diff --git a/boards/ay-caramba/98-caramba.rules b/boards/ay-caramba/98-caramba.rules
new file mode 100644
index 00000000..ffb80a73
--- /dev/null
+++ b/boards/ay-caramba/98-caramba.rules
@@ -0,0 +1,4 @@
+# BTT EBB42 v1.2
+SUBSYSTEMS=="usb", ATTRS{idProduct}=="614e",  ATTRS{idVendor}=="1d50", ATTRS{serial}=="ay-caramba", ACTION=="add", SYMLINK+="ay-caramba", RUN+="/home/pi/printer_data/config/RatOS/scripts/klipper-mcu-added.sh"
+
+ACTION=="remove", ENV{DEVLINKS}=="/dev/ay-caramba"
diff --git a/boards/ay-caramba/board-definition.json b/boards/ay-caramba/board-definition.json
new file mode 100644
index 00000000..85cb650a
--- /dev/null
+++ b/boards/ay-caramba/board-definition.json
@@ -0,0 +1,46 @@
+{
+	"$schema": "../board-definition.schema.json",
+	"isToolboard": true,
+	"name": "Caramba",
+	"manufacturer": "Ay",
+	"id": "ay-caramba",
+	"firmwareBinaryName": "firmware-caramba.bin",
+	"compileScript": "compile.sh",
+	"flashScript": "flash.sh",
+	"documentationLink": "https://os.ratrig.com/docs/boards/btt/ebb42-12",
+	"fourPinFanConnectorCount": 1,
+	"disableAutoFlash": true,
+	"driverVoltages": [24],
+	"hasMcuTempSensor": true,
+	"outputPins": [
+		{
+			"name": "part_fan_power",
+			"pin": "PA10",
+			"value": 0
+		}
+	],
+	"driverCount": 1,
+	"integratedDrivers": {
+		"extruder": "LDO-TMC2209"
+	},
+	"dfu": {
+		"flashDevice": "0483:df11",
+		"dfuBootImage": "dfubooting.png",
+		"instructions": [
+			"Connect the board via USB to the Raspberry Pi",
+			"Make sure the board is powered (you can use usb power by placing a jumper on the VBUS pins)",
+			"Press and hold the BOOT button on the board.",
+			"Press and release the RESET button on the board.",
+			"Release the BOOT button."
+		],
+		"hasBoot0Jumper": false
+	},
+	"LIS2DW": {
+		"cs_pin": "PA4",
+		"software": {
+			"sclk": "PA5",
+			"mosi": "PA6",
+			"miso": "PA7"
+		}
+	}
+}
diff --git a/boards/ay-caramba/compile.sh b/boards/ay-caramba/compile.sh
new file mode 100755
index 00000000..d18ac13a
--- /dev/null
+++ b/boards/ay-caramba/compile.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+if [ "$EUID" -ne 0 ]
+  then echo "ERROR: Please run as root"
+  exit
+fi
+cp -f /home/pi/printer_data/config/RatOS/boards/ay-caramba/firmware.config /home/pi/klipper/.config
+pushd /home/pi/klipper || exit
+make olddefconfig
+make clean
+make
+
+if [ ! -d "/home/pi/printer_data/config/firmware_binaries" ]
+then
+    mkdir /home/pi/printer_data/config/firmware_binaries
+    chown pi:pi /home/pi/printer_data/config/firmware_binaries
+fi
+cp -f /home/pi/klipper/out/klipper.bin /home/pi/printer_data/config/firmware_binaries/firmware-ay-caramba.bin
+chown pi:pi /home/pi/printer_data/config/firmware_binaries/firmware-ay-caramba.bin
+popd || exit
diff --git a/boards/ay-caramba/dfubooting.png b/boards/ay-caramba/dfubooting.png
new file mode 100644
index 00000000..596905ea
Binary files /dev/null and b/boards/ay-caramba/dfubooting.png differ
diff --git a/boards/ay-caramba/firmware.config b/boards/ay-caramba/firmware.config
new file mode 100644
index 00000000..cf05266c
--- /dev/null
+++ b/boards/ay-caramba/firmware.config
@@ -0,0 +1,113 @@
+CONFIG_LOW_LEVEL_OPTIONS=y
+# CONFIG_MACH_AVR is not set
+# CONFIG_MACH_ATSAM is not set
+# CONFIG_MACH_ATSAMD is not set
+# CONFIG_MACH_LPC176X is not set
+CONFIG_MACH_STM32=y
+# CONFIG_MACH_HC32F460 is not set
+# CONFIG_MACH_RP2040 is not set
+# CONFIG_MACH_PRU is not set
+# CONFIG_MACH_AR100 is not set
+# CONFIG_MACH_LINUX is not set
+# CONFIG_MACH_SIMU is not set
+CONFIG_BOARD_DIRECTORY="stm32"
+CONFIG_MCU="stm32f042x6"
+CONFIG_CLOCK_FREQ=48000000
+CONFIG_USBSERIAL=y
+CONFIG_FLASH_SIZE=0x8000
+CONFIG_FLASH_BOOT_ADDRESS=0x8000000
+CONFIG_RAM_START=0x20000000
+CONFIG_RAM_SIZE=0x1800
+CONFIG_STACK_SIZE=512
+CONFIG_FLASH_APPLICATION_ADDRESS=0x8000000
+CONFIG_STM32_SELECT=y
+# CONFIG_MACH_STM32F103 is not set
+# CONFIG_MACH_STM32F207 is not set
+# CONFIG_MACH_STM32F401 is not set
+# CONFIG_MACH_STM32F405 is not set
+# CONFIG_MACH_STM32F407 is not set
+# CONFIG_MACH_STM32F429 is not set
+# CONFIG_MACH_STM32F446 is not set
+# CONFIG_MACH_STM32F765 is not set
+# CONFIG_MACH_STM32F031 is not set
+CONFIG_MACH_STM32F042=y
+# CONFIG_MACH_STM32F070 is not set
+# CONFIG_MACH_STM32F072 is not set
+# CONFIG_MACH_STM32G070 is not set
+# CONFIG_MACH_STM32G071 is not set
+# CONFIG_MACH_STM32G0B0 is not set
+# CONFIG_MACH_STM32G0B1 is not set
+# CONFIG_MACH_STM32G431 is not set
+# CONFIG_MACH_STM32H723 is not set
+# CONFIG_MACH_STM32H743 is not set
+# CONFIG_MACH_STM32H750 is not set
+# CONFIG_MACH_STM32L412 is not set
+# CONFIG_MACH_N32G452 is not set
+# CONFIG_MACH_N32G455 is not set
+CONFIG_MACH_STM32F0=y
+CONFIG_MACH_STM32F0x2=y
+CONFIG_HAVE_STM32_USBFS=y
+CONFIG_HAVE_STM32_CANBUS=y
+CONFIG_HAVE_STM32_USBCANBUS=y
+CONFIG_STM32_DFU_ROM_ADDRESS=0x1fffc400
+# CONFIG_STM32_FLASH_START_2000 is not set
+# CONFIG_STM32_FLASH_START_1000 is not set
+CONFIG_STM32_FLASH_START_0000=y
+CONFIG_STM32_CLOCK_REF_8M=y
+# CONFIG_STM32_CLOCK_REF_12M is not set
+# CONFIG_STM32_CLOCK_REF_16M is not set
+# CONFIG_STM32_CLOCK_REF_20M is not set
+# CONFIG_STM32_CLOCK_REF_24M is not set
+# CONFIG_STM32_CLOCK_REF_25M is not set
+# CONFIG_STM32_CLOCK_REF_INTERNAL is not set
+CONFIG_CLOCK_REF_FREQ=8000000
+CONFIG_STM32F0_TRIM=16
+CONFIG_STM32_USB_PA11_PA12=y
+# CONFIG_STM32_USB_PA11_PA12_REMAP is not set
+# CONFIG_STM32_SERIAL_USART1 is not set
+# CONFIG_STM32_SERIAL_USART1_ALT_PB7_PB6 is not set
+# CONFIG_STM32_SERIAL_USART2 is not set
+# CONFIG_STM32_SERIAL_USART2_ALT_PA15_PA14 is not set
+# CONFIG_STM32_CANBUS_PA11_PA12 is not set
+# CONFIG_STM32_CANBUS_PA11_PA12_REMAP is not set
+# CONFIG_STM32_CANBUS_PA11_PB9 is not set
+# CONFIG_STM32_MMENU_CANBUS_PB8_PB9 is not set
+# CONFIG_STM32_MMENU_CANBUS_PD0_PD1 is not set
+# CONFIG_STM32_USBCANBUS_PA11_PA12 is not set
+CONFIG_USB=y
+CONFIG_USB_VENDOR_ID=0x1d50
+CONFIG_USB_DEVICE_ID=0x614e
+# CONFIG_USB_SERIAL_NUMBER_CHIPID is not set
+CONFIG_USB_SERIAL_NUMBER="ay-caramba"
+
+#
+# USB ids
+#
+# end of USB ids
+
+CONFIG_WANT_GPIO_BITBANGING=y
+# CONFIG_WANT_DISPLAYS is not set
+# CONFIG_WANT_SENSORS is not set
+CONFIG_WANT_LIS2DW=y
+# CONFIG_WANT_LDC1612 is not set
+CONFIG_WANT_SOFTWARE_I2C=y
+CONFIG_WANT_SOFTWARE_SPI=y
+CONFIG_NEED_SENSOR_BULK=y
+
+#
+# Optional features (to reduce code size)
+#
+# end of Optional features (to reduce code size)
+
+CONFIG_CANBUS_FREQUENCY=1000000
+CONFIG_INITIAL_PINS=""
+CONFIG_HAVE_GPIO=y
+CONFIG_HAVE_GPIO_ADC=y
+CONFIG_HAVE_GPIO_SPI=y
+CONFIG_HAVE_GPIO_I2C=y
+CONFIG_HAVE_STRICT_TIMING=y
+CONFIG_HAVE_CHIPID=y
+CONFIG_HAVE_STEPPER_BOTH_EDGE=y
+CONFIG_HAVE_BOOTLOADER_REQUEST=y
+CONFIG_HAVE_LIMITED_CODE_SIZE=y
+CONFIG_INLINE_STEPPER_HACK=y
diff --git a/boards/ay-caramba/flash.sh b/boards/ay-caramba/flash.sh
new file mode 100755
index 00000000..1bd294f7
--- /dev/null
+++ b/boards/ay-caramba/flash.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+MCU=/dev/ay-caramba
+if [ "$EUID" -ne 0 ]
+  then echo "ERROR: Please run as root"
+  exit
+fi
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+FLASH_SCRIPT=$(realpath "$SCRIPT_DIR/../../scripts/flash-path.sh")
+$FLASH_SCRIPT $MCU
diff --git a/boards/ay-caramba/make-and-flash-mcu.sh b/boards/ay-caramba/make-and-flash-mcu.sh
new file mode 100755
index 00000000..ce94f472
--- /dev/null
+++ b/boards/ay-caramba/make-and-flash-mcu.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+if [ "$EUID" -ne 0 ]
+  then echo "ERROR: Please run as root"
+  exit
+fi
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+"$SCRIPT_DIR"/compile.sh
+"$SCRIPT_DIR"/flash.sh
diff --git a/boards/ay-caramba/toolboard-config.cfg b/boards/ay-caramba/toolboard-config.cfg
new file mode 100644
index 00000000..adb76d2b
--- /dev/null
+++ b/boards/ay-caramba/toolboard-config.cfg
@@ -0,0 +1,23 @@
+# WARNING. DO NOT EDIT THIS FILE.
+# To override settings from this file, you can copy and paste the relevant
+# sections into your printer.cfg and change it there.
+# WARNING: it is NOT recommended to override board_pins aliases, 
+# use the boards pin names directly in your printer.cfg instead. 
+# Look up the pins you need in the boards pinout diagram.
+
+[board_pins ay_caramba]
+mcu: toolboard
+aliases:
+	x_endstop_pin=PB0,
+	e_step_pin=PB7, e_dir_pin=PB6, e_enable_pin=PB4, e_uart_pin=PB5, e_diag_pin=null, e_heater_pin=PA0, e_sensor_pin=PA2,
+	# leveling
+	bltouch_sensor_pin=null, bltouch_control_pin=null,
+	probe_pin=PA15,
+	# adxl345
+  	adxl345_cs_pin=PA4,
+	# fans
+	fan_part_cooling_pin=PA1,
+	fan_toolhead_cooling_pin=PA9
+	# 4 pin fans
+	4p_fan_part_cooling_pin=PA1,
+	4p_fan_part_cooling_tach_pin=PB1,
\ No newline at end of file
diff --git a/boards/board-definition.schema.json b/boards/board-definition.schema.json
index 101ff144..8b069508 100644
--- a/boards/board-definition.schema.json
+++ b/boards/board-definition.schema.json
@@ -232,6 +232,48 @@
 				}
 			}
 		},
+		"LIS2DW": {
+			"description": "Which settings to use for the ADXL345 accelerometer",
+			"type": "object",
+			"additionalProperties": false,
+			"properties": {
+				"software": {
+					"description": "Whether to use software SPI",
+					"type": "object",
+
+					"additionalProperties": false,
+					"properties": {
+						"sclk": {
+							"description": "The clock pin",
+							"type": "string"
+						},
+						"mosi": {
+							"description": "The mosi pin",
+							"type": "string"
+						},
+						"miso": {
+							"description": "The miso pin",
+							"type": "string"
+						}
+					}
+				},
+				"hardware": {
+					"description": "Which SPI bus to use if using hardware spi",
+					"type": "object",
+					"additionalProperties": false,
+					"properties": {
+						"bus": {
+							"description": "The SPI bus to use",
+							"type": "string"
+						}
+					}
+				},
+				"cs_pin": {
+					"description": "The chip select pin",
+					"type": "string"
+				}
+			}
+		},
 		"integratedDrivers": {
 			"description": "Describes the drivers integrated on this board, if any",
 			"type": "object",