Make ready capacitive sensor for Arduino, 3D print

Make ready capacitive sensor for Arduino, 3D printer

Films4You

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Description
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Description

Make ready capacitive sensor for Arduino, 3D printer

Capacitive sensor FAILS for 3D Printer. I Now use a BLTouch sensor which is Great
http://www.dailymotion.com/video/x3r04j0_capacitive-sensor-fails-for-3d-printer_tech

Wiring and basic testing of non-contact capacitive sensor

LJC18A3-B-Z/AY PNP NC 3-Wires 10mm

Capacitive Proximity Sensor Switch DC 6-36V

http://www.dailymotion.com/video/x3h46ml_protomaker-3d-printer-make-ready-capacitive-sensor_tech

Outside diameter: Φ18

Dimensions: 78 x 30mm/3.07 x 1.18"(L x Dia) Total Length:127cm/50"

The detection method: Capacitive

Detection range: ± 10mm (mm)

Operating voltage: DC6-36V

Output Type: PNP NC(normally closed) 3 Wire

Protomaker Black Sp

Details

This uses Tom's Guides
https://www.youtube.com/watch?v=EcGFLwj0pnA

Components

1 × Capacitive Proximity Sensor Switch LJC18A3-B-Z/AY PNP NC 3-Wires 10mm Capacitive Proximity Sensor Switch DC 6-36V
1 × 15K Ohm and 10K Ohm resistors Voltage devider
1 × Solder, heat shrink, wire, etc... Connecting and insulation, Inline conneting

Project Logs

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This capacitive sensor is RUBBISH
Films4You • 11/15/2016 at 19:04 • 0 comments

This capacitive sensor is RUBBISH I now use a BLTouch 10000% better than false zero from #capacitive sensor
NOTE This FAILED!!!!
Films4You • 02/23/2016 at 09:36 • 2 comments

NOTE This FAILED!!!!
LJC18A3-B-Z/AY PNP NC 3-Wires 10mm Capacitive Proximity Sensor Switch DC 6-36V
It
a) Seemed to give different distances depending whether it was on the right hand side of the Print bed of the left hand side of the bed.
b) The LED would flicker some times as it moved from On to Off sensing. On a 3D printer I thing this could cause a problem because when Homing the head touches down the goes back up then back down as a double check. If the On/Off flicker is happening during this time false signals could occur, some video abut this flicker:-