Mechanical Endstop Switch (3 Pack)
Mechanical switches are less complicated to implement and cheaper than optical endstops because they do not require a circuit board and only use 2 wires for connecting the switch. Pull up and down resistors can be put close to the main board. You can use contact switches and contact-less (usually magnetically actuated) mechanical switches.
Contact-less magnetic switches are called reed switches. They are proximity switches that close (or switch over) if a magnet comes close enough (usually 1mm or less) and open if the magnet moves away. Reed switches are used as sensors in home alarm systems to detect open windows and doors. - from the RepRap Wiki
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Product comes with 3-pin connection cable
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3-pin cable, mid pin the black pin is ground (“-” on ramps board). Red to VCC (“+” on ramps board). Green to SIGNAL (“s” on ramps board)
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A typical printer system would need at least three endstop switches.
3D Printing Filament MSDS Sheets
Maker Geeks Manufacturing, Inc. is located in beautiful Springfield, MO and is one of the first and only large scale producers of 3D printer filament in the USA ....we want to make sure you have all the data you need to safely use our products. A lot of time and love go into each spool that our tradesmen make here at our plant and we hope you enjoy  and make something really cool with your new Maker Filament!!
ÂÂ ÂMaker Series ABS 3D Printer Filament - MSDS (click here for PDF)
 ÂMaker Series PLA 3D Printer Filament - MSDS (click here for PDF)
 ÂMaker Series PETG 3D Printer Filament - MSDS (click here for PDF)
 ÂCrystal Series PLA 3D Printer Filament - MSDS (click here for PDF)
 ÂCrystal Series PETG 3D Printer Filament - MSDS (click here for PDF)
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Artfully Crafted 3D Printer Filament Made in Beautiful Springfield, MO USA - We Have Made & Sold Over 1 Million Pounds of 3D Printer Filament & Counting! Get your share, support the movement and 3D Print American today! (click the US Flag to learn more!)