BIG TREE TECH S2DW V1.0 User manual

S2DW V1.0
User Manual

BIGTREETECH S2DW V1.0 User Manual
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Revision Log
Version
Date
Revisions
v1.00
23rd August 2023
Initial Version

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CONTENTS
Revision Log.................................................................2
Product Profile ...............................................................4
Feature Highlights........................................................4
Specifications............................................................4
Firmware Support ........................................................4
Dimensions ..............................................................5
Peripheral Interfaces .........................................................6
Pin Description...........................................................6
Interface Introduction.........................................................6
Connecting to BTT Pi V1.2 (Type-C) ........................................6
Connecting to Manta M8P (Type-C) ........................................7
Connecting to Manta M8P (Soldering Wires) ................................7
Klipper Firmware .............................................................8
Compiling Klipper Firmware...............................................8
Firmware Update via DFU .................................................9
Configuring Klipper.......................................................9
Assembly ...................................................................11

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Product Profile
BIGTREETECH S2DW V1.0 is a module for printer resonance compensation. It
can communicate through USB, greatly simplifying wiring.
Feature Highlights
The board has a reserved BOOT button for easy firmware updates.
Reserved solder points enable users to customize wiring easily.
The USB port has an added ESD protection chip to prevent the MCU from
being damaged by static electricity through the USB.
Specifications
Dimensions
33.25 x 15.5mm
Installation Dimensions
See BIGTREETECH S2DW V1.0-SIZE.pdf for
details.
Microprocessor
RP2040 Dual ARM Cortex-M0+ @ 133MHz
Input Voltage
DC 5V
Logic Voltage
DC 3.3V
Communication with PC
USB2.0
Sensor
LIS2DW
Output Rate
1.6Hz-1600Hz
Sensor Communication
4Line SPI
Low Noise
As low as 1.3mg RMS in low power mode.
Sensor Operating
Temperature Range
-40℃ to +85℃
Firmware Support
This product currently only supports Klipper firmware.

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Dimensions

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Peripheral Interfaces
Pin Description
Interface Introduction
Connecting to BTT Pi V1.2 (Type-C)

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Connecting to Manta M8P (Type-C)
Connecting to Manta M8P (Soldering Wires)

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Klipper Firmware
Compiling Klipper Firmware
1. Connect to CB1/Raspberry Pi via SSH and enter the following
commands:
cd ~/klipper/
make menuconfig
Configure the firmware as shown in the provided image (update Klipper
firmware to the latest version if options are not available).
[*] Enable extra low-level configuration optionsMicro-controller
Micro-controller Architecture (Raspberry Pi RP2040) --->
Bootloader offset (No bootloader) --->
Flash chip (W25Q080 with CLKDIV 2) --->
Communication interface (USB) --->
2. After configuration, press q to exit, and select Yes when prompted to
save.
3. Enter make to compile the firmware. The resulting klipper.bin file will be
in the home/pi/klipper/out folder. This can be directly downloaded to
your computer from the SSH software's left panel.

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Firmware Update via DFU
Raspberry Pi or CB1 update via DFU.
1. Hold the Boot button and connect the board to Raspberry Pi/CB1 via
Type-C cable to enter DFU mode.
2. Enter lsusb in the SSH terminal to query the DFU device ID.
3. Enter
cd klipper
navigate to the Klipper directory, and enter
make flash FLASH_DEVICE=2e8a:0003
start flashing the firmware (Note: Replace 2e8a:0003 with the actual
device ID found in the previous step.)
4. After flashing, enter
ls /dev/serial/by-id/
to query the device's Serial ID (only applicable for USB communication,
not for CANBus).
5. For USB communication, you don't need to press the Boot button for
subsequent updates. Enter the following command to flash the firmware
make flash FLASH_DEVICE=/dev/serial/by-id/usb-Klipper_rp2040_4550357128922FC8-if00
(Note: replacing /dev/serial/by-id/xxx with the actual ID found in the
previous step).
Configuring Klipper
1. Download the sample-bigtreetech-lis2dw-v1.0.cfg config file from:
https://github.com/bigtreetech/LIS2DW
2. Upload to the Configuration Files.

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3. In printer.cfg, add:
[include sample-bigtreetech-lis2dw-v1.0.cfg]
4. Set the correct ID number for your board.(USB serial or canbus)
5. Configure the module's functions according to the instructions in the link
below:
https://www.klipper3d.org/Config_Reference.html#lis2dw
The axes_map parameter needs to be set according to the direction of
the module installation and the movement direction of the printer. The first
parameter represents the direction of the accelerometer module
corresponding to the axis when the printer's X-axis moves in the positive
direction (the silk screen on the module shows the direction of each axis
of the module), and the second parameter represents the direction of the
accelerometer when the Y-axis moves in the positive direction.
6. Lis2dw is a function added to Klipper on August 22, 2023:
https://github.com/Klipper3d/klipper/pull/6312
If you encounter the error "Section 'lis2dw' is not a valid config
section", it means that your Klipper version does not support lis2dw.
Update to the latest version to use it normally.

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Assembly
Note: Avoid overtightening screws during installation to prevent damage.
Example using the Voron StealthBurner:
Method 1:
Install on the side bracket with the dual holes (matches official spacing).
Method 2:
Use screws through the PCB and rubber ring on the heater block as shown.

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If you need further resources for this product, you can find them at
[GitHub](https://github.com/bigtreetech/). If you cannot find what you need, you may
contact our after-sales support([e-mail]).
If you encounter any other problems during use or have suggestions or feedback, please
contact us. Thank you for choosing BIGTREETECH products.