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Ender-3 S1 Plus/Pro Filament Change Buzzer Box

Buzzer Box to warm me to do a filament change
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updated June 25, 2025

Description

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I wanted some kind of alarm to let me know when it was time to do a filament change on my Ender-3 S1 Plus because I would not hear it when it was time or wasn't paying attention and it would mess up whatever I was trying to print and would have to start over so I came up with this. It uses a limit switch, a piezo, a rocker switch, 2 AA batteries, some wire a few M3 screws and nuts and the printed parts. You can use the 2 screws that are already holding the OEM X Motor Cover.

I modified the Ender-3 S1 X Motor Cover from https://www.printables.com/model/377901-ender-3-s1-x-motor-cover in and designed the rest in Tinkercad. I did not want to wait a month to get anything from china so I used Amazon.

Link to Tinkercad here....https://www.tinkercad.com/things/im1Vx9AmEGR-buzzer-boxv2

20awg Silicone Electrical Wire 2 Core Wire 20ft [Black 10ft Red 10ft] 20 Gauge Soft and Flexible Hook Up Oxygen Free Strands Tinned Copper Wire 
https://www.amazon.com/dp/B0B9JCXN9M?ref=ppx_yo2ov_dt_b_fed_asin_title
or whatever wire you have.

6 Pcs 12 x 9.5mm 12V DC 11-13V Black Mini Active Piezo Buzzers Electronic Buzzer Alarm Sounder Speaker Beep Tone 12095 (12, Volts) 
https://www.amazon.com/dp/B0DHRVWC6R?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Blackhttps://www.amazon.com/dp/B07X142VGC?ref=ppx_yo2ov_dt_b_fed_asin_title

2Pcs 2 x 1.5V AA Battery Holder Case Box, 2 AA Battery Holder with Wire Leads (Amazon url was way too long)
https://shorturl.at/bSH5H

Unless you come up with a better idea, You will need some way to attached the wires and you can power it anyway you want but I had most of what I used on hand.

mxuteuk 10pcs Snap-in Boat Rocker Switch Toggle Power SPST ON-Off 2 Pin AC 250V/10A 125V/12A, Use for Car Auto Boat Household Appliances 1 Years Warranty KCD1-1-101-ON/OFF
https://www.amazon.com/dp/B0B6TNBZYQ?ref=ppx_yo2ov_dt_b_fed_asin_title

I used 2 spacers between the arm and X cover so the arm could slide back and forth.
When you are ready to set it, turn the switch on then slide the arm all the way to the right. 
 

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