Hi! My K40 with all the modification for cooling, interlocks,

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(Dirk Eichel) #1

Hi!
My K40 with all the modification for cooling, interlocks, nozzle fan was a box with lot of different boards and a wiring madness. So idecided to built a combined helper board. This is work in progress. Please let me know what you think and what features are missing.

The features are: 6 interlock inputs. Interlock visualisation by LED, nozzle fan switch, cooling fan switch if e.g. a PC water coller is used to cool down the coolant, 4 relais (115/230V AC). All switching functions are controlled from the M2nano trigger output (see here: https://www.instructables.com/id/China-Laser-Aux-Trigger-Output-K40-M2Nano-Board/).

It is on GitHub (https://github.com/STB3/K40_helper). If you have suggestions for further enhacement, let me know.

(Stephane BUISSON) #2

I really like the Air solenoid feature to not have the compressor on all the time.

a feature to add on the C3D board @raykholo

(Aaron Grogan) #3

I don’t own a K40, but if any aspect of this board is safety-critical, you will need to add monitoring and redundancies to protect against welded relay contacts. I would recommend reading about industrial safety relays and reset procedures. Also make sure that your door switch and e-stop button are suitable for the safety function that they are performing. Don’t count on a no-name machine supplier for anything when it comes to your safety.

(Dirk Eichel) #4

@Aaron_Grogan Thats why it is open on GitHub

(Dirk Eichel) #5

I have it now running on my machine. All features are working properly. I have 4 spare PCBs incl. all required components. If you are interested please send me an e-mail.

(Stephane BUISSON) #6

@Dirk_Eichel please don’t hesitate to make a new post in the community.