.json
index 81271d02..4c972960 100644
--- a/components/i2c/tmp117/definition.json
+++ b/components/i2c/tmp117/definition.json
@@ -4,6 +4,25 @@
   "productURL": "https://www.adafruit.com/product/4821",
   "documentationURL": "https://learn.adafruit.com/adafruit-tmp117-high-accuracy-i2c-temperature-monitor",
   "published": true,
-  "i2cAddresses": [ "0x48", "0x49", "0x4A", "0x4B" ],
-  "subcomponents": [ "ambient-temp", "ambient-temp-fahrenheit" ]
+  "i2cAddresses": ["0x48", "0x49", "0x4A", "0x4B"],
+  "settings": {
+    "averaged_samples": {
+      "displayName": "Averaged Samples",
+      "default": 0,
+      "options": ["1x", "8x", "32x", "64x"]
+    },
+    "read_delay": {
+      "displayName": "Read Delay",
+      "description": "The minimum delay between new measurements.",
+      "default": 0,
+      "options": ["0ms", "125ms", "250ms", "500ms", "1000ms", "4000ms", "8000ms", "16000ms"]
+    },
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the measurement mode of the sensor.",
+      "default": 0,
+      "options": ["Continuous", "Shutdown", "One Shot"]
+    }
+  },
+  "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit"]
 }
diff --git a/components/i2c/tmp119/definition.json b/components/i2c/tmp119/definition.json
index 4dadab6a..251745a8 100644
--- a/components/i2c/tmp119/definition.json
+++ b/components/i2c/tmp119/definition.json
@@ -5,5 +5,24 @@
   "documentationURL": "https://learn.adafruit.com/adafruit-tmp119-high-precision-temperature-sensor",
   "published": true,
   "i2cAddresses": ["0x48", "0x49", "0x4A", "0x4B"],
+  "settings": {
+    "averaged_samples": {
+      "displayName": "Averaged Samples",
+      "default": 0,
+      "options": ["1x", "8x", "32x", "64x"]
+    },
+    "read_delay": {
+      "displayName": "Read Delay",
+      "description": "The minimum delay between new measurements.",
+      "default": 0,
+      "options": ["0ms", "125ms", "250ms", "500ms", "1000ms", "4000ms", "8000ms", "16000ms"]
+    },
+    "mode": {
+      "displayName": "Mode",
+      "description": "Sets the measurement mode of the sensor.",
+      "default": 0,
+      "options": ["Continuous", "Shutdown", "One Shot"]
+    }
+  },
   "subcomponents": ["ambient-temp", "ambient-temp-fahrenheit"]
 }
diff --git a/components/i2c/veml7700/definition.json b/components/i2c/veml7700/definition.json
index 541563e2..a663eb91 100644
--- a/components/i2c/veml7700/definition.json
+++ b/components/i2c/veml7700/definition.json
@@ -4,6 +4,20 @@
   "productURL": "https://www.adafruit.com/product/4162",
   "documentationURL": "https://learn.adafruit.com/adafruit-veml7700",
   "published": true,
-  "i2cAddresses": [ "0x10" ],
-  "subcomponents": [ "light" ]
+  "i2cAddresses": ["0x10"],
+  "settings": {
+    "gain": {
+      "displayName": "Gain",
+      "description": "ALS gain.",
+      "default": 0,
+      "options": ["1x", "2x", "1/8x", "1/4x"]
+    },
+    "integration_time": {
+      "displayName": "Integration Time",
+      "description": "ALS integration time.",
+      "default": 2,
+      "options": ["25ms", "50ms", "100ms", "200ms", "400ms", "800ms"]
+    }
+  },
+  "subcomponents": ["light"]
 }