Prusa i3 P802M Zonestar Aliexpress Cooling fan holder with inductive sensor

cults3d

Feb 27th 2017 -------USE AT YOUR OWN RISK------ DO NOT blame me if your board gets shorted or die on you!!!!!---------- After a year from this design, I have walked away from the inductive sensor and upgraded to a photoelectric sensor. it works the same way and no changes in firmware.... just the hardware has changed. With this been said, I found out and now I "understand" a bit more, is.... that I did not need to use a voltage divider, that the signal's pin was looking for the "short"- ground. The key here is to power the sensor directly from the SAME power supply as the controller board is using and the signal from the sensor goes to the controller's S pin. Yes, only ONE cable goes to it. Good luck... Feb 09 2016 Some had issue with the Marlin firmware I am using the Repetier Host and in there the Slic3r has a printer setting it is there that I added the starting code and end code and not in the Marlin Start code G28 ; home all axes G29; G1 Z5 F5000 ; lift nozzle Endcode M104 S0 ; turn off temperature G28 X0 ; home X axis M84 ; disable motors Hope this helps Cheers Jan 29th 2016 For all of us who has this P802M Here below is the link to the REPRAp forum where the unofficial thread was opened and there are a lot of info that you could get as well as helps! http://forums.reprap.org/read.php?406,587131 Jan 21st 2016 by Bobyni I have received a lot of feedbacks mainly for helps on howto.... The 3d printer that I am using is ZONESTAR P802M 220x220x230 Seller Aliexpress 3D star Melzi board by Zonestar V3b Original firmware Repetier V0.91 Current firmware Marlin V1.0 ABL enabled Pc host Repetier host 3D software Blender As DIYer, we try our best to overcome issues and problems with our printer, and that means a lot of reading in the forum and elsewhere!! As my previous note, the sensor that I use, it is the same as Tom Sanladerer's and the voltage divider method is the same as his video. (PLS Google it or search it under youtube) Hope this clarify a bit more! Cheers Dec 21st 2015 Merry Christmas to all of you . or Happy holidays to all of you!! so, finally got it to work and print! after much of frustration. The Melzi would somehow block the signal and it would only be cleared out by having the mechanical endstop triggered. I end up connecting my prove + BR & - BL directly to the power supply and the Signal (Black )to the Melzi board' S. ofcourse using a voltage divider to bring down the 12V to 4.xx V. here are some of my settings, hope it could help you: / Travel limits after homing #define X_MAX_POS 210 //210 #define X_MIN_POS -35 //-20 #define Y_MAX_POS 225 //210 #define Y_MIN_POS -5 #define Z_MAX_POS 235 //210 #define Z_MIN_POS 0 @@@@@@@@@@@@@@@@@@@@@@ #ifdef AUTO_BED_LEVELING_GRID // set the rectangle in which to probe #define LEFT_PROBE_BED_POSITION 40 #define RIGHT_PROBE_BED_POSITION 210 #define BACK_PROBE_BED_POSITION 160 #define FRONT_PROBE_BED_POSITION 40 ^^^^^^^^^^^^^^^^^^&&&&&&&&&&&&&&^^^^^^^^^^^^^^^^^^^^^^^^^^^ This is for those who own a Zonestar P802M Prusa I3 alteration from Aliexpress. who wants to upgrade their printer for Auto bed leveling. The cooling fan holder' STL file was provided by the seller without the sensor's holder. I was then in need to create my holder for the inductive sensor for this particular printer. The added wing has a hole of aprox. 12mm diameter to allow the insertion of the inductive sensor. This is my first post, to re tribute this awesome community!! Hope you find it useful!