diff --git a/Firmware-Compatibility.md b/Firmware-Compatibility.md
new file mode 100644
index 0000000..fe617e5
--- /dev/null
+++ b/Firmware-Compatibility.md
@@ -0,0 +1,46 @@
+## Mainboard
+This firmware is only compatible with Single Mainboards, for split boards, check following [Firmware](https://github.com/flo199213/Hoverboard-Firmware-Hack-Gen2)
+
+## Chip
+This firmware is compatible with STM32F103RCT6 and GD32F103RCT6.
+For AT32F403RCT6 or AT32F403RCT7 chips please check following [Firmware](https://github.com/cloidnerux/hoverboard-firmware-hack) 
+
+## Pin Mapping
+|Port|Pin|
+|---|---|
+|SWCLK|PA14|
+|SWDIO|PA13|
+|TX/ADC1|PA2|
+|RX/ADC2/PPM|PA3|
+|TX/SCL|PB10|
+|RX/SDA|PB11|
+|LED|PB2|
+|BUZZER|PA4|
+|HALL LEFT U|PB5|
+|HALL LEFT V|PB6|
+|HALL LEFT W|PB7|
+|HALL RIGHT U|PC10|
+|HALL RIGHT V|PC11|
+|HALL RIGHT W|PC12|
+|LEFT UH|PC6|
+|LEFT UL|PA7|
+|LEFT VH|PC7|
+|LEFT VL|PB0|
+|LEFT WH|PC8|
+|LEFT WL|PB1|
+|RIGHT UH|PA8|
+|RIGHT UL|PB13|
+|RIGHT VH|PA9|
+|RIGHT VL|PB14|
+|RIGHT WH|PA10|
+|RIGHT WL|PB15|
+|LEFT_DC_CUR|PC0|
+|LEFT_U_CUR|PA0|
+|LEFT_V_CUR|PC3|
+|RIGHT_DC_CUR|PC1|
+|RIGHT_U_CUR|PC4|
+|RIGHT_V_CUR|PC5|
+|DCLINK|PC2|
+|OFF|PA5|
+|BUTTON|PA1|
+|CHARGER|PA12|