Does the board have a pin/connection to give out a beep (eg when Print is completed)?
Hello,
It is not necessary to wire a pin to get an alarm.
You can use software such as “Octoapp for klipper” on your smartphone, which sends you an alarm when printing is complete.
No, there does not appear to be any beeper/buzzer/speaker stock on the Zero. No UI clicks from either the stock screen or the official SV08/Zero HDMI Capacitive Klipper Screen. I can’t find any evidence of it in printer.cfg either. Perhaps one of the 3rd party screens has a speaker??
I’d also like a simple beeper functionality (aka Marlin M300 type behavior), and there are general Klipper macros and examples out there, but nothing Zero specific. There’s gotta be one unused pin SOVOL-ZERO/Motherboard/Mcu_Pin_definition.pdf at main · Sovol3d/SOVOL-ZERO · GitHub
I asked about this for my ACE when I got it…first Klipper printer.
Now I have 2 Klipper printers & to me anyway, it seems to be a Klipper thing.
Marlin boards had a speaker, but Klipper boards don’t.
Just sharing, short answer, no beeps… 
I noticed a piezoelectric buzzer on the store front Sovol Zero original screen picture.
Ref: Sovol Zero/SV08 3D Printer Original Screen
Question marks abound… I opened my Sovol Zero original screen…
and found this
So taking one for the team and being from a era where sometimes it just needs “a” part I tried this… Amazon.com: SoundOriginal PC Motherboard Internal Speaker BIOS Alarm Buzzer (3pcs/Pack) : Electronics with some breadboard jumper wires.
Sad to report no joy, silent as the night… Tested knob push, turn left/right, push and home the printer. As mentioned, probably need more somewhere…
Good news, in the end my screen still works and my printer still prints :
Attempted HW hack completed… 
I found similar LCD boards around the internet, but if the Zero is going to beep it’s going to take some work at multiple levels by folks with more skill in this area than I have.
Cheers,
-Mike
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I’m interested if someone finds an easy fix. When desiring notification I set a countdown alarm on my phone using the estimated time. Being able to open Mainsail and see estimated time remaining and the camera from my phone’s browser helps too. I have the printer on a smart socket and I can set it to turn off based on the estimated time plus some margin. The printer beeping might sometimes save a bit of effort to set a timer when I remain close enough to hear it but it is low priority on my list of potential refinements.
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I suggest you take my first message into account.
My printer is also plugged into a connected wall outlet, and when I receive the actual message (not approximate) from Octoapp saying “printing complete,” I can turn off the printer.
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Klipper can turn off many wifi smart switches automatically.
If yours is not on the list Klipper can interface with an open source Home Assistant server.
Home Assistant works with nearly every “smart” platform. Another advantage of Home assistant is Klipper can call the shutoff routine that has a delay THEN shutdown the host OS before the power gets cut 20 seconds later. The downside is you need a server to run Home Assistant.
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