diff --git a/solo/wio-tracker-l1-gdeq0426/platformio.ini b/solo/wio-tracker-l1-gdeq0426/platformio.ini
new file mode 100644
index 00000000..3691e66f
--- /dev/null
+++ b/solo/wio-tracker-l1-gdeq0426/platformio.ini
@@ -0,0 +1,60 @@
+; Solo build for Seeed Wio Tracker L1 (Lite) + Good Display GDEQ0426T82
+; 4.26" 800x480 e-ink, plugged into the board's 24-pin e-ink FPC connector.
+; Build config only -- no source changes. Extends WioTrackerL1Eink
+; (variants/wio-tracker-l1-eink/platformio.ini) for its source files and
+; libraries, but carries its own full build_flags list, so the stock panel's
+; -D EINK_DISPLAY_MODEL / DISPLAY_ROTATION never reach the compiler too.
+;
+;  - EINK_DISPLAY_MODEL  GxEPD2 driver for this panel (GxEPD2 1.6.2+)
+;  - DISPLAY_ROTATION    0: the panel's native landscape
+;  - RAM: the 800x480 framebuffer is 48 KB (the stock 2.13" needs ~4 KB),
+;    and UiCore plus every screen is allocated from the heap at startup --
+;    a failed allocation there crashes into a boot loop. So:
+;      OFFLINE_QUEUE_SIZE  32  (stock e-ink: 128)  frees ~17 KB
+;      MAX_CONTACTS       250  (stock: 350)        frees ~18 KB
+;
+; Build: pio run -e WioTrackerL1_GDEQ0426T82_companion_solo_dual
+[env:WioTrackerL1_GDEQ0426T82_companion_solo_dual]
+extends = WioTrackerL1Eink
+build_unflags = -Ofast
+build_flags = ${nrf52_base.build_flags}
+  ${sensor_base.build_flags}
+  -I lib/nrf52/s140_nrf52_7.3.0_API/include
+  -I lib/nrf52/s140_nrf52_7.3.0_API/include/nrf52
+  -I variants/wio-tracker-l1
+  -I examples/companion_radio/ui-new
+  -I lib/GxEPD2-patch/src
+  -D WIO_TRACKER_L1
+  -D WIO_TRACKER_L1_EINK
+  -D USE_SX1262
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D SX126X_CURRENT_LIMIT=140
+  -D SX126X_RX_BOOSTED_GAIN=1
+  -D EINK_DISPLAY_MODEL=GxEPD2_426_GDEQ0426T82
+  -D DISPLAY_ROTATION=0
+  -D JOYSTICK_UPRIGHT_ROTATION=0
+  -D GPS_BAUD_RATE=9600
+  -D ENV_PIN_SDA=PIN_WIRE1_SDA
+  -D ENV_PIN_SCL=PIN_WIRE1_SCL
+  -D DISABLE_DIAGNOSTIC_OUTPUT
+  -D AUTO_OFF_MILLIS=0
+  -D MAX_CONTACTS=250
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=32
+  -D DISPLAY_CLASS=GxEPDDisplay
+  -D BUTTON_USE_INTERRUPTS=1
+  -D UI_HAS_JOYSTICK=1
+  -D UI_HAS_JOYSTICK_UPDOWN=1
+  -D PIN_BUZZER=12
+  -D QSPIFLASH=1
+  -D FIRMWARE_SOLO_BUILD=1
+  -D MESHCORE_VERSION='"1.17.1"'
+  -D UI_SENSORS_PAGE=1
+  -D BLE_PIN_CODE=123456
+  -D DUAL_SERIAL=1
+  -D ENABLE_SCREENSHOT
+  -D KEEP_DISPLAY_ON_USB
+  -Os
+extra_scripts = post:create-uf2.py