BigTreeTech ADXL345 V2.0 Accelerometer Board
RP2040-based ADXL345 accelerometer board for Klipper input shaping and resonance compensation on 3D printers. Connects via USB Type-C with ESD protection. Board size: 33.25 × 15.5mm.
$9.99
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Specifications
Components
3-axis digital accelerometer with up to ±16g range and 4-wire SPI interface, used for resonance measurement
Bus Interfaces
The BigTreeTech ADXL345 V2.0 is a compact accelerometer module designed specifically for Klipper's input shaping (resonance compensation) feature. Mounting it on a printer's toolhead or bed allows Klipper to measure resonance frequencies and automatically calculate optimal input shaping parameters to reduce ringing artifacts in prints.
At its core is a Raspberry Pi RP2040 dual-core microcontroller running at 133MHz, which handles USB communication and interfaces with the ADXL345 accelerometer over 4-wire SPI. The board connects to the host computer or SBC via USB Type-C, with an ESD protection chip on the USB port to prevent damage from static discharge.
The tiny 33.25 × 15.5mm form factor makes it easy to attach to almost any 3D printer toolhead or bed carriage. The board includes a reserved BOOT button for firmware updates and customizable solder points for flexible wiring. It is compatible with BTT Pi V1.2, Manta M8P, and standard Raspberry Pi boards running Klipper.
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