Inductive Sensor: Difference between revisions
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(Created page with "*NPN vs PNP - [https://sensortech.wordpress.com/2011/01/18/industrial-sensing-fundamentals-%E2%80%93-back-to-the-basics-npn-vs-pnp/] *See D3D BOM for sourcing. *See D3D...") |
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=Introduction= | |||
Inductive sensors are used to sense the Z height on 3D printers. For Marlin with RAMPS - use one that has a 5V output, as opposed to 12V, as RAMPS cannot handle 12V without using additional components. | |||
Part numbers look like LJ18A3-8-Z/BY-5V. | |||
*5V is the critical part - 5V output | |||
*LJ18 - the 18 refers to the diameter of the sensor in mm | |||
*-8- refers to the distance of sensing | |||
*Z/BY refers to normally open vs normally closed | |||
*NPN vs PNP - [https://sensortech.wordpress.com/2011/01/18/industrial-sensing-fundamentals-%E2%80%93-back-to-the-basics-npn-vs-pnp/] | *NPN vs PNP - [https://sensortech.wordpress.com/2011/01/18/industrial-sensing-fundamentals-%E2%80%93-back-to-the-basics-npn-vs-pnp/] | ||
*See [[D3D BOM]] for sourcing. | *See [[D3D BOM]] for sourcing. | ||
*See [[D3D Height Controller]] for design | *See [[D3D Height Controller]] for design | ||
Revision as of 19:57, 6 June 2018
Introduction
Inductive sensors are used to sense the Z height on 3D printers. For Marlin with RAMPS - use one that has a 5V output, as opposed to 12V, as RAMPS cannot handle 12V without using additional components.
Part numbers look like LJ18A3-8-Z/BY-5V.
- 5V is the critical part - 5V output
- LJ18 - the 18 refers to the diameter of the sensor in mm
- -8- refers to the distance of sensing
- Z/BY refers to normally open vs normally closed
- NPN vs PNP - [1]
- See D3D BOM for sourcing.
- See D3D Height Controller for design