Clip-On RP2040 Zero ADXL 345 Input Shaper Probe

Resonance probe for input shaper calibration for the Klipper firmware based on a RP2040 Zero and a generic ADXL 345 Sensor SPI breakout board..  

Wiring:

Klipper-Configuration:

[mcu pico]
serial: /dev/serial/by-id/usb-Klipper_rp2040_XXXXXXXXXX-if00

[adxl345]
cs_pin: pico:gpio1
spi_bus: spi0a
axes_map: x, y, z

[resonance_tester]
accel_chip: adxl345
probe_points:
    100,100,50

I have attached a klipper build for the RP2040 based on the 2023-03-12 source tree. Please note that the path to the serial port needs to be configured to match your system.