Basic Information:
Printer Model: Ender 3 pro
MCU / Printerboard: BTT SKR 3 EZ V1.0 / Sonic pad
Host / SBC
klippy.log
Hello my friends, my name is Luis, am a newbie in Klipper, and I hope someone could help me to solve my problem. Recently, someone gave me an Ender 3 pro, with linear rails, microswiss extruder, and a BD sensor. The printer came with a Sonic Pad that have Klipper flash on it. The thing is that when I turn the sonic pad and try to connect to the printer it shows the error: Unknown pin chip name 'probe so by the time am not able to connect to the printer until i solve the issue but I do not know where to start 
klippy.log (95.3 KB)
Hello @Luis86369 and welcome to the forum!
The issu seems to be, that [BDsensor] is not (yet) part of the Klipper environment: Configuration reference - Klipper documentation
There are no additional drivers to Klipper, as the Klipper installations appears to be clean.
You may follow: Installing **BDsensor** | FLY Docs
Be aware, that Klipper is not clean any more then.
Good morning, thank you for your answer, as i told you before i am a newbie on this, so I have a couple of questions:
As I undestood, I have to reinstall BDsensor to Klipper (already installed on the Sonic Pad), right? If this is correct, I have to connect to klipper through the web interface FLuidd with the ip adress tha appear in the sonic pad, right? Then I will have to edit the klipper.log and send it back to the sonic pad to update the fresh parameters of the BD sensor.
As I read on the guide i need to have access to the printer.cfg file (i do not have this file) to edit some parameters to. My question here is how can i have this file if I can not connect to the printer due to this error?
Sorry for all of this question that may sound silly for you, but I am starting on this klipper world and there are a lot of information and knowledge that seems to diffucult to me to understand at this moment.
Thank in advance for you answers 
Klipper is modular. It requires a Linux host (Sonic Pad) and at least 1 MCU (printer motherboard).
The main Klipper processes (klippy, moonraker, crowsnest, etc) run on the host (Sonic Pad) computer. Klipper firmware runs on the printer board or MCU. When you add the BD sensor you are working on the HOST.