Adxl345 help please

General Discussion
1

Basic Information:

Printer Model:ender 3v2
MCU / Printerboard:skr mini e3 v2
Host / SBC
klippy.log

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

…Hi people im really hoping for some help. i have wired my adxl345 to my rpi 3b via spi connection i have enabled spi added the rpi mcu and when i have the adxl345 in my printer.cfg my printer wont connect to rpi but soon as i delete the adxl345 config printer works.

i am using the 32bit mainsail image as on my rpi 3b the 64 bit kept freezing..

this is what i added to config

[mcu rpi]
serial: /tmp/klipper_host_mcu

[adxl345]
spi_bus: spidev0.0

Explicitly define the Chip Select pin as GPIO 8 on the RPi

cs_pin: rpi:gpio8,

and i was told to delete that config and try this:

[mcu rpi]
serial: /tmp/klipper_host_mcu

[adxl345]
spi_bus: spidev0.0, but still no luck. also is a klipper.log attached. Hope some can help.

Thank you

klippy.log (2.4 MB)

2

To my eyes, what yo added and deleted look the same.

I’m curious who that was.

3

it was a some fella i was talking to on face book that said he could help, but obviously he couldn’t.

What am i doing wrong pal ?

As when i put the adxl345 config in my printer.cfg i get error and printer wont connect to pi soon as i delete it my mcu connects

4

okay got past the mcu issue but now when i type ACCELEROMETER_QUERY i get

Invalid adxl345 id (got ff vs e5)

5

This is most likely a cable/connection issue.

What kind of cable are you using for the accelerometer and how long is it?

6

Using Dupont connectors and they only 20cm.

I gave just gone over the soldering just to make sure and will check to see if it works tomorrow.

Thanks for the reply pal

7

Given up on it just going to buy a usb ADXL345 like the fly ADXL345 so don’t have to deal with the headache of getting the connections soldered right

8

Hi again, well I got the usb fly ADXL345 and got it all setup and managed to run a test and all worked.

The next day after I had gone over the Printer making sure all screws bolts and that were secure. So now the ADXL345 wont connect I get the blue box with waiting for connection and then the red box with the no MCU
I’ve noticed that soon as I put # infront of the ADXL345 settings in my Printer. cfg and do firmware restart I t connect.

Please can you help with this

Thsnks

9

Probably a USB address issue. Did you use the same USB port? Even so Linux can be fickle with USB identification.

10

Thanks for the reply. I have tried every usb port and still same. It was working fine and next day I’m having trouble getting a connection.

11

Klipper needs to know where to “find” the ADXL345 MCU.