Bare ADXL345 accelerometer breakout for Klipper resonance testing. This small 3-axis digital accelerometer board is the direct-wired option for measuring printer vibration and tuning input shaper on Klipper machines. Why use this board Uses the ADXL345 3-axis MEMS accelerometer: selectable ±2 g, ±4 g, ±8 g, ±16 g ranges with up to 13-bit full-resolution output. Supports SPI and I2C at the chip level; for Klipper resonance measurement, use SPI per Klipper's measuring-resonances guidance. Low-mass breakout board is easy to temporarily mount to a toolhead, bed, or carriage while tuning resonance. Includes the loose male pin header shown; soldering and wiring are required. Specifications Sensor: ADXL345 3-axis digital accelerometer Measurement range: ±2/±4/±8/±16 g, user-selectable Resolution: fixed 10-bit or full-resolution mode up to 13-bit at ±16 g Digital interfaces: 3-wire SPI, 4-wire SPI, or I2C Breakout pins visible on the board: GND, VCC, CS, INT1, INT2, SDO, SDA, SCL Chip supply range from Analog Devices datasheet: 2.0–3.6 V; use 3.3 V unless your controller and module documentation explicitly confirm otherwise. Printer fitment Use it for Klipper input-shaper calibration on Voron, LH Stinger, and other Klipper-based 3D printers when you are comfortable wiring an accelerometer directly to a Raspberry Pi, Raspberry Pi Pico, or supported controller SPI bus. Which accelerometer should you buy? Choose this ADXL345 breakout if you want the low-cost direct-wire board and do not mind soldering/crimping. Choose the KUSBA USB ADXL345 Accelerometer if you want a USB accelerometer instead of running SPI wires. Choose the LDO Input Shaper Toolkit if you want a more complete cabled input-shaper kit. Gotchas This is not a USB accelerometer and it does not include a cable or printed mount. Klipper's ADXL345 resonance workflow expects SPI; I2C is too slow for that use case. Double-check power, ground, and SPI wiring before powering the printer electronics.
