Mechanical end stop I have four mechanical end stops with three wires each (red LED on activation) and have no problems with any of them. However, I have a fifth end stop (limit switch with just two wires to pin and GND) and it keeps on playing up. Sometimes I only have to touch the wires and the end stop activates. Should there be a resistor tying the pin out to GND? or should this resistor be part of the RAMPS board? https://reprap.org/forum/read.php?14,748916,748916#msg-748916 Sat, 17 Oct 2026 02:50:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?14,748916,772610#msg-772610 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,772610#msg-772610
Quote
stevenkw1
actually how many end stop do we need on the 3d printer? its 3 is enough? ( x , y ,z axis )

Many printers use the Z probe to home the Z axis, which reduces the number of endstop switches to 2. The Ormerod printer uses just one, because the IR sensor used as the Z probe is also used to do X homing.]]> dc42 Mechanics Fri, 09 Jun 2017 07:25:52 -0400 https://reprap.org/forum/read.php?14,748916,772465#msg-772465 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,772465#msg-772465 WarriorMe Mechanics Thu, 08 Jun 2017 09:16:55 -0400 https://reprap.org/forum/read.php?14,748916,753539#msg-753539 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,753539#msg-753539 Srek Mechanics Mon, 06 Mar 2017 01:53:09 -0500 https://reprap.org/forum/read.php?14,748916,753496#msg-753496 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,753496#msg-753496 stevenkw1 Mechanics Sun, 05 Mar 2017 19:56:13 -0500 https://reprap.org/forum/read.php?14,748916,748939#msg-748939 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,748939#msg-748939 I will scour the firmware later to see the settings for end stops]]> TonyPagett Mechanics Wed, 15 Feb 2017 13:38:30 -0500 https://reprap.org/forum/read.php?14,748916,748935#msg-748935 Re: Mechanical end stop https://reprap.org/forum/read.php?14,748916,748935#msg-748935 Srek Mechanics Wed, 15 Feb 2017 13:20:58 -0500 https://reprap.org/forum/read.php?14,748916,748916#msg-748916 Mechanical end stop https://reprap.org/forum/read.php?14,748916,748916#msg-748916
However, I have a fifth end stop (limit switch with just two wires to pin and GND) and it keeps on playing up.

Sometimes I only have to touch the wires and the end stop activates.

Should there be a resistor tying the pin out to GND? or should this resistor be part of the RAMPS board?]]> TonyPagett Mechanics Wed, 15 Feb 2017 12:03:19 -0500