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Prusa Core One / One+ Convection Mod — image 1

Prusa Core One / One+ Convection Mod

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for this kit you will need 2 50mm fans + GPIO "Hackerboard"

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Model information

License
Open Community License v1

This is my vesion of convection mod for the Prusa Core One / Core One+

Hardware needs:

  • 2 50mm 24Volts fans

  • 1 GPIO "Hackerboard" set.

  • 8 M3x16 screw

  • 1 MOSFET driver 0-24V 3,3V ( it is use to control 24V via GPIO output)

In my case I have found a Mosfet dual driver module from an old Arduino project.

I have use this extra hardware, but you can use every alternative you like:

Gcode mod

On start G-code inter this  aftet:

{if chamber_minimal_temperature[initial_tool]!=0}
; Min chamber temp section
M104 S{idle_temperature[initial_tool]} ; set idle temp
G1 Z10 F720 ; set bed position
G1 X242 Y-9 F4800 ; set print head position

M262 P7 B0 ; set pin 7 as output
M264 P7 B1 ; set pin 7 to hight/on

on end G-code add

M262 P7 B0 ; set pin 7 as output
M264 P7 B0 ; set pin 7 to low/off

Asap I will update the installation manual.

If you use the fans without a cover under the heatbed you may cool heatbed more than you heat it, here you can find a mold for a silicone cover.

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