diff --git a/crates/fbuild-config/assets/boards/json/xiaoble_adafruit.json b/crates/fbuild-config/assets/boards/json/xiaoble_adafruit.json
new file mode 100644
index 00000000..88bd7d1e
--- /dev/null
+++ b/crates/fbuild-config/assets/boards/json/xiaoble_adafruit.json
@@ -0,0 +1,31 @@
+{
+  "build": {
+    "core": "nRF5",
+    "variant": "Seeed_XIAO_nRF52840",
+    "arduino": {
+      "ldscript": "nrf52840_s140_v7.ld"
+    }
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "tools": {
+      "blackmagic": {},
+      "jlink": {},
+      "cmsis-dap": {}
+    }
+  },
+  "fcpu": 64000000,
+  "frameworks": [
+    "arduino"
+  ],
+  "id": "xiaoble_adafruit",
+  "mcu": "NRF52840",
+  "name": "Seeed XIAO BLE nRF52840",
+  "platform": "nordicnrf52",
+  "ram": 237568,
+  "rom": 811008,
+  "url": "https://wiki.seeedstudio.com/XIAO_BLE",
+  "vendor": "Seeed"
+}
diff --git a/crates/fbuild-config/assets/boards/json/xiaoblesense_adafruit.json b/crates/fbuild-config/assets/boards/json/xiaoblesense_adafruit.json
new file mode 100644
index 00000000..4f0962b8
--- /dev/null
+++ b/crates/fbuild-config/assets/boards/json/xiaoblesense_adafruit.json
@@ -0,0 +1,31 @@
+{
+  "build": {
+    "core": "nRF5",
+    "variant": "Seeed_XIAO_nRF52840_Sense",
+    "arduino": {
+      "ldscript": "nrf52840_s140_v7.ld"
+    }
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "tools": {
+      "blackmagic": {},
+      "jlink": {},
+      "cmsis-dap": {}
+    }
+  },
+  "fcpu": 64000000,
+  "frameworks": [
+    "arduino"
+  ],
+  "id": "xiaoblesense_adafruit",
+  "mcu": "NRF52840",
+  "name": "Seeed XIAO BLE Sense",
+  "platform": "nordicnrf52",
+  "ram": 237568,
+  "rom": 811008,
+  "url": "https://wiki.seeedstudio.com/XIAO_BLE",
+  "vendor": "Seeed"
+}
diff --git a/crates/fbuild-config/src/board/tests.rs b/crates/fbuild-config/src/board/tests.rs
index 77790405..8d2edbd7 100644
--- a/crates/fbuild-config/src/board/tests.rs
+++ b/crates/fbuild-config/src/board/tests.rs
@@ -494,6 +494,27 @@ fn test_nano_every_board_config() {
     assert_eq!(config.platform(), Some(fbuild_core::Platform::AtmelMegaAvr));
 }
 
+#[test]
+fn test_xiaoble_adafruit_board_config() {
+    // Seeed XIAO BLE (nRF52840, no IMU); maxgerhardt platform-nordicnrf52.
+    // Regression for FastLED `nrf52_xiaoblesense` workflow (#293).
+    let config = BoardConfig::from_board_id("xiaoble_adafruit", &HashMap::new()).unwrap();
+    assert_eq!(config.mcu, "nrf52840");
+    assert_eq!(config.core, "nRF5");
+    assert_eq!(config.variant, "Seeed_XIAO_nRF52840");
+}
+
+#[test]
+fn test_xiaoblesense_adafruit_board_config() {
+    // Seeed XIAO BLE Sense (nRF52840 + IMU/mic).
+    // Regression for FastLED `adafruit_xiaoblesense` workflow (#293).
+    let config =
+        BoardConfig::from_board_id("xiaoblesense_adafruit", &HashMap::new()).unwrap();
+    assert_eq!(config.mcu, "nrf52840");
+    assert_eq!(config.core, "nRF5");
+    assert_eq!(config.variant, "Seeed_XIAO_nRF52840_Sense");
+}
+
 /// Validate that ALL megatinycore boards have the required framework-injected
 /// defines in extra_flags. PlatformIO's builder script injects these at build
 /// time, but fbuild must carry them in the board JSON since we don't run