diff --git a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/KakuteF4.jpg b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/KakuteF4.jpg
deleted file mode 100644
index 6c2c677207..0000000000
Binary files a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/KakuteF4.jpg and /dev/null differ
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/README.md b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/README.md
index 9d1da6ec45..c7e70bf10b 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/README.md
+++ b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/README.md
@@ -13,10 +13,17 @@ The [KakuteF4 AIO](http://www.holybro.com/product/47) is a flight controller pro
 
 ## Pinout
 
-![KakuteF4 Board](KakuteF4.jpg "KakuteF4")
+![KakuteF4 Top](kakutef4_top.jpg "KakuteF4Top")
+![KakuteF4 Bot](kakutef4_bot.jpg "KakuteF4Bot")
 
 ## UART Mapping
 
+The UARTs are marked Rn and Tn in the above pinouts. The Rn pin is the
+receive pin for UARTn. The Tn pin is the transmit pin for UARTn.
+
+The pin labelled Rx on each corner of the board is a common pin for
+ESC telemetry input.
+
  - SERIAL0 -> USB
  - SERIAL1 -> UART6 (Telem1)
  - SERIAL2 -> UART1 (FrSky S.Port)
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_bot.jpg b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_bot.jpg
new file mode 100644
index 0000000000..56217db90e
Binary files /dev/null and b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_bot.jpg differ
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_top.jpg b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_top.jpg
new file mode 100644
index 0000000000..19d6357cd8
Binary files /dev/null and b/libraries/AP_HAL_ChibiOS/hwdef/KakuteF4/kakutef4_top.jpg differ