https://reprap.org/mediawiki/api.php?action=feedcontributions&user=3DMD&feedformat=atomRepRap - User contributions [en]2024-03-29T04:41:53ZUser contributionsMediaWiki 1.30.0https://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113974User:3DMD2013-12-29T03:55:30Z<p>3DMD: </p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A. This version is easily built on pref-board with just the hall sensor and one resistor. <br />
This is a tested and working on my Mendel Prusa v2. <br />
<br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
7) Cost = US$ 1.92/piece, I got 10 for US$ 11.87 or US$ 1.18/piece. <br />
(DigiKey part number 480-3587-ND)<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
This can be compensated for in the software, Sprinter and Marlin const bool (LINE 233 in Marlin; "const bool Z_ENDSTOPS_INVERTING = true;") <br />
or could add a PNP transistor to invert endstop output if you can't modify software, but it becomes much more complex).<br />
<br />
Here are details on Thingiverse: http://www.thingiverse.com/thing:214825</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113973User:3DMD2013-12-29T02:02:27Z<p>3DMD: </p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A. This version is easily built on pref-board with just the hall sensor and one resistor. <br />
This is a tested and working on my Mendel Prusa v2. <br />
<br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
7) Cost = US$ 1.92/piece, I got 10 for US$ 11.87 or US$ 1.18/piece. <br />
(DigiKey part number 480-3587-ND)<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
This can be compensated for in the software, Sprinter and Marlin const bool (LINE 233 in Marlin; "const bool Z_ENDSTOPS_INVERTING = true;") <br />
or could add a PNP transistor to invert endstop output if you can't modify software, but it becomes much more complex).</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113934User:3DMD2013-12-27T21:54:07Z<p>3DMD: </p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A. <br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
7) Cost = US$ 1.92/piece, I got 10 for US$ 11.87 or US$ 1.18/piece. <br />
(DigiKey part number 480-3587-ND)<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
(This can be compensated for in the software, or could add a PNP transistor to invert this, but it becomes much more complex).</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113933User:3DMD2013-12-27T21:52:54Z<p>3DMD: HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.</p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A. <br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
7) Cost = US$ 1.92/piece, I got 10 for US$ 11.87 or US$ 1.18/piece. <br />
(DigiKey part number 480-3587-ND)<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
(This can be compensated for in the software, or could add a PNP transistor.)</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113927User:3DMD2013-12-27T19:54:49Z<p>3DMD: </p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A . <br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
7) Cost = US$ 1.92/piece, I got 12 for US$ 11.87 or US$ 1.18/piece. <br />
(DigiKey part number 480-3587-ND)<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
(This can be compensated in the software, or could add a PNP transistor.)</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113926User:3DMD2013-12-27T19:51:17Z<p>3DMD: HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS</p>
<hr />
<div>HALL OMNIDIRECTIONAL ENDSTOP - ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A (DigiKey part number 480-3587-ND). <br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can directly source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5) Supply voltage 3 to 24V<br />
6) No external capacitors are specified in the Honeywell installation datasheet.<br />
Disadvantages:<br />
1) No internal pull-up resistor, thus need an external resistor<br />
(You can turn on the pull-up resistor on the input RAMPS pin in Marlin or Sprinter).<br />
2 When turned on (magnet present) output is low. Magnetic field removed, output is high.<br />
(This can be compensated in the software, or could add a PNP transistor.)</div>3DMDhttps://reprap.org/mediawiki/index.php?title=User:3DMD&diff=113924User:3DMD2013-12-27T18:39:26Z<p>3DMD: Created page with "HALL ENDSTOP OMNIDIRECTIONAL ONLY TWO COMPONENTS. After looking at the current hall enstop options, I chose to make my own. I used the Honeywell SS451A (DigiKey part number ..."</p>
<hr />
<div>HALL ENDSTOP OMNIDIRECTIONAL ONLY TWO COMPONENTS.<br />
<br />
After looking at the current hall enstop options, I chose to make my own. <br />
I used the Honeywell SS451A (DigiKey part number 480-3587-ND). <br />
Advantages:<br />
1) Omnidirectional so you don't need to know magnet or sensor orientation.<br />
2) Its a switch; we have no need for ratiometric or linear data, we only need position.<br />
3) It can source 20ma - more than enough for most LED's.<br />
4) Through-hole package easy to work with (instead of SMD version).<br />
5)</div>3DMD