ADXL345-NANO.txt

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  ADXL345 Resonance Testing Setup
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 For Resonance Testing using Arduino UNO to rPi via USB cable.
 
 rPi software setup:
   https://www.klipper3d.org/Measuring_Resonances.html
 Arduino software setup: 
   https://www.klipper3d.org/Installation.html#building-and-flashing-the-micro-controller

 Be sure to change serial address below as per output of 'ls /dev/serial/by-id/*'
 Wire the Arduino / ADXL345 as follows:
 ADXL345      ARDUINO
   CS ------- 10/PB2
   SD0 ------ 12/PB4
   SDA ------ 11/PB3
   SCL ------ 13/PB5

 Shutdown rPi and power off printer. Connect Arduino to rPi via USB cable, attach ADXL345 to toolhead. 
 Power-on printer, uncomment the following lines, restart printer. Open terminal, run CURRENT_HIGH, then G32,
 close doors, use masking tape if needed. Bring bed up to printing temp (110) and nozzle to 150. Once bed has
 reached temp, heat soak for 20 minutes.
 Perform SHAPER_CALIBRATE, and when done, SAVE_CONFIG to save found settings.

 [mcu ardu]
 serial: /dev/serial/by-id/usb-Silicon_Labs_CP2104_USB_to_UART_Bridge_Controller_0199928E-if00-port0
 
 [adxl345]
 cs_pin: ardu:PB2
 
 [resonance_tester]
 accel_chip: adxl345
 probe_points: 175,175,20